What is the term for the segments of primary RNA that are cleaved and discarded by spliceosomes?
A. Exons
B. Anticodons
C. Genes
D. Codons
E. Introns
Answer: E
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As the result of an accident, Bill suffers a dislocated jaw. This injury would involve the
A) stylohyoid ligaments. B) hyoid bone. C) condylar process of the mandible. D) alveolar process of the mandible. E) greater horn of the hyoid bone.
Which of the following is an increase in the number of receptors making a target cell more sensitive to a hormone?
A. The antagonistic effect B. Up-regulation C. Enzyme amplification D. Down-regulation E. Negative feedback inhibition
Mucous membranes prevent most pathogens from entering the body because of the stickiness of the mucus and the presence of lysozymes.
Answer the following statement true (T) or false (F)
The term "retroperitoneal" may be used to describe the location of certain abdominal organs. This means that such organs are located
A. deep to the visceral peritoneum. B. between the visceral and parietal layers of the peritoneum. C. between folds of the parietal peritoneum. D. in the peritoneal cavity. E. posterior to the parietal peritoneum.