Eyebrow hairs are always shorter than hairs on your head because of ________.

Eyebrow hairs are always shorter than hairs on your head because of ________.  A) they grow much slower B) eyebrow follicles are only active...

Male pattern baldness has a genetic switch that turns on in response to ________.

Male pattern baldness has a genetic switch that turns on in response to ________. A) age B) size C) weight D) male hormones Answer: D) male...

What is the first threat to life from a massive third-degree burn?

What is the first threat to life from a massive third-degree burn?  A) infection B) catastrophic fluid loss C) unbearable pain D) loss of immune...

Burns are devastating and debilitating because of loss of fluids and electrolytes from the body. How do physicians estimate the extent of burn damage associated with such dangerous fluid loss?

Burns are devastating and debilitating because of loss of fluids and electrolytes from the body. How do physicians estimate the extent of burn damage...

In addition to protection (physical and chemical barrier), the skin serves other functions. Which of the following is another vital function of the skin?

In addition to protection (physical and chemical barrier), the skin serves other functions. Which of the following is another vital function of the...

The sebaceous glands are simple alveolar glands that secrete a substance known as sebum. The secretion of sebum is stimulated ________.

The sebaceous glands are simple alveolar glands that secrete a substance known as sebum. The secretion of sebum is stimulated ________.  A) by...

Apocrine glands, which begin to function at puberty under hormonal influence, seem to play little role in thermoregulation. Where would we find these glands in the human body?

Apocrine glands, which begin to function at puberty under hormonal influence, seem to play little role in thermoregulation. Where would we find these...

The composition of the secretions of the eccrine glands is ________.

The composition of the secretions of the eccrine glands is ________.  A) primarily uric acid B) 99% water, sodium chloride, trace amounts of...

Sudoriferous (sweat) glands are categorized into two distinct types. Which of the following are the two types of sweat glands?

Sudoriferous (sweat) glands are categorized into two distinct types. Which of the following are the two types of sweat glands?  A) sebaceous...

Which of the following statements best describes what fingernails actually are?

Which of the following statements best describes what fingernails actually are?  A) Fingernails are a modification of the epidermis. B) Fingernails...

The most important factors influencing hair growth are ________.

The most important factors influencing hair growth are ________.  A) sex and hormones B) age and glandular products C) the size and number of...

A Langerhans' cell is a ________.

A Langerhans' cell is a ________.  A) specialized squamous epithelial cell B) specialized phagocytic cell C) specialized nerve cell D) specialized...

Changes in the colour of skin are often an indication of a homeostatic imbalance. Which of the following changes would suggest that a patient is suffering from Addison's disease?

Changes in the colour of skin are often an indication of a homeostatic imbalance. Which of the following changes would suggest that a patient is suffering...

Which of the following statements indicates the way in which the body's natural defences protect the skin from the effects of UV damage?

Which of the following statements indicates the way in which the body's natural defences protect the skin from the effects of UV damage?  A)...

The design of a person's epidermal ridges is determined by the manner in which the papillae rest upon the dermal ridges to produce the specific pattern known as handprints, footprints, and fingerprints. Which of the following statements is true regarding these prints or ridges?

The design of a person's epidermal ridges is determined by the manner in which the papillae rest upon the dermal ridges to produce the specific pattern...

The papillary layer of the dermis is connective tissue heavily invested with blood vessels. The superficial surface has structures called:

The papillary layer of the dermis is connective tissue heavily invested with blood vessels. The superficial surface has structures called:  A)...

Despite its apparent durability, the dermis is subject to tearing. How might a person know that the dermis has been stretched and/or torn?

Despite its apparent durability, the dermis is subject to tearing. How might a person know that the dermis has been stretched and/or torn?  A)...

The dermis has two major layers; which of the following constitutes 80% of the dermis and is responsible for the tension lines in the skin?

The dermis has two major layers; which of the following constitutes 80% of the dermis and is responsible for the tension lines in the skin?  A)...

