The figure illustrates bones of the right upper limb. What does "B" represent?
A. radius
B. carpals
C. phalanges
D. metacarpals
E. ulna
A
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Asymmetrical spacing of the backbones of the DNA double helix generates major and minor grooves.
a. true b. false
What characteristic of phospholipids allows them to form the double layer seen in cell membranes?
A. They are soluble in water. B. They are totally hydrophobic. C. They are totally nonpolar. D. They are amphipathic.
Which of the following is NOT an effect of gastrin?
A. Stimulates chief cells to secrete pepsinogen B. Stimulates parietal cells to secrete HCl C. Maintains structure of gastric mucosa D. Stimulates secretion of pancreatic juice enzymes
The extensor digitorum muscle is found in the
A. deep layer of the posterior compartment of the forearm. B. superficial layer of the posterior compartment of the forearm. C. deep layer of the anterior compartment of the forearm. D. superficial layer of the anterior compartment of the forearm.