Anabolic steroids used by some athletes are compounds that would be classified as
A. carbohydrates.
B. nucleic acids.
C. lipids.
D. proteins.
C. lipids.
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Why is photorespiration more of a problem for a plant when their stomata are closed?
A. Oxygen, from water in photosystem I, cannot leave the leaf, and competes with carbon dioxide for rubisco's active site. B. Oxygen, from photosystem I, cannot leave the leaf and causes hypertension to occur in the leaves. C. Carbon dioxide levels increase from the light reactions, and compete with oxygen for rubisco's active site. D. Oxygen cannot enter the leaf, blocking normal respiration, so the plants switch to photorespiration. E. Water is lost when the stomata are open, and is not available to accept electrons from photosystem I.
Heating up a reaction increases the speed of a reaction until the ____
a. enzyme denatures b. heat changes the pH of the reaction c. maximum speed is achieved d. cofactors can't bind the enzyme e. reaction begins to experience feedback inhibition
Vomiting in the early stages, or excessive antacid intake can lead to.
A) metabolic acidosis. B) metabolic alkalosis. C) respiratory acidosis. D) respiratory alkalosis.
________ bacteria convert nitrate into atmospheric nitrogen.
A. Denitrifying B. Ammonifying C. Nitrifying D. Detritivorous