The dermis is a strong, flexible connective tissue layer. Which of the following cell types are likely to be found in the dermis?

The dermis is a strong, flexible connective tissue layer. Which of the following cell types are likely to be found in the dermis?  A) goblet...

Water loss through the epidermis could cause a serious threat to health and well-being. Which of the following protects us against excessive water loss through the skin?

Water loss through the epidermis could cause a serious threat to health and well-being. Which of the following protects us against excessive water loss...

The integumentary system is protected by the action of cells that arise from bone marrow and migrate to the epidermis. Which of the following cells serve this function?

The integumentary system is protected by the action of cells that arise from bone marrow and migrate to the epidermis. Which of the following cells...

The epidermis consists of five layers of cells, each layer with a distinct role to play in the health, well-being, and functioning of the skin. Which of the following layers is responsible for cell division and replacement?

The epidermis consists of five layers of cells, each layer with a distinct role to play in the health, well-being, and functioning of the skin. Which...

Melanocytes and keratinocytes work together in protecting the skin from UV damage when keratinocytes ________.

Melanocytes and keratinocytes work together in protecting the skin from UV damage when keratinocytes ________.  A) provide the melanocyte with...

Keratinocytes are an important epidermal cell because ________.

Keratinocytes are an important epidermal cell because ________.  A) they produce a fibrous protein that gives the skin much of its protective...

The epidermis is responsible for protecting the body against the invasion of bacteria and other foreign agents primarily because it is composed of ________.

The epidermis is responsible for protecting the body against the invasion of bacteria and other foreign agents primarily because it is composed of ________.  A)...

The reason the hypodermis acts as a shock absorber is that ________.

The reason the hypodermis acts as a shock absorber is that ________.  A) it is located just below the epidermis and protects the dermis from...

Nutrients reach the surface of the skin (epidermis) through the process of ________.

Nutrients reach the surface of the skin (epidermis) through the process of ________.  A) absorbing materials applied to the surface layer of...

The ________ gland is a modified sudoriferous gland that secretes wax.

The ________ gland is a modified sudoriferous gland that secretes wax.  A) eccrine B) apocrine C) ceruminous D) mammary Answer: C) ce...

Vernix caseosa is a ________.

Vernix caseosa is a ________.  A) substance contributing to acne during adolescence B) whitish material produced by fetal sebaceous glands C)...

The function of the root hair plexus is to ________.

The function of the root hair plexus is to ________.  A) serve as a source for new epidermal cells for hair growth after the resting stage has...

Although the integument is a covering, it is by no means simple, and some of its functions include ________.

Although the integument is a covering, it is by no means simple, and some of its functions include ________.  A) the dermis providing the major...

Sudoriferous glands vary in distribution over the surface of the body. Which of the following is correct?

Sudoriferous glands vary in distribution over the surface of the body. Which of the following is correct?  A) Eccrine are the most numerous,...

Which statement correctly explains why hair appears the way it does?

Which statement correctly explains why hair appears the way it does?  A) Kinky hair has flat, ribbonlike hair shafts. B) Perfectly round hair...

Melanocytes ________.

Melanocytes ________.  A) are spidery-shaped cells in contact with cells in the stratum basale B) are involved in the immune system C) are involved...

Which of the following cutaneous receptors is specialized for the reception of touch or light pressure?

Which of the following cutaneous receptors is specialized for the reception of touch or light pressure?  A) Meissner's corpuscles B) Pacinian...

If a splinter penetrated the skin into the second epidermal layer of the sole of the foot, which cells would be damaged?

If a splinter penetrated the skin into the second epidermal layer of the sole of the foot, which cells would be damaged?  A) granulosum B) basale C)...

Which muscles attached to the hair follicles cause goosebumps?

Which muscles attached to the hair follicles cause goosebumps?  A) arrector integument B) arrector pili C) levator folliculi D) arrector folliculi Answer: B)...

