The presence of cholesterol molecules in plasma membranes is to
A. stabilize the phospholipids bilayer.
B. create a mosaic pattern.
C. allow the buildup of fats.
D. change the chemical nature of the membrane.
Answer: A
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The role of the spleen is slightly different from other lymph organs because it
A) produces antibodies. B) produces memory cells. C) filters blood. D) filters lymph. E) contains lymphocytes.
Aging has what effect on the skeletal system?
A) progressive loss of processes and tuberosities B) fusion of joints, especially in the vertebral column C) loss of calcium and collagen fibers from matrix D) increase in the number of cranial foramina E) increase in adipose tissue in epiphyses
An egg-bearing animal is said to be:
A) egg bound B) oviparous C) viviparous D) oviladen
A spinal nerve passing through the intervertebral foramen is
A) composed of efferent fibers only. B) associated with the vertebra above. C) composed of afferent fibers only. D) associated with cranial nerve C1.