What role does a transcription factor play in a signal transduction pathway?

What role does a transcription factor play in a signal transduction pathway? A. By binding a plasma membrane receptor it initiates a cascade B. It...

A toxin that inhibits the production of GTP would interfere with the function of a signal transduction pathway that is initiated by the binding of a signal molecule to _____ receptors.

A toxin that inhibits the production of GTP would interfere with the function of a signal transduction pathway that is initiated by the binding of a...

Lipid-soluble signal molecules, such as testosterone, cross the membranes of all cells but affect only target cells because

Lipid-soluble signal molecules, such as testosterone, cross the membranes of all cells but affect only target cells because  A)only target cells...

Protein phosphorylation is commonly involved with all of the following except

Protein phosphorylation is commonly involved with all of the following except A) regulation of transcription by extracellular signal molecules. B)...

Which observation suggested to Sutherland the involvement of a second messenger in epinephrine's effect on liver cells?

Which observation suggested to Sutherland the involvement of a second messenger in epinephrine's effect on liver cells?  A) Enzymatic activity...

The activation of receptor tyrosine kinases is characterized by

The activation of receptor tyrosine kinases is characterized by  A) dimerization and phosphorylation. B) IP3 binding. C) a phosphorylation cascade. D)...

Binding of a signaling molecule to which type of receptor leads directly to a change in distribution of ions on opposite sides of the membrane?

Binding of a signaling molecule to which type of receptor leads directly to a change in distribution of ions on opposite sides of the membrane?  A)...

Phosphorylation cascades involving a series of protein kinases are useful for cellular signal transduction because

Phosphorylation cascades involving a series of protein kinases are useful for cellular signal transduction because  A) they are species specific. B)...

If an adult person has a faulty version of the human-analog to ced-4 ofthe nematode, which of the following might more likely result?

If an adult person has a faulty version of the human-analog to ced-4 ofthe nematode, which of the following might more likely result?  A) neurodegeneration B)...

Human caspases can be activated by

Human caspases can be activated by  A) irreparable DNA damage or protein misfolding. B) infrequency of cell division. C) high concentrations...

The main proteases involved in apoptosis are

The main proteases involved in apoptosis are  A) ced-3 and ced-4. B) inactive. C) cytochromes. D) caspases. E) G proteins. Answer:...

Why has C. elegans proven to be a useful model for understanding apoptosis?

Why has C. elegans proven to be a useful model for understanding apoptosis?  A) The animal has very few genes, so that finding those responsible...

The termination phase of cell signaling requires which of the following?

The termination phase of cell signaling requires which of the following?  A) removal of the receptor B) activation of a different set of relay...

What are scaffolding proteins?

What are scaffolding proteins?  A) ladder-like proteins that allow receptor-ligand complexes to climb through cells from one position to another B)...

The use of beta 2 antagonist drugs may be useful in asthma because

The use of beta 2 antagonist drugs may be useful in asthma because  A) they may increase constriction of the skeletal muscle of the chest wall. B)...

As humans, we have receptors for two kinds of beta adrenergic compounds such as catecholamines. Cardiac muscle cells have beta 1 receptors that promote increased heart rate. Some drugs that slow heart rate are called beta blockers. Smooth muscle cells, however, have beta 2 receptors which mediate muscle relaxation. Blockers of these effects are sometimes used to treat asthma. The description above illustrates which of the following?

As humans, we have receptors for two kinds of beta adrenergic compounds such as catecholamines. Cardiac muscle cells have beta 1 receptors that promote...

Which of the substances below is a protein that can hold several other relay proteins as it binds to an activated membrane receptor?

Which of the substances below is a protein that can hold several other relay proteins as it binds to an activated membrane receptor?  A) active...

A drug designed to inhibit the response of cells to testosterone would almost certainly result in which of the following?

A drug designed to inhibit the response of cells to testosterone would almost certainly result in which of the following?  A) lower cytoplasmic...

One inhibitor of cGMP is Viagra. It provides a signal that leads to dilation of blood vessels and increase of blood in the penis, facilitating erection. cGMP is inhibited, therefore the signal is prolonged. The original signal that is now inhibited would have

One inhibitor of cGMP is Viagra. It provides a signal that leads to dilation of blood vessels and increase of blood in the penis, facilitating erection....