The dermis ________.

The dermis ________.  A) is an avascular connective tissue layer B) has two layers C) lacks sensory corpuscles and glands D) is where melanocytes...

Acne is a disorder associated with ________.

Acne is a disorder associated with ________.  A) sweat glands B) sebaceous glands C) Meibomian glands D) ceruminous glands Answer: B)...

The major regions of a hair shaft include all of the following except ________.

The major regions of a hair shaft include all of the following except ________.  A) medulla B) cortex C) external root sheath D) cuticle Answer: C)...

A needle would pierce the epidermal layers of the forearm in which order?

A needle would pierce the epidermal layers of the forearm in which order?  A) basale, spinosum, granulosum, corneum B) basale, spinosum, granulosum,...

________ is an inherited condition that affects the heme pathway; it leaves the skin scarred and gums degenerated and may have led to the folklore about vampires.

________ is an inherited condition that affects the heme pathway; it leaves the skin scarred and gums degenerated and may have led to the folklore about...

Select the most correct statement concerning skin cancer.

Select the most correct statement concerning skin cancer.  A) Most tumors that arise on the skin are malignant. B) Squamous cell carcinomas arise...

Mesenchymal cells are most commonly found in ________ connective tissue.

Mesenchymal cells are most commonly found in ________ connective tissue.  A) areolar B) dense regular C) embryonic D) reticular Answer: C)...

What would be a substance you would expect to find expelled from a compound alveolar gland?

What would be a substance you would expect to find expelled from a compound alveolar gland?  A) milk B) acid C) oil D) salivary fluid Answer: A)...

In adults, new surface epithelial cells and the epithelial cells lining the intestine are derived from _________.

In adults, new surface epithelial cells and the epithelial cells lining the intestine are derived from _________.  A) mitotic division of existing...

Select the correct statement regarding factors that affect the tissue repair process.

Select the correct statement regarding factors that affect the tissue repair process.  A) The type of tissue injured is not an important factor. B)...

________ are commonly found wedged between simple columnar epithelial cells.

________ are commonly found wedged between simple columnar epithelial cells.  A) Goblet cells B) Mast cells C) Macrophages D) Cilia Answer: A)...

Select the correct statement regarding adipose tissue.

Select the correct statement regarding adipose tissue.  A) It is composed mostly of extracellular matrix. B) Its primary function is nutrient...

Select the correct statement regarding epithelia.

Select the correct statement regarding epithelia.  A) Simple epithelia form impermeable barriers. B) Stratified epithelia are tall, narrow cells. C)...

Select the correct statement regarding tissue repair.

Select the correct statement regarding tissue repair.  A) Granulation tissue is highly susceptible to infection. B) Inflammation causes capillaries...

Select the correct statement regarding the cells of connective tissue.

Select the correct statement regarding the cells of connective tissue.  A) Connective tissue does not contain cells. B) Connective tissue cells...

Which of the following statements is true of connective tissue?

Which of the following statements is true of connective tissue?  A) Elastin fibers are sometimes called white fibers. B) When connective tissue...

The three main components of connective tissue are ________.

The three main components of connective tissue are ________.  A) ground substance, fibers, and cells B) alveoli, fibrous capsule, and secretory...

Select the correct statement regarding multicellular exocrine glands.

Select the correct statement regarding multicellular exocrine glands.  A) Compound glands are so called because they are constructed from more...

The first step in tissue repair involves ________.

The first step in tissue repair involves ________.  A) replacement of destroyed tissue by the same kind of cells B) proliferation of fibrous...

Which is true concerning muscle tissue?

Which is true concerning muscle tissue?  A) highly cellular and well vascularized B) cuboidal shape enhances function C) contains contractile...

What are glycosaminoglycans?

What are glycosaminoglycans?  A) positively charged proteins B) negatively charged proteins C) positively charged polysaccharides D) negatively...

