Mammalian eyes sense light because the photoreceptor cells have molecules called opsins, which change structure when exposed to light. Which of the following plant molecules would be analogous to mammalian opsins in their light-sensing ability?

A) auxin and phytochrome
B) auxin and Pfr
C) Pfr and phytochrome
D) cytokinins and phototropins


C

Biology & Microbiology

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Genes that are located on the same chromosome and are a short distance apart are said to be ____

Fill in the blank with the appropriate word.

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Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?

What will be an ideal response?

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All of the following are responses to sympathetic outflow from the spinal cord except ________

a. respiration rate increases b. increased heart rate c. adrenal glands secrete epinephrine d. increased stomach and intestinal movements

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The ripened ovary of a flower, which is adapted to disperse seeds, is called a/an

A) ovule. B) casing. C) fruit. D) sporangium.

Biology & Microbiology