Which of the following is a correct association?

Which of the following is a correct association?  A) kinase activity and the addition of a tyrosine B) phosphodiesterase activity and the removal...

Which of the following statements is true?

Which of the following statements is true? A) When signal molecules first bind to receptor tyrosine kinases, the receptors phosphorylate a number...

An inhibitor of which of the following could be used to block the release of calcium from the endoplasmic reticulum?

An inhibitor of which of the following could be used to block the release of calcium from the endoplasmic reticulum?  A) tyrosine kinases B)...

If a pharmaceutical company wished to design a drug to maintain low blood sugar levels, one approach might be to

If a pharmaceutical company wished to design a drug to maintain low blood sugar levels, one approach might be to  A) design a compound that blocks...

Caffeine is an inhibitor of phosphodiesterase. Therefore, the cells of a person who has recently consumed coffee would have increased levels of

Caffeine is an inhibitor of phosphodiesterase. Therefore, the cells of a person who has recently consumed coffee would have increased levels of A)...

Adenylyl cyclase has the opposite effect of which of the following?

Adenylyl cyclase has the opposite effect of which of the following?  A) protein kinase B) protein phosphatase C) phosphodiesterase D) phosphorylase E)...

An inhibitor of phosphodiesterase activity would have which of the following effects?

An inhibitor of phosphodiesterase activity would have which of the following effects?  A) block the response of epinephrine B) decrease the amount...

Which of the following most likely would be an immediate result of growth factor binding to its receptor?

Which of the following most likely would be an immediate result of growth factor binding to its receptor? A) protein kinase activity B) adenylyl cyclase...

Which of the following would be inhibited by a drug that specifically blocks the addition of phosphate groups to proteins?

Which of the following would be inhibited by a drug that specifically blocks the addition of phosphate groups to proteins?  A) G-protein-linked...

The toxin of Vibrio cholerae causes profuse diarrhea because it

The toxin of Vibrio cholerae causes profuse diarrhea because it  A) modifies a G protein involved in regulating salt and water secretion. B)...

Which of the following describes cell communication systems?

Which of the following describes cell communication systems?  A) Cell signaling evolved more recently than systems such as the immune system...

The general name for an enzyme that transfers phosphate groups from ATP to a protein is

The general name for an enzyme that transfers phosphate groups from ATP to a protein is  A) phosphorylase. B) phosphatase. C) protein kinase. D)...

Which of the following is the best explanation for the inability of an animal cell to reduce the Ca2+ concentration in its cytosol compared with the extracellular fluid?

Which of the following is the best explanation for the inability of an animal cell to reduce the Ca2+ concentration in its cytosol compared with the...

Sutherland discovered that epinephrine

Sutherland discovered that epinephrine  A) signals bypass the plasma membrane of cells. B) lowers blood glucose by binding to liver cells. C)...

In general, a signal transmitted via phosphorylation of a series of proteins

In general, a signal transmitted via phosphorylation of a series of proteins A) brings a conformational change to each protein. B) requires binding...

The receptors for a group of signaling molecules known as growth factors are often

The receptors for a group of signaling molecules known as growth factors are often  A) ligand-gated ion channels. B) G-protein-linked receptors. C)...

Chemical signal pathways

Chemical signal pathways  A) operate in animals, but not in plants. B) are absent in bacteria, but are plentiful in yeast. C) involve the release...

One of the major categories of receptors in the plasma membrane reacts by forming dimmers, adding phosphate groups, then activating relay proteins. Which type does this?

One of the major categories of receptors in the plasma membrane reacts by forming dimmers, adding phosphate groups, then activating relay proteins....

Which is true of transcription factors?

Which is true of transcription factors?  A) They regulate the synthesis of DNA in response to a signal. B) Some transcribe ATP into cAMP. C)...

Testosterone functions inside a cell by

Testosterone functions inside a cell by  A) acting as a signal receptor that activates ion-channel proteins. B) binding with a receptor protein...

Which of the following are chemical messengers that pass through the plasma membrane of cells & have receptor molecules in the cytoplasm?

