Non-REM sleep
A. is a time when the brain is very active.
B. is characterized by movements of the eyes.
C. is where we have our most memorable dreams.
D. comprises most of our sleep time.
Answer: D
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Which embryological structure(s) give(s) rise to the vertebral bodies?
A. Anulus fibrosus and nucleus pulposus B. Mesenchyme surrounding the neural tube C. Mesenchyme and sclerotomes D. The neural tube E. Longitudinal strips of condensed mesenchyme
IgG antibodies
A) are found in glandular secretions.
B) bind antigens in the extracellular fluid to B cells.
C) stimulate the release of histamine and other inflammatory chemicals.
D) are the first antibody type secreted, following initial exposure to an antigen.
E) can also cross the placenta and provide passive immunity to the fetus.
The testes are the male gametes.
Answer the following statement true (T) or false (F)
High ATP concentrations would be found in
A. active cells. B. resting cells. C. exhausted cells. D. dead cells. E. None of these choices is correct.