Which one of the following statements best represents the relationship between cellular respiration and photosynthesis?
A. Photosynthesis stores energy in organic
molecules, while respiration releases it.
B. Photosynthesis occurs only during the day
and respiration occurs only at night.
C. Respiration occurs only in animals and
photosynthesis occurs only in plants.
D. Respiration stores energy in organic
molecules, while photosynthesis releases it.
E. Photosynthesis reverses the biochemical
pathways of respiration.
A
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Which of these species' population growth rate is least affected by the number of males?
a. northern elephant seals b. trumpeter swans c. Canadian geese d. European rabbits e. Norwegian rats
The wings of a bird and the wings of a butterfly are ____ and show morphological ____
a. homologous; convergence b. analogous; convergence c. homologous; divergence d. analogous; divergence e. similar; evolution
Why doesn't every cell in the body respond to every hormone circulating in the bloodstream?
a. Each cell has a limited number of protein channels that shuttle hormones through its membrane. b. Not all hormones can diffuse through all cell membranes. c. The concentration of some hormones is too low to stimulate every cell. d. Each cell has specific surface receptors, which interact only with hormones that they recognize. e. Although all hormones bind to all cell surfaces, some cells lack second messengers for expression.
Which of the following conclusions is supported by the research of both Went and Charles and Francis Darwin on shoot responses to light?
A) When shoots are exposed to light, a chemical substance migrates toward the light. B) A chemical substance involved in shoot bending is produced in shoot tips. C) Once shoot tips have been cut, normal growth cannot be induced. D) Light stimulates the synthesis of a plant hormone that responds to light.