Which of the following are chemical messengers that pass through the plasma membrane of cells & have receptor molecules in the cytoplasm? A....

Up to 60% of all medicines used today exert their effects by influencing what structures in the cell membrane?

Up to 60% of all medicines used today exert their effects by influencing what structures in the cell membrane?  A) tyrosine-kinases receptors B)...

Membrane receptors that attach phosphates to specific amino acids in proteins are

Membrane receptors that attach phosphates to specific amino acids in proteins are  A) not found in humans. B) called receptor tyrosine-kinases. C)...

G proteins and G-protein-linked receptors

G proteins and G-protein-linked receptors  A) are found only in animal cells, and only embedded in or located just beneath the cell's membrane. B)...

Thyroid hormones bind to _____ receptors.

Thyroid hormones bind to _____ receptors. A. G-protein-linked B. tyrosine-kinase C. plasma membrane ion-channel D. intracellular E. steroid Answer:...

What would be true for the signaling system in an animal cell that lacks the ability to produce GTP?

What would be true for the signaling system in an animal cell that lacks the ability to produce GTP?  A) It would not be able to activate and...

Of the following, a receptor protein in a membrane that recognizes a chemical signal is most similar to

Of the following, a receptor protein in a membrane that recognizes a chemical signal is most similar to A) the active site of an allosteric enzyme...

Which of the following is (are) true of ligand-gated ion channels?

Which of the following is (are) true of ligand-gated ion channels?  A) They are important in the nervous system. B) They lead to changes in sodium...

A small molecule that specifically binds to another molecule, usually a larger one

A small molecule that specifically binds to another molecule, usually a larger one  A) is called a signal transducer. B) is called a ligand. C)...

Synaptic signaling between adjacent neurons is like hormone signaling in which of the following ways?

Synaptic signaling between adjacent neurons is like hormone signaling in which of the following ways?  A) It sends its signal molecules through...

When a cell releases a signal molecule into the environment and a number of cells in the immediate vicinity respond, this type of signaling is

When a cell releases a signal molecule into the environment and a number of cells in the immediate vicinity respond, this type of signaling is  A)...

The process of transduction usually begins

The process of transduction usually begins  A) when the chemical signal is released from the alpha cell. B) when the signal molecule changes...

From the perspective of the cell receiving the message, the three stages of cell signaling are

From the perspective of the cell receiving the message, the three stages of cell signaling are A) the paracrine, local, and synaptic stages. B) signal...

Paracrine signaling

Paracrine signaling  A) involves secreting cells acting on nearby target cells by discharging a local regulator into the extracellular fluid. B)...

What could happen to the target cells in an animal that lack receptors for local regulators?

What could happen to the target cells in an animal that lack receptors for local regulators? A- They could develop normally in response to neurotransmitters...

In the yeast signal transduction pathway, after both types of mating cells have released the mating factors and the factors have bound to specific receptors on the correct cells,

In the yeast signal transduction pathway, after both types of mating cells have released the mating factors and the factors have bound to specific receptors...

Which of the following does not occur during the Calvin Cycle?

Which of the following does not occur during the Calvin Cycle? A. carbon fixation B. oxidation of NADPH C. release of oxygen D. regeneration of the...

Which of the following statements is a correct distinction between autotrophs and heterotrophs?

Which of the following statements is a correct distinction between autotrophs and heterotrophs? A. Only heterotrophs require chemical compounds from...

Which process is most directly driven by light energy?

Which process is most directly driven by light energy? A. creation of a pH gradient by pumping protons across the thylakoid membrane B. carbon fixation...

How is photosynthesis similar in C4 and CAM plants?

How is photosynthesis similar in C4 and CAM plants? A. In both cases, only photosystem I is used B. Both types of plants make sugar without the Calvin...

In mechanism, photophosphorylation is most similar to

In mechanism, photophosphorylation is most similar to  A. substrate-level phosphorylation in glycolysis B. oxidative phosphorylation in cellular...

Which of the following sequences correctly represents the flow of electrons during photosynthesis?

Which of the following sequences correctly represents the flow of electrons during photosynthesis? A. NADPH-> O2-> CO2 B. H2O-> NADPH->...

