The complex structures of DNA and protein found in the cell nucleus are
A) nucleoplasm.
B) chromosomes.
C) histones.
D) nucleases.
E) mitochondria.
Answer: B
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Wallerian degeneration involves the breakdown of
A. the segments of axon and myelin sheath between the site of damage and the peripheral effector. B. the segments of axon and myelin sheath between the site of damage and the cell body. C. the neurilemma both central and peripheral to the site of trauma. D. macrophages and microglia that have completed the job of CNS cleanup after trauma.
If a patient becomes dehydrated, the percentage of plasma in a centrifuged sample of his or her blood would likely
A. increase. B. not change. C. decrease.
It is best to catch a pig by grasping the front leg
Indicate whether the statement is true or false
Once inside the sympathetic trunk, the sympathetic preganglionic axons
A. remain at the level of entry. B. travel inferiorly. C. follow any of the routes listed. D. travel superiorly.