Which of these is not considered connective tissue?

Which of these is not considered connective tissue?  A) cartilage B) adipose C) muscle D) blood Answer: C) muscl...

Which of the following is true about the mode of secretion of exocrine glands?

Which of the following is true about the mode of secretion of exocrine glands?  A) Merocrine glands are not altered by the secretory process. B)...

Multicellular exocrine glands can be classified ________.

Multicellular exocrine glands can be classified ________.  A) structurally into alveolar and acinar types B) structurally into vascular and avascular...

An epithelial membrane ________.

An epithelial membrane ________.  A) usually involves transitional epithelium B) is formed of epithelium and smooth muscle C) contains simple...

A multilayered epithelium with cuboidal basal cells and flat cells at its surface would be classified as ________.

A multilayered epithelium with cuboidal basal cells and flat cells at its surface would be classified as ________.  A) simple cuboidal B) simple...

________ epithelium appears to have two or three layers of cells, but all the cells are in contact with the basement membrane.

________ epithelium appears to have two or three layers of cells, but all the cells are in contact with the basement membrane.  A) Stratified...

Chondroblasts ________.

Chondroblasts ________.  A) are mature cartilage cells located in spaces called lacunae B) within the cartilage, divide and secrete new matrix C)...

Which of the following is true about epithelia?

Which of the following is true about epithelia?  A) Simple epithelia are commonly found in areas of high abrasion. B) Stratified epithelia are...

Glands, such as the thyroid, that secrete their products directly into the blood rather than through ducts are classified as ________.

Glands, such as the thyroid, that secrete their products directly into the blood rather than through ducts are classified as ________.  A) exocrine B)...

Inability to absorb digested nutrients and secrete mucus might indicate a disorder in which tissue?

Inability to absorb digested nutrients and secrete mucus might indicate a disorder in which tissue?  A) simple squamous B) transitional C) simple...

The shape of the external ear is maintained by ________.

The shape of the external ear is maintained by ________.  A) adipose tissue B) elastic cartilage C) hyaline cartilage D) fibrocartilage Answer: B)...

Organized groups of cells (plus their intercellular substances) that have a common purpose form a(n) ________.

Organized groups of cells (plus their intercellular substances) that have a common purpose form a(n) ________.  A) organ B) tissue C) organism D)...

The fiber type that gives connective tissue great tensile strength is ________.

The fiber type that gives connective tissue great tensile strength is ________.  A) elastic B) collagen C) reticular D) muscle Answer: B)...

The tissue type that arises from all three embryonic germ layers is ________.

The tissue type that arises from all three embryonic germ layers is ________.  A) epithelial tissue B) connective tissue C) nervous tissue D)...

Cell types likely to be seen in areolar connective tissue include all except: ________.

Cell types likely to be seen in areolar connective tissue include all except: ________.  A) chondrocytes B) fibroblasts C) macrophages D) mast...

Matrix is ________.

Matrix is ________.  A) cells and fibers B) fibers and ground substance C) ground substance and cells D) composed of all organic compounds Answer: B)...

Which statement best describes connective tissue?

Which statement best describes connective tissue?  A) usually contains a large amount of matrix B) always arranged in a single layer of cells C)...

A single-celled layer of epithelium that forms the lining of serous membranes is ________.

A single-celled layer of epithelium that forms the lining of serous membranes is ________.  A) simple transitional B) simple columnar C) simple...

Pseudostratified ciliated columnar epithelium ________.

Pseudostratified ciliated columnar epithelium ________.  A) lines the respiratory tract B) aids in digestion C) possesses no goblet cells D)...

Simple columnar epithelium of the digestive tract is characterized by ________.

Simple columnar epithelium of the digestive tract is characterized by ________.  A) dense microvilli B) a rich vascular supply C) fibroblasts D)...

Mammary glands exhibit a glandular type called ________.

Mammary glands exhibit a glandular type called ________.  A) simple tubular B) compound tubular C) simple alveolar D) compound alveolar Answer: D)...