The light reactions of photosynthesis supply the Calvin cycle with

The light reactions of photosynthesis supply the Calvin cycle with  A. Light energy B. CO2 and ATP C. H2O and NADPH D. ATP and NADPH E. Sugar...

If plant gene alterations cause the plants to be deficient in photo respiration, what would most probably occur?

If plant gene alterations cause the plants to be deficient in photo respiration, what would most probably occur? A. Cells would carry on more photosynthesis B....

The alternative pathways of photosynthesis using the C4 or CAM systems are said to be compromised. Why?

The alternative pathways of photosynthesis using the C4 or CAM systems are said to be compromised. Why?  A. Each one minimizes both water lose...

Photo respiration lowers the efficiency of photosynthesis by preventing the formation of

Photo respiration lowers the efficiency of photosynthesis by preventing the formation of A. Carbon dioxide molecule B. 3-phosphoglycerate molecules C....

CAM plants keep stomata closed in daytime, thus reducing loss of water. They can do this because they

CAM plants keep stomata closed in daytime, thus reducing loss of water. They can do this because they  A. Fix CO2 into organic acids during...

Why are C4 plants able to photosynthesize with no apparent photo respiration?

Why are C4 plants able to photosynthesize with no apparent photo respiration? A. They do not participate in the Calvin cycle B. They use PEP carboxylasr...

In an experiment studying photosynthesis performed during the day, you provide a plant with radioactive carbon(14C) dioxide as a metabolic tracer. The 14C is incorporated florist into oxaloacetate. The plant is best characterized as a

In an experiment studying photosynthesis performed during the day, you provide a plant with radioactive carbon(14C) dioxide as a metabolic tracer. The...

In which cell would you expect photo respiration?

In which cell would you expect photo respiration? A. Cell I B. Cell II C. cell I at night D. Cell II at night E. Neither cell I not cell II Answer:...

Referring to figure 10.3 oxygen would inhibit the CO2 fixation reactions in

Referring to figure 10.3 oxygen would inhibit the CO2 fixation reactions in A. Cell I only B. Cell II only C. Neither cell I or cell II D. both cell...

Which of the following statements is true concerning Figure 10.3?

Which of the following statements is true concerning Figure 10.3? A it represents cell processes involved in C4 photosynthesis B. It represents the...

The pH of the inner thylakoid space has been measured, as have the pH of the stroma and of the cytosol of a particular plant cell. Which, if any, relationship would you expect to find?

The pH of the inner thylakoid space has been measured, as have the pH of the stroma and of the cytosol of a particular plant cell. Which, if any, relationship...

In metabolic processes of cell repairs room and photosynthesis, prosthetic groups such as heme and iron-sulfur complexes are encountered. What do they do?

In metabolic processes of cell repairs room and photosynthesis, prosthetic groups such as heme and iron-sulfur complexes are encountered. What do they...

Which molecule(s) of the Calvin cycle is/are most like molecules found in glycolysis?

Which molecule(s) of the Calvin cycle is/are most like molecules found in glycolysis? A. A,B,C, and E B. B,C, and E C. A only D. C and D only Answer:...

If the carbon atom of the incoming CO2 molecule is labeled with a radioactive isotope of carbon, where will the radioactivity be measurable after one cycle?

If the carbon atom of the incoming CO2 molecule is labeled with a radioactive isotope of carbon, where will the radioactivity be measurable after one...

If ATP used by this plant labeled with radioactive phosphorus, in which molecules will the radioactivity be measurable after one "turn" of the cycle?

If ATP used by this plant labeled with radioactive phosphorus, in which molecules will the radioactivity be measurable after one "turn" of the cycle? A....

In the process of carbon fixation, RuBP attached a CO2 to produce a 6 carbon molecule, which is split in two. After phosphorylation and reduction, what more needs to happen in the Calvin cycle?

In the process of carbon fixation, RuBP attached a CO2 to produce a 6 carbon molecule, which is split in two. After phosphorylation and reduction, what...

The sugar that results from three "turns" of the Calvin cycle is glyceraldehyde-3-phosphate (G3P). Which of the following is a consequence of this

The sugar that results from three "turns" of the Calvin cycle is glyceraldehyde-3-phosphate (G3P). Which of the following is a consequence of this A....

