During which of the phases of cellular respiration is the majority of ATP formed?
A. Krebs cycle
B. processing of pyruvic acid for the Krebs cycle
C. glycolysis
D. electron transport
E. All phases produce the same number of ATP molecules.
Answer: D
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Which of the following organic macromolecules provides energy as well as structure to plants and animals?
a. proteins b. lipids c. carbohydrates d. nucleic acids
A drug called Coumadin interferes with the action of vitamin K in the liver. What effect will Coumadin have on blood-clotting mechanisms?
A) Coumadin will make it necessary for the patient to eat extra leafy green vegetables. B) Vitamin K will not be absorbed from the digestive tract. C) The liver will not be able to produce needed clotting factors. D) Nothing, because vitamin K is not necessary for blood clotting.
Blood pressure is highest in the __________
a. veins b. arteries c. capillaries d. venules e. arterioles
Red muscle fibers contain an abundance of _____ for aerobic respiration.
A. myosin B. indentations C. myofibrils D. sarcomeres E. myoglobin