The chromosome content of most human cells includes all of the following except
A. a pair of homologous X chromosomes (in females).
B. 2 pairs of sex chromosomes.
C. 23 pairs of chromosomes.
D. 22 pairs of autosomes.
E. a pair of nonhomologous X and Y chromosomes (in males).
B. 2 pairs of sex chromosomes.
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What can cause a buildup of free radicals that damage the cell —and ultimately, the individual?
What will be an ideal response?
____ assist and nourish cells that transmit electrical signals
a. Receptors b. Neurons c. Effector cells d. Glial cells e. Signal cells
The effect of population growth limiting factors begin to become evident at about the letter ____
a. A b. B c. C d. D e. E
The majority of mature, self-tolerant lymphocytes are found in
A. the MALT. B. lymph nodes. C. the thymus. D. the spleen. E. the tonsils.