For the following questions, compare the light reactions with the Calvin cycle of photosynthesis in plants. Requires glucose

For the following questions, compare the light reactions with the Calvin cycle of photosynthesis in plants.Requires glucose A. Light reactions alone B....

For the following questions, compare the light reactions with the Calvin cycle of photosynthesis in plants. Requires CO2

For the following questions, compare the light reactions with the Calvin cycle of photosynthesis in plants.Requires CO2 A. light reactions alone B....

For the following questions, compare the light reactions with the Calvin cycle of photosynthesis in plants. Produced three-carbon sugars

For the following questions, compare the light reactions with the Calvin cycle of photosynthesis in plants.Produced three-carbon sugars A. Light reactions...

For the following questions, compare the light reactions with the Calvin cycle of photosynthesis in plants. Produced NADPH

For the following questions, compare the light reactions with the Calvin cycle of photosynthesis in plants.Produced NADPH  A. light reactions...

For the following questions, compare the light reactions with the Calvin cycle of photosynthesis in plants. Produced NADH

For the following questions, compare the light reactions with the Calvin cycle of photosynthesis in plants.Produced NADH A. light reactions only B....

For the following questions, compare the light reactions with the Calvin cycle of photosynthesis in plants. Requires ATP

For the following questions, compare the light reactions with the Calvin cycle of photosynthesis in plants.Requires ATP  A. Light reactions...

For the following questions, compare the light reactions with the Calvin cycle of photosynthesis in plants. Produced molecular oxygen(O2)

For the following questions, compare the light reactions with the Calvin cycle of photosynthesis in plants.Produced molecular oxygen(O2) A. Light...

What is the primary function of the Calvin cycle?

What is the primary function of the Calvin cycle? A. Use ATP to release carbon dioxide B. Use NADPH to release carbon dioxide C. Split water and release...

Where do the enzymatic reactions of the Calvin cycle take place?

Where do the enzymatic reactions of the Calvin cycle take place? A. Stroma of the chloroplast B. Thylakoid membranes C. Outer membrane of the chloroplast D....

Which of the following statements best represents the relationships between the light reactions and the Calvin cycle?

Which of the following statements best represents the relationships between the light reactions and the Calvin cycle? A. The light reactions provide...

In thylakoids, protons travel through ATP synthase from the stroma to the thylakoid space. Therefore the catalytic "knobs" of the ATP synthase would be located

In thylakoids, protons travel through ATP synthase from the stroma to the thylakoid space. Therefore the catalytic "knobs" of the ATP synthase would...

Carotenoids are often found in foods that are considered to have antioxidant properties in human nutrition. What related function do they have in plants?

Carotenoids are often found in foods that are considered to have antioxidant properties in human nutrition. What related function do they have in plants? A....

Cyclic electron flow may be photoprotective (protective to light-induced damage). Which of the following experiments could provide information on this phenomenon

Cyclic electron flow may be photoprotective (protective to light-induced damage). Which of the following experiments could provide information on this...

Some photosynthetic bacteria have photosystem I but not II, while others have both PSI and PSII. Which of the following might this observation imply?

Some photosynthetic bacteria have photosystem I but not II, while others have both PSI and PSII. Which of the following might this observation imply? A....

P680+ is said to be the strongest biological oxidizing agent. Why?

P680+ is said to be the strongest biological oxidizing agent. Why? A. it is the receptor for the most excited electron in either photosystem B....

In a protein complex for the light reaction ( a reaction center), energy is transferred from pigment molecule to pigment molecule, to a special chlorophyll a molecule, and eventually to the primary electron acceptor. why does this occur?

In a protein complex for the light reaction ( a reaction center), energy is transferred from pigment molecule to pigment molecule, to a special chlorophyll...

What is the relationship between wavelength of light and the quantity of energy per photon?

What is the relationship between wavelength of light and the quantity of energy per photon? A. they have a direct, linear relationship B. the are...

Generation of photon gradients across membranes occurs during

Generation of photon gradients across membranes occurs during  A. photosynthesis B. respiration C. both photosynthesis and respiration D. neither...