Which of the following would be of most importance to goblet cells and other glandular epithelium?

Which of the following would be of most importance to goblet cells and other glandular epithelium? A) microvilli B) Golgi bodies C) lysosomes D) multiple...

Epithelial tissue ________.

Epithelial tissue ________.  A) is highly vascularized B) has a basement membrane C) is usually acellular D) contains a number of neuron types Answer: B)...

Hyaline cartilage is different from elastic or fibrocartilage because ________.

Hyaline cartilage is different from elastic or fibrocartilage because ________.  A) it is more vascularized B) it contains more nuclei C) fibers...

The presence of lacunae, calcium salts, and blood vessels would indicate ________.

The presence of lacunae, calcium salts, and blood vessels would indicate ________.  A) cartilage tissue B) fibrocartilaginous tissue C) osseous...

The reason that intervertebral discs exhibit a large amount of tensile strength to absorb shock is because they possess ________.

The reason that intervertebral discs exhibit a large amount of tensile strength to absorb shock is because they possess ________.  A) hydroxyapatite...

Which of the following is not found in the matrix of cartilage but is in bone?

Which of the following is not found in the matrix of cartilage but is in bone?  A) live cells B) lacunae C) blood vessels D) organic fibers Answer: C)...

In a multicellular organism, nerve cells are different from muscle cells because

In a multicellular organism, nerve cells are different from muscle cells because  a. each cell type has a unique set of transcription factors...

Hox genes determine an animal's

Hox genes determine an animal's  a. body plan. b. size. c. skin color. d. eye color. Answer: a. body plan...

What regulates the expression of most eukaryotic genes?

What regulates the expression of most eukaryotic genes?  a. mRNA b. transcription factors c. dicer enzymes d. silencing complexes Answer: b....

Specialized cells regulate the expression of genes because they

Specialized cells regulate the expression of genes because they  a. do not want the genes to become worn out. b. cannot control the translation...

Gene regulation in eukaryotes

Gene regulation in eukaryotes  a. usually involves operons. b. is simpler than in prokaryotes. c. allows for cell specialization. d. includes...

Which of the following is involved in regulating gene expression in prokaryotes, but not in eukaryotes?

Which of the following is involved in regulating gene expression in prokaryotes, but not in eukaryotes?  a. operon b. TATA box c. promoter sequences d....

Which is involved with the regulation of eukaryotic genes?

Which is involved with the regulation of eukaryotic genes?  a. operon b. DNA polymerase c. TATA box d. operator Answer: c. TATA bo...

When E. coli is grown on glucose, and there is no lactose available

When E. coli is grown on glucose, and there is no lactose available  a. lactose molecules bind to the lac repressor. b. the lac repressor binds...

A lac repressor turns OFF the expression of the lac genes by

A lac repressor turns OFF the expression of the lac genes by  a. binding to the promoter. b. DNA polymerase. c. binding to the operator. d. binding...

In E, coli, the lac operon controls the

In E, coli, the lac operon controls the  a. breakdown of lactose. b. production of lactose. c. breakdown of glucose. d. production of glucose Answer: a....

Which of the following statements is true about gene regulation in prokaryotes?

Which of the following statements is true about gene regulation in prokaryotes?  a. Promoters determine whether a gene is expressed. b. Expressed...

What are some characteristics of polyploidy plants?

What are some characteristics of polyploidy plants?  a. They tend to be weaker and smaller than diploid plants. b. They tend to be bigger and...

Most mutations

Most mutations  a. have no effect on an organism. b. are fatal to an organism. e. are helpful to an organism. d. are harmful to an organism. Answer: a....

When a chromosome undergoes a deletion mutation, information is

When a chromosome undergoes a deletion mutation, information is  a. repeated. b. lost. c. reversed. d. transferred Answer: b. lost...

