Aerobic respiration is more efficient than anaerobic fermentation, but the latter is oxygen-independent.
Answer the following statement true (T) or false (F)
True
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Amylase is an enzyme that promotes the breakdown of starches during digestion. Which of the following describes the method by which amylase functions?
A. It catalyzes starch breakdown without being changed or depleted. B. It changes its composition in order to break starch down itself. C. It functions as a hormone that signals for starch breakdown to begin. D. It inhibits chemical reactions by being changed or depleted by the starch.
Which muscles help us in the initial breakdown of food?
A. Extrinsic eye muscles B. Muscles of mastication C. Muscles that move the tongue D. Muscles of facial expression E. Muscles of the pharynx
Each hemoglobin molecule is composed of four heme groups. The hemo groups contain iron (Fe). How many oxygen molecules can a hemoglobin combine with?
A) one B) two C) four D) eight
Aldosterone produces all of the following physiologic effects, EXCEPT:
A) increased water reabsorption by the kidneys. B) retention of potassium ions in the body. C) increased sodium and chloride reabsorption. D) decreased reabsorption of potassium ions.