The splitting of carbon dioxide to form oxygen gas and carbon compounds occurs during

The splitting of carbon dioxide to form oxygen gas and carbon compounds occurs during A. photosynthesis B. respiration C. both photosynthesis and...

Reduction of NADP+ occurs during

Reduction of NADP+ occurs during A. photosynthesis B. respiration C. both photosynthesis and respiration D. neither photosynthesis nor respiration E....

Reduction of oxygen which forms water occurs during

Reduction of oxygen which forms water occurs during A. photosynthesis B. respiration C. both photosynthesis and respiration D. neither photosynthesis...

Synthesis of ATP by the chemiosmotic mechanism occurs during

Synthesis of ATP by the chemiosmotic mechanism occurs during A. photosynthesis B. respiration C. both photosynthesis and respiration D neither photosynthesis...

Where are the molecules of the ETC found in plant cells?

Where are the molecules of the ETC found in plant cells? A. thylakoid membranes of chloroplasts B. stroma of chloroplasts c. inner membrane of mitochondria D....

Which of the following statements best describes the relationship between photosynthesis and respiration?

Which of the following statements best describes the relationship between photosynthesis and respiration? A. Respiration is the reversal of the...

In mitochondria, chemiosmosis translocates protons from the matrix into the intermembrane space, whereas in chloroplasts, chemiosmosis translocates protons from

In mitochondria, chemiosmosis translocates protons from the matrix into the intermembrane space, whereas in chloroplasts, chemiosmosis translocates...

In a plant cell, where are the ATP synthase complexes located?

In a plant cell, where are the ATP synthase complexes located? A. thylakoid membrane B. plasma membrane C. inner mitochondrial membrane D. A and...

Suppose the interior of the thylakoids of isolated chloroplasts were made acidic and then transferred in the dark to a pH-8 solution. What would be likely to happen?

Suppose the interior of the thylakoids of isolated chloroplasts were made acidic and then transferred in the dark to a pH-8 solution. What would be...

What does the chemiosmotic process in chloroplasts involve?

What does the chemiosmotic process in chloroplasts involve? A. establishment of a proton gradient B. diffusion of electrons through the thylakoid...

Assume a thylakoid is somehow punctured so that the interior of the thylakoid is no longer separated form the stroma. This damage will have the most direct effect on which of the following processes?

Assume a thylakoid is somehow punctured so that the interior of the thylakoid is no longer separated form the stroma. This damage will have the most...

As a research scientist, you measure the amount of ATP and NADPH consumed by the Calvin cycle in 1 hour. You find 30,000 molecules of ATP consumed, but only 20,000 molecules of NADP. Where did the extra ATP molecules come from?

As a research scientist, you measure the amount of ATP and NADPH consumed by the Calvin cycle in 1 hour. You find 30,000 molecules of ATP consumed,...

What are the products of linear photophosphorylation?

What are the products of linear photophosphorylation? A. heat and fluorescence B. ATP and P700 C. ATP and NADPH D. ADP and NADP E. P700 and P680 Answer:...

Some photosynthetic organisms contain chloroplasts that lack photosystem II, yet they are able to survive. The best way to detect the lack of photosystem II in these organisms would be

Some photosynthetic organisms contain chloroplasts that lack photosystem II, yet they are able to survive. The best way to detect the lack of photosystem...

Which of the following are directly associated with photosystem I?

Which of the following are directly associated with photosystem I? A. harvesting of light energy by ATP B. receiving electrons from plastocyanin C....

Which statement describes the functioning of photosystem II?

Which statement describes the functioning of photosystem II? A. light energy excites electrons in the electron transport chain in a photosynthetic...

Which of the events listen below occur in the light reactions of photosynthesis?

Which of the events listen below occur in the light reactions of photosynthesis? A. NADP is produced B. NADPH is reduced to NADP+ C. carbon dioxide...

The reaction-center chlorophyll of photosystem I is known as P700 because

The reaction-center chlorophyll of photosystem I is known as P700 because A. there are 700 chlorophyll molecules in the center B. this pigment is...

In the thylakoid membranes, what is the main role of the antenna pigment molecules?

In the thylakoid membranes, what is the main role of the antenna pigment molecules? A. split water and release oxygen to the reaction-center chlorophyll B....