One difference between a gene mutation and a chromosomal mutation is that

One difference between a gene mutation and a chromosomal mutation is that  a. A gene mutation affects the DNA of more genes than a chromosomal...

Which of the following is a chromosomal mutation?

Which of the following is a chromosomal mutation? a. inversion b. insertion c. point mutation d. substitution Answer: a. inversio...

A mutation that involves one or a few nucleotides is called

A mutation that involves one or a few nucleotides is called  a. a mutagen. h. an inversion. c. a point mutation. d. a translocation. Answer: c....

In eukaryotes

In eukaryotes  a. Transcription takes place in the cytoplasm, and translation takes place in the nucleus. b. Transcription takes place in the...

Which of the following best describes what happens during gene expression?

Which of the following best describes what happens during gene expression?  a. A cell reads the instructions in DNA and builds a protein based...

What is an exception to the central dogma of molecular biology?

What is an exception to the central dogma of molecular biology?  a. Viruses sometimes transfer information from RNA to DNA. b. Viruses sometimes...

Which is the correct sequence of the transfer of information in most organisms?

Which is the correct sequence of the transfer of information in most organisms?  a. protein to DNA to RNA b. RNA to DNA to protein c. DNA to...

Genes contain instructions for assembling

Genes contain instructions for assembling  a. operons. b. nucleosomes. c. proteins. d. mutagens. Answer: c. proteins...

A protein is being assembled when

A protein is being assembled when  a. DNA is being translated. b. RNA is being transcribed. c. RNA is being translated. d. DNA is being transcribed. Answer: c....

During translation, the type of amino acid that is added to the growing polypeptide depends on the

During translation, the type of amino acid that is added to the growing polypeptide depends on the  a. codon on the mRI'A and the anticodon on...

Which of the following terms is LEAST closely related to the others?

Which of the following terms is LEAST closely related to the others?  a. spindle fiber b. tRNA c. polypeptide d. anticodon Answer: a....

What happens during translation?

What happens during translation?  a. Messenger RNA is made &om a DNA code. b. The cell uses a messenger RNA code to make proteins. c. Transfer...

A promoter is a

A promoter is a  a. binding site for DNA polymerase. b. binding site for RNA polymerase. c. start signal for replication. d. stop signal for...

There are 64 codons and 20 amino acids. Which of the following is true?

There are 64 codons and 20 amino acids. Which of the following is true?  a. Several different codons can specify the same amino acid b. Each...

How many nucleotides are needed to specify three amino acids?

How many nucleotides are needed to specify three amino acids?  a. 3 b. 6 c. 9 d. 12 Answer: c. ...

During eukaryotic transcription, an RNA molecule is formed that is

During eukaryotic transcription, an RNA molecule is formed that is  a. complementary to both strands of DNA. b. identical to an entire single...

What is produced during transcription?

What is produced during transcription?  a. RNA molecules b. DNA molecules c. RNA polymerase d. proteins Answer: a. RNA molecule...

From which molecules are rnRNA molecules transcribed?

From which molecules are rnRNA molecules transcribed?  a. tRNA b. rRNA c. DNA d. proteins Answer: c. DN...

Which molecules are involved in protein synthesis?

Which molecules are involved in protein synthesis? a. transfer RNA, introns, and mutagens b. messenger RNA, introns, and ribosomal RNA c. ribosomal...

Which of the following statements is true of eukaryotic DNA?

Which of the following statements is true of eukaryotic DNA?  a. A promoter is part of an intron. b. An intron is part of a promoter. c. Introns...

Which of the following is true of transcription?

Which of the following is true of transcription?  a. In eukaryotes, transcription takes place in the cytoplasm and requires many enzymes, b....

Which type of RNA brings the information in the genetic code from the nucleus to other parts of the cell?

Which type of RNA brings the information in the genetic code from the nucleus to other parts of the cell?  a. rRNA b. tRNA c. mRNA d. RNA polymerase Answer: c....

