In fragile X syndrome, the fragile X gene contains the nucleotide triplet CGG that repeats 200-1000
times. Indicate whether the statement is true or false.
T
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In an atom that is NOT an ion, which of the following must be true?
A. The number of electrons equals the number of protons. B. The number of electrons equals the number of neutrons. C. The number of protons equals the number of neutrons.
Enhancement of a response to a stimulus by first presenting a strong or novel stimulus is called____
Fill in the blank with the appropriate word.
What do synaptic signaling and paracrine signaling have in common?
A. Cells release a signal that affects it and neighboring cells. B. Cells release a signal that affects cells at long distances. C. Cells release a signal through gap junctions to affect neighboring cells. D. Cells bind a membrane bound signal on a neighboring cell. E. Cells release a signal that affects neighboring cells.
In the above diagram, B represents which of
the following structures?
a. large diameter blood vessels b. capillary beds c. the zone of diffusion of gases and nutrients d. the heart e. capillary beds and the zone of diffusion of gases and nutrients