Compared with the lines for chlorophyll a in the figure, where would you expect to find the lines to differ for chlorophyll b?

Compared with the lines for chlorophyll a in the figure, where would you expect to find the lines to differ for chlorophyll b? A. the absorption spectrum...

What wavelength of light in the figure is most effective in driving photosynthesis?

What wavelength of light in the figure is most effective in driving photosynthesis? A. 420 mm B. 475 mm C. 575 mm D. 625 mm E. 730 mm Answer:...

What wavelength of light in the figure is most effective in driving photosynthesis?

What wavelength of light in the figure is most effective in driving photosynthesis? A. 420 mm B. 475 mm C. 575 mm D. 625 mm E. 730 mm Answer:...

Figure 10.1 shows the absorption spectrum for chlorophyll a and the action spectrum for photosynthesis. Why are they different?

Figure 10.1 shows the absorption spectrum for chlorophyll a and the action spectrum for photosynthesis. Why are they different? a. green and yellow...

Theodor W. Engelmann illuminated a filament of algae with light that passed through a prism, thus exposing different segments of algae to different wavelengths of light. He added aerobic bacteria and then noted that the largest groups were found in the areas illuminated by the red and blue light. If you ran the same experiment without passing light through a prism, what would you predict?

Theodor W. Engelmann illuminated a filament of algae with light that passed through a prism, thus exposing different segments of algae to different...

Theodor W. Engelmann illuminated a filament of algae with light that passed through a prism, thus exposing different segments of algae to different wavelengths of light. He added aerobic bacteria and then noted that the largest groups were found in the areas illuminated by the red and blue light. An outcome of this experiment was to help determine

Theodor W. Engelmann illuminated a filament of algae with light that passed through a prism, thus exposing different segments of algae to different...

Theodor W. Engelmann illuminated a filament of algae with light that passed through a prism, thus exposing different segments of algae to different wavelengths of light. He added aerobic bacteria and then noted in which areas the bacteria congregated. He noted that the largest groups were found in the areas illuminated by the red and blue light. What did Engelmann conclude about the congregation of bacteria in the red and blue areas?

Theodor W. Engelmann illuminated a filament of algae with light that passed through a prism, thus exposing different segments of algae to different...

A plant has a unique photosynthetic pigment. The leaves of this plant appear to be reddish yellow. What wavelengths of visible light are being absorbed by this pigment?

A plant has a unique photosynthetic pigment. The leaves of this plant appear to be reddish yellow. What wavelengths of visible light are being absorbed...

When oxygen is released as a result of photosynthesis, it is a by-product of which of the following?

When oxygen is released as a result of photosynthesis, it is a by-product of which of the following? a. reducing NADP+ b. splitting the water molecules c....

In autotrophic bacteria, where are the enzymes located that can carry on organic synthesis?

In autotrophic bacteria, where are the enzymes located that can carry on organic synthesis? a. chloroplast membranes b. nuclear membranes c. free...

In any ecosystem, terrestrial or aquatic, what group(s) is (are) always necessary?

In any ecosystem, terrestrial or aquatic, what group(s) is (are) always necessary? a. autotrophs and heterotrophs b. producers and primary comsumers c....

Where does the Calvin Cycle take place?

Where does the Calvin Cycle take place? a. stroma of the chloroplast b. thylakoid membrane c. cytoplasm surrounding the chloroplast d. chlorophyll...

What are the products of the light reactions that are subsequently used by the Calvin Cycle?

What are the products of the light reactions that are subsequently used by the Calvin Cycle? a. oxygen and carbon dioxide b. carbon dioxide and RuBP c....

Which of the following are products of the light reactions of photosynthesis that are utilized in the Calvin Cycle?

Which of the following are products of the light reactions of photosynthesis that are utilized in the Calvin Cycle?  a. CO2 and glucose b. H2O...

If photosynthesizing green algae are provided with CO2 synthesized with heavy oxygen (^18O), later analysis will show that all but one of the following compounds produced by the algae contain the ^18O label. That one is

If photosynthesizing green algae are provided with CO2 synthesized with heavy oxygen (^18O), later analysis will show that all but one of the following...