An endergonic reaction can proceed only if it absorbs:a
randomly available free energy.
b. less free energy than is released by a coupled exergonic reaction.
c. more free energy than is released by a coupled exergonic reaction.
d. less free energy than is released by a coupled endergonic reaction.
e. the same amount of free energy that is absorbed by the enzymatic breakdown of proteins.
b
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To counter the ingestion of excess salts, marine teleost fish have specialized cells in their gills that pump _____ ions into the surrounding seawater
As these ions leave the fishes' bodies, they create an electrical gradient that is balanced when _____ ions leave their bodies as well. A. chloride; sodium B. potassium; magnesium C. calcium; sodium D. sodium; chloride E. magnesium; potassium
Which of the following statements is true?
A. The citric acid cycle begins and ends with pyruvate. B. Cellular respiration will eventually produce three ATP molecules. C. Aerobic respiration of glucose has five phases. D. Aerobic respiration releases oxygen and uses carbon dioxide. E. The end product of glycolysis is pyruvate.
Small lakes and ponds usually lack a profundal zone. Indicate whether the statement is true or false
Crop rotation occurs where different types of plants are grown on the land each season. If you had no access to chemical fertilizers, which of the following would be best to include in your rotation cycle?
A) beans B) cotton C) corn D) tobacco