Glial cells function in which of the following roles?
A) All of the listed responses are correct.
B) Nourishing neurons
C) Insulating axons of neurons
D) Regulating extracellular fluid around some neurons
E) Transmitting signals
Answer: A) All of the listed responses are correct.
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An oil spill occurs, and Greg (a member of the clean up team) suggests adding fertilizer. Why is he making this suggestion?
A. The fertilizer encourages the growth of microbes that can break down the oil. B. The chemicals in the fertilizer digest the oil residues. C. The fertilizer interacts with the oil droplets and renders them harmless. D. The fertilizer volitizes the oil.
Acetylated histone tail lysines are associated with chromatin that is
A) open. B) closed. C) transcriptionally inactive. D) newly replicated. E) about to replicate.
What happens to each daughter cell at the conclusion of mitosis?
a. It has DNA identical to the parent cell. b. It has twice the cytoplasm and the same amount of DNA as the parent cell. c. It has twice the amount of DNA and half the cytoplasm of the parent cell. d. It has half the DNA and half the cytoplasm found in the parent cell.
Plasma that leaks out of the blood in the capillary beds is returned to the venous circulation by
A) the lymphatic system. B) the small intestine. C) the inflammatory response. D) suppressor B cells.