If you were asked to point to the site in the brain which controls automatic functions like breathing, you would point to the
A. cerebellum.
B. hypothalamus.
C. medulla oblongata.
D. pons.
E. cerebrum.
C. medulla oblongata.
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Which is/are true of coenzymes?
A. They are organic molecules. B. They transfer atoms from one molecule to another. C. They may bind to a number of different enzymes. D. They are synthesized from vitamins. E. All of the choices are correct.
Among the mammals, only some primates (including most humans) have color vision. What was the likely advantage that probably drove the evolution of primate color vision?
A. The ability to identify plants with medicinal value. B. The ability to find ripe fruit. C. The ability to enjoy the aesthetic value of flowers. D. The ability to prepare for winter as portended by autumn colors of leaves. E. The ability to identify grains most appropriate for domestication.
Which proteins form channels in the membrane that allow selected polar molecules and ions to pass through and
across the membrane?
a. transport proteins b. recognition proteins c. receptor proteins d. cell adhesion proteins e. nuclear proteins
When a molecule is reduced, it _________
a. gains electrons b. loses electrons c. stores electrons d. loses energy e. burns energy