Glycogen is a polymer of ________ molecules.
A. starch
B. fructose
C. amino acid
D. glucose
Answer: D
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The central principle of physiology is
A) nutrition. B) reflexes. C) homeostasis. D) stimulation. E) temperature regulation.
Examination of a sample of cells reveals large numbers of mitochondria compared to most other cells. Which of the following is a likely reason for this?
A) The cells produce digestive enzymes. B) The cells produce steroid hormones. C) The cells have very high energy requirements. D) The cells synthesize transport proteins. E) The cells make antibodies.
What determines the movement of blood in systemic veins?
A. The blood pressure difference between systemic capillaries and the right atrium. B. The contraction and relaxation of skeletal muscles. C. The decrease of thoracic pressure and increase of abdominal pressure due to diaphragm movement. D. Valves in the veins. E. All of the above.
T lymphocytes mature primarily in the thymus
Indicate whether the statement is true or false.