How could you tell the difference between a brachiopod and a clam?
a. brachiopod is sessile, clam is not
b. brachiopod has two valves, clam does not
c. brachiopod has a fleshy stalk (pedicel), clam does not
d. brachiopod is a filter feeder, clam is not
C
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Utilizing more motor units for stronger muscle contractions is called
A. fast-twitching. B. fatigue. C. aerobic capacity. D. recruitment. E. insertion.
Secretion of sex steroid hormones in males and females is controlled by ____
a. different receptors in males vs. females b. different hormones depending on sex c. the same hormones but different pathways depending on sex d. different pathways and hormones depending on the sex e. the same pathway and hormones regardless of sex
Which of the following is not involved in the increase in blood volume in a pregnant woman?
A. renin-angiotensin-aldosterone mechanism B. an increase in blood oxygen levels C. artery expansion D. progesterone E. sodium and water retention
Which is not a category of virulence factors?
A) immune system evasion B) nutrient acquisition C) toxins D) attenuation E) adhesion