The enzyme DNA polymerase is synthesized
A. at the rough endoplasmic reticulum, and it is secreted from the cell.
B. at a ribosome, and it remains within the cell.
C. in the nucleus, and it is converted to RNA for export outside the cell.
D. at the Golgi apparatus, and it is embedded in the cell membrane.
Answer: B
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A hypertonic solution
A) would cause cells to swell when placed in the solution. B) causes water to rush inside cells. C) has a lower osmotic pressure than do the cells in the solution. D) has a greater concentration (number) of solute particles than do the cells in the solution.
Choose the complete list of lobes of the cerebrum
What will be an ideal response?
Pepsinogen is produced by ________ and is activated by ________, which is secreted by ________.
A. chief cells; hydrochloric acid (HCl); parietal cells B. parietal cells; carbonic anhydrase (CAH); chief cells C. parietal cells; hydrochloric acid (HCl); chief cells D. chief cells; carbonic anhydrase (CAH); parietal cells E. enteroendocrine cells; carbonic anhydrase (CAH); parietal cells
What signal causes the heart to secrete atrial natriuretic hormone?
a)increased blood pressure b)decreased blood pressure c)increased Na+ levels d)decreased Na+ levels