The clear fluid found in whole blood in which the cells are suspended is called ______; however, when the clotting factors are removed, it is now called ______.
A. serum; plasma
B. plasma; serum
C. whole blood; serum
D. plasma; whole blood
B. plasma; serum
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The experiments of which of the following
researchers clearly distinguished DNA and NOT protein as the hereditary material? a. Pauling b. Hershey and Chase c. Griffith d. Watson and Crick e. Avery
The "powerhouse" of the cell is the
a. mitochondrion. b. Golgi body. c. nucleus. d. ribosome. e. endoplasmic reticulum.
Quorum sensing is ___:
a. the ability to respond to changes in population density b. a characteristic allowing secretion of a matrix c. dependent on direct contact among cells d. associated with colonies in broth culture
Which of the following statements concerning the causative agent of syphilis is TRUE?
A. It is a large helically coiled bacterium motile by means of endoflagella. B. It is an intracellular parasite. C. It is a non-motile comma-shaped bacterium. D. It is a large bacillus with peritrichous flagella. E. It is pleomorphic and motile by means of gliding motility.