Cholesterol, though it is not an energy molecule, has importance in the body because it ________.
A) is a stabilizing component of the plasma membranes and is the parent molecule of steroid hormones
B) helps provide essential nutrients to the brain and lungs
C) helps mobilize fats during periods of starvation
D) enters the glycolytic pathway without being altered
A) is a stabilizing component of the plasma membranes and is the parent molecule of steroid hormones
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The head of the humerus corresponds to (the)
A) metaphysis of the bone. B) diaphysis of the bone. C) proximal epiphysis of the bone. D) distal epiphysis of the bone. E) None of the answers are correct.
Draw a flow chart that shows the components of the reflex in which an increase in blood PCO2 leads to increased ventilation.
What will be an ideal response?
Progesterone levels are highest during the ________ phase of the ovarian cycle.
Fill in the blank(s) with the appropriate word(s).
Which of the following is true regarding the blood-testis barrier?
A. It maintains testis temperature at 35°C. B. It prevents heat loss from the testes. C. It prevents antibodies in the blood from getting to the reproductive cells. D. It prevents blood from getting to the testes. E. It maintains testis temperature at 37°C.