Which of the following would be an example of the process taking place at B?
A)the movement of a specific protein from the membrane to the cytoplasm
B)the binding of a chemical messenger activating a cytoplasmic enzyme, such as kinase, that leads to specific cellular responses
C)the transport of a specific chemical messenger into the cell
D)the conversion of a chemical messenger molecule into a specific product
B)the binding of a chemical messenger activating a cytoplasmic enzyme, such as kinase, that leads to specific cellular responses
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The more movable end of a muscle is its
A) origin. B) source. C) insertion. D) fulcrum.
Before an antigen can stimulate a lymphocyte, it must first be processed by __________.
a. a macrophage b. an NK cell c. a neutrophil d. a cytotoxic T cell
All of the following are part of the limbic system EXCEPT the
A) amygdala B) fornix C) medulla D) hippocampus
Which of these cell types produce and help circulate cerebrospinal fluid?
A) astrocytes B) microglia C) ependymal cells D) Schwann cells E) oligodendrocytes