Which of the following is true?

Which of the following is true?  a. RNA is usually single-stranded. b. DNA is usually single-stranded. c. DNA contains uracil. d. RNA contains...

Which of the following are found in both DNA and RNA?

Which of the following are found in both DNA and RNA?  a. ribose, phosphate groups, and adenine b. deoxyribose, phosphate groups, and guanine c....

Unlike DNA, RNA contains

Unlike DNA, RNA contains  a. adenine. b. uracil. c. phosphate groups. d. thymine. Answer: b. uracil...

RNA contains the sugar

RNA contains the sugar  a. ribose. b. deoxyribose. c. glucose. d. lactose. Answer: a. ribose...

In both prokaryotes and eukaryotes, DNA replication happens a. before cell division.

In both prokaryotes and eukaryotes, DNA replication happens  a. before cell division.  b. in the nucleus. c. only to telomeres. d. around...

In both prokaryotes and eukaryotes, how many copies of the chromosome are left after replication?

In both prokaryotes and eukaryotes, how many copies of the chromosome are left after replication?  a. I b. 2 c. 3 d. 4 Answer: b. ...

What binds to the prokaryotic chromosome to start DNA replication?

What binds to the prokaryotic chromosome to start DNA replication?  a. replication forks b. regulatory proteins c. chromatids d. telomeres Answer: b....

Which would be greater in a eukaryote than in a prokaryote?

Which would be greater in a eukaryote than in a prokaryote?  a. The percentage of guanine nucleotides, b. The total number of base pairs in a...

In eukaryotes, DNA

In eukaryotes, DNA  a. is located in the nucleus. b. floats freely in the cytoplasm. c. is located in the ribosomes. d. is circular. Answer: a....

Which of the following include all the others?

Which of the following include all the others?  a. DNA molecules b. histones c. chromosomes d. nucleosomes Answer: c. chromosome...

What enzyme works to add DNA to ends of chromosomes in rapidly dividing cells such as those found in an embryo, to prevent genes from being lost during replication?

What enzyme works to add DNA to ends of chromosomes in rapidly dividing cells such as those found in an embryo, to prevent genes from being lost during...

During DNA replication, a DNA strand that has the bases CTAGGT produces a strand with the bases

During DNA replication, a DNA strand that has the bases CTAGGT produces a strand with the bases  a. TCGAAC. b. GATCCA c. AGCTTG. d. GAUCCA Answer: b....

DNA replication results in two DNA molecules?

DNA replication results in two DNA molecules?  a. each with two new strands. b. one with two new strands and the other with two original strands. c....

Watson and Crick discovered the two strands in DNA

Watson and Crick discovered the two strands in DNA  a. run in perpendicular directions. b. run in the same direction. c. run in opposite directions. d....

What did Rosalind Franklin contribute to the effort to identify the structure of DNA?

What did Rosalind Franklin contribute to the effort to identify the structure of DNA?  a. models made of cardboard and wire showing the shape...

Which of the following forms a base pair with thymine?

Which of the following forms a base pair with thymine?  a. deoxyribose b. adenine c.guanine d. cytosine Answer: b. adenin...

What is the chronological order of the important discoveries in the structure of DNA?

What is the chronological order of the important discoveries in the structure of DNA?  a. Franklin makes an X-ray diffraction photo of DNA -*...

Which scientist made x-ray diffraction photos of DNA?

Which scientist made x-ray diffraction photos of DNA?  a. Franklin b. Chargaff c. Watson d. Avery Answer: a. Frankli...

In the Hershey-Chase experiment, what happened to the bacteria that lead been infected by viruses that had radioactive DNA, and to the bacteria that had been infected with viruses that had been marked with radioactive proteins?

In the Hershey-Chase experiment, what happened to the bacteria that lead been infected by viruses that had radioactive DNA, and to the bacteria that...

Which of the following statements correctly describes Chargaff's contribution to the study of DNA?

