When stimulated by ____, arteries supplying the limbs _____, which increases blood flow to exercising muscles
A. sympathetic nerves; dilate
B. sympathetic nerves; constrict
C. parasympathetic nerves; dilate
D. parasympathetic nerves; constrict
E. ADH; constrict
A
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Adult stem cells are usually
A. differentiated. B. totipotent. C. pluripotent. D. multipotent.
Each of the following molecules is an electron carrier in the electron transport system except
A) flavoproteins. B) iron-containing cytochromes. C) iron-sulfur proteins. D) coenzyme Q. E) All of the above are electron carriers.
If IP3 binds a Ca2+ ligand-gated ion channel in the endoplasmic reticulum, then cytosolic Ca2+ levels will rise in the cell.
Answer the following statement true (T) or false (F)
The goal of the streak plate technique is to
A) compare how the shape, color and margin differ in colonies from a pure culture. B) isolate a pure culture for study from a single colony. C) spread out a thick layer of bacteria and isolate the bacteria that outcompete the rest. D) compare all of the colonies on a plate with a mixed culture. E) visualize all of the colonies on a plate from a pure culture.