In photorespiration, there is a net gain of carbon
a. True
b. False
ANSWER: False
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Cell-signaling molecules are generally which type of macromolecule?
A. protein B. nucleic acid C. carbohydrate D. polysaccharide E. lipid
A substance that cannot be broken down into simpler substances by ordinary chemical or physical
techniques is a(n) ____.
a. molecule b. chemical c. compound d. element e. biological compound
A severely injured animal is able to still able to
defend itself due to the action of ___.
a. dopamine b. endorphins c. serotonin d. acetylcholine e. GABA
Which of the following statements is not true concerning the estrogen spike at the end of the follicular phase?
A. It has a positive feedback effect on the pituitary gland. B. It is followed by ovulation. C. It causes a decline in gonadotropin-releasing hormone from the hypothalamus. D. It is followed by a surge of LH. E. It has a positive feedback effect on the hypothalamus.