Which of the following statements correctly describes Chargaff's contribution to the study of DNA? a. Chargaff hypothesized that DNA was a double...

Rosalind Franklin contributed to the understanding of DNA by

Rosalind Franklin contributed to the understanding of DNA by  a. producing images ofDNA molecules using X-rays. b. figuring out that DNA strands...

Which of the following best describes Rosalind Franklin's contribution to our understanding of the structure

Which of the following best describes Rosalind Franklin's contribution to our understanding of the structure  of DNA? a. She created many models...

DNA makes a good molecule for storing information because a. its bases can be joined together in any order, like the letters of the alphabet can be strung to form different words.

DNA makes a good molecule for storing information because a. its bases can be joined together in any order, like the letters of the alphabet can be...

What structural problem prevents adenine from pairing with guanine?

What structural problem prevents adenine from pairing with guanine?  a. The bases are both short b. They lack phosphate groups. c. They lack...

Because of base pairing in DNA, the percentage of

Because of base pairing in DNA, the percentage of  a. adenine molecules in DNA is about equal to the percentage of guanine molecules. b. thymine...

Which of the following is a nucleotide found in DNA?

Which of the following is a nucleotide found in DNA?  a. adenine + phosphate group + thymine b. cytosine + phosphate group + guanine c. deoxyribose...

In which cells is the accurate transmission of information most important?

In which cells is the accurate transmission of information most important?  a. nerve cells b. skin cells c. sex cells d. bone cells Answer: c....

In what way is DNA like a book?

In what way is DNA like a book?  a. DNA has information organized with an kind of index. b. DNA has stored information, that can be copied and...

What happens when a piece of DNA is missing?

What happens when a piece of DNA is missing?  a. Genetic information is stored. b. Genetic information is copied. c. Genetic information is lost d....

What stores information in a cell?

What stores information in a cell?  a, proteins b. carbohydrates c. lipids d. DNA Answer: d. DN...

Why did Hershey and Chase label the viral DNA with radioactive phosphorous and not radioactive sulfur?

Why did Hershey and Chase label the viral DNA with radioactive phosphorous and not radioactive sulfur?  a. DNA contains phosphorus and no sulfur. b....

What do bacteriophages infect?

What do bacteriophages infect?  a. mice. b. humans. c. viruses. d. bacteria. Answer: d. bacteria...

What is inside a bacteriophage?

What is inside a bacteriophage?  a. protein b. nucleic acid c. lipid d. carbohydrate Answer: b. nucleic aci...

Griffith's experiments advanced the study of genetics by proving that

Griffith's experiments advanced the study of genetics by proving that a. there is a chemical that contains genetic information that can be passed...

What property of DNA does bacterial transformation illustrate?

What property of DNA does bacterial transformation illustrate? a. Bacterial DNA cannot move into other bacteria and function. b. Bacterial DNA can...

What would have happened if Avery had added an enzyme that digested all the nucleic acids to the mixture of heat-killed bacteria, added the mixture to harmless bacteria, and injected the mixture into mice?

What would have happened if Avery had added an enzyme that digested all the nucleic acids to the mixture of heat-killed bacteria, added the mixture...

What happened when Griffith injected mice with the harmless, R-strain bacteria alone?

What happened when Griffith injected mice with the harmless, R-strain bacteria alone? a. The bacteria transformed. b. The mouse lived. c. The mouse...

What did Avery conclude caused transformation?

What did Avery conclude caused transformation? b. A protein was the transforming factor. c. Carbohydrate was the transforming factor. d. A lipid was...

Griffith called the process he observed transformation because

Griffith called the process he observed transformation because a. the mouse had been transformed. b. the harmful bacteria had been transformed. c....

Which bacteria killed the mice in Griffith's transformation experiment?

Which bacteria killed the mice in Griffith's transformation experiment? a. live, harmless bacteria and heat-killed, harmful bacteria b. live, harmless...