A rise in sodium levels and extracellular volume leads to a rise in blood pressure. As a result, ____.
A. renin levels rise, but aldosterone levels fall
B. renin levels fall, but angiotensin levels rise
C. renin and aldosterone levels rise
D. renin and aldosterone levels drop
E. renin levels drop, but aldosterone levels remain the same
Answer: D
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a. M phase b. G0 c. S phase d. R phase
In comparing mitosis and meiosis, which of the
following statements is TRUE?
a. Crossing over occurs in a prophase of meiosis and of mitosis. b. The product of both is two cells. c. In both processes, homologous chromosomes pair up. d. In meiosis, sister chromatids separate in a metaphase, whereas in mitosis they separate in an anaphase. e. Anaphase of mitosis is most like Anaphase II of meiosis.
Four of the five structures listed below are sites
where cartilage is found. Select the exception. a. embryonic skeleton b. vertebral discs c. external ear d. end of long bones in skeleton e. skin
The organisms demonstrated in Image C are:
a) Gram positive b) Gram negative c) Acid fast d) Argentaffin