In the U.S. over ____ of the coastal wetland habitats have been destroyed
a.
b.
c.
d.
e.
B
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Which of the following BEST describes an epitope?
a. the antigen binding site of an antibody molecule b. found only in IgG and IgM c. part of an antigen that stimulates production of, and binds to, a specific antibody d. too small to stimulate an immune response e. a complement protein that initiates lysis of target cells
The organelle that carries out photosynthesis in plants is the
A. lysosome. B. chlorophyll. C. chloroplast. D. ribosome. E. mitochondria.
The process by which cell lineages become specialized in composition, structure, and function is referred to as
a. apoptosis. b. cytoplasmic localization. c. differentiation. d. embryonic induction.
What hormone helps with adaptation to long term stress?
A. Epinephrine B. Insulin C. Melatonin D. Glucocorticoids E. Glucagon