The variable in the butterfly experiment is
a. butterfly wing pattern color.
b. butterfly species.
c. bird predator species.
d. rainforest region used.
e. percentage of survivors
A
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Which types of fish have gill slits hidden beneath a gill cover?
a. jawless fishes b. cartilagenous fishes c. bony fishes d. sharks and rays e. lampreys and hagfish
Osteoclasts function in bone remodeling to
a. free mineral ions. b. stimulate blood cell formation. c. accelerate bone repair. d. lay down a bony matrix. e. do all of these.
Which of the following is/are true about natural selection?
A. It assures the survival of every fit individual. B. It acts on genotypes rather than phenotypes. C. It always selects for more complex forms. D. On average, it favors the survival of individuals that have adaptive characteristics. E. All of the answer choices are correct.
The light reactions of photosynthesis, which form ATP and NADPH, take place in the ________.
A. nucleus B. stroma C. cytoplasm D. thylakoid membrane