Leukocytes
a. are responsible for the body's various immune defense strategies
b. spend most of their time circulating in the blood
c. are all produced in the lymph nodes
d. have all of the above characteristics
e. have characteristics a and b
A
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Spermatogenesis ________.
A) is the process of releasing mature sperm cells into the lumen of the seminiferous tubule B) involves a kind of cell division limited to the gametes C) results in the formation of diploid cells D) uses mitosis to produce gamete cells
The reason we can detect so many different odors is because each olfactory neuron is slightly different than the others, allowing for a wide range of odor sensations.
Answer the following statement true (T) or false (F)
Osteoporosis is most common in elderly women due to their lack of what?
A. Estrogen B. Osteoclast activity C. Parathyroid hormone D. Dietary calcium E. Vigorous exercise
The clear gel inside a cell is called ________
A) matrix B) interstitial fluid C) ground substance D) tissue fluid E) cytosol