The _______ hypothesis states that no difference exists due to the variable under investigation.
Answer: null
The _______ hypothesis states that no difference exists due to the variable under investigation.
Answer: null
Showing posts with label Studying Life. Show all posts
Showing posts with label Studying Life. Show all posts
Answer: null
Scientific investigations are based above all on the processes of _______ and _______.
Scientific investigations are based above all on the processes of _______ and _______.
Answer: observation; experimentation
Fungi and animals both belong to the _______ domain, and their cell structure is _______.
Fungi and animals both belong to the _______ domain, and their cell structure is _______.
Answer: Eukarya; multicellular
Multicellular organisms that are photosynthetic belong to the kingdom _______.
Multicellular organisms that are photosynthetic belong to the kingdom _______.
Answer: Plantae
A _______ tree shows the evolutionary relationships among species.
A _______ tree shows the evolutionary relationships among species.
Answer: phylogenetic
A Pacific tree frog has the scientific nomenclature of Hyla regilla. This particular tree frog belongs to the genus _______.
A Pacific tree frog has the scientific nomenclature of Hyla regilla. This particular tree frog belongs to the genus _______.
Answer: Hyla
Scientists who study evolution and classification of life's diverse organisms are called _______.
Scientists who study evolution and classification of life's diverse organisms are called _______.
Answer: systematists
There are three domains used to categorize life forms that have evolved separately for about a billion years: _______, _______, and _______.
There are three domains used to categorize life forms that have evolved separately for about a billion years: _______, _______, and _______.
Answer: Archaea; Bacteria; Eukarya
Single-celled organisms that lack discrete intracellular compartments belong to the two kingdoms: _______ and _______.
Single-celled organisms that lack discrete intracellular compartments belong to the two kingdoms: _______ and _______.
Answer: Archaea; Bacteria
In contrast to eukaryotic cells, prokaryotes lack discrete _______ compartments.
In contrast to eukaryotic cells, prokaryotes lack discrete _______ compartments.
Answer: intracellular
Some organelles in eukaryotes can be described as _______ within a cell.
Some organelles in eukaryotes can be described as _______ within a cell.
Answer: cells
About _______ years ago, prokaryotes acquired the ability to photosynthesize.
About _______ years ago, prokaryotes acquired the ability to photosynthesize.
Answer: 2.7 billion
The ability to use energy from sunlight to synthesize complex molecules is known as _______.
The ability to use energy from sunlight to synthesize complex molecules is known as _______.
Answer: photosynthesis
Fatlike molecules were the critical ingredient in the enclosure of biological molecules in _______ because these molecules are not _______ in water and tend to form membrane-like _______.
Fatlike molecules were the critical ingredient in the enclosure of biological molecules in _______ because these molecules are not _______ in water and tend to form membrane-like _______.
Answer: membranes; soluble; films
Currently, scientists agree with the estimate that life first appeared approximately _______ years ago.
Currently, scientists agree with the estimate that life first appeared approximately _______ years ago.
Answer: 4 billion
The total chemical activity of a living organism is called its _______.
The total chemical activity of a living organism is called its _______.
Answer: metabolism
____ are structural, physiological, or behavioral traits that enhance an organism's chance of survival and reproduction in its environment.
____ are structural, physiological, or behavioral traits that enhance an organism's chance of survival and reproduction in its environment.
Answer: Adaptations
Most living organisms consist of one or more _______, have changed or _______ over time, and can regulate their _______ environment.
Most living organisms consist of one or more _______, have changed or _______ over time, and can regulate their _______ environment.
Answer: cells; evolved; internal
Overfishing of the western bluefin tuna in the Gulf of Mexico breeding ground resulted in a serious decline in the population. Fishing quotas were established in the Gulf of Mexico to allow the endangered population to recover. Why did this policy fail to achieve the desired result?
Overfishing of the western bluefin tuna in the Gulf of Mexico breeding ground resulted in a serious decline in the population. Fishing quotas were established in the Gulf of Mexico to allow the endangered population to recover. Why did this policy fail to achieve the desired result?
a. The feeding grounds of the western bluefin are geographically separated from the feeding grounds of the eastern bluefin.
b. The breeding grounds of the western bluefin are geographically separated from the breeding grounds of the eastern bluefin.
c. Fisherman disregarded the policy.
d. Western and eastern populations of bluefin feed throughout the entire North Atlantic.
e. The policy was designed without advice and guidance from scientists.
Answer: D
Which of the following questions cannot be answered by means of the hypothetico-deductive method?
Which of the following questions cannot be answered by means of the hypothetico-deductive method?
a. Are bees more attracted to red roses than to yellow roses?
b. Are red roses more beautiful than yellow roses?
c. Why are red roses red?
d. Do red roses bloom earlier than yellow roses?
e. Are red roses more susceptible to mildew than yellow roses?37. Which of the following questions cannot be answered by means of the hypothetico-deductive method?
Answer: B
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