When an antigen complex is bound to a Class I MHC molecule, it can stimulate a ________.
A) NK cell.
B) cytotoxic T cell.
C) plasma cell.
D) B cell.
E) helper T cell.
B) cytotoxic T cell.
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The study of the flow of energy and its transformations is called
A) energetics. B) glycolysis. C) cellular respiration. D) thermodynamics. E) metabolism.
In the process of ________, two substances are moved across a cell membrane in the same direction without directly using cellular energy. One of the substances can be moved against a concentration gradient by this process
A) countertransport B) cotransport C) simple diffusion D) active transport E) co-osmosis
________ employ a "respiratory burst" to produce bactericidal chemicals such as hydrogen peroxide (H2O2) and hypochlorite (HClO).
A. Basophils B. Neutrophils C. Cytotoxic T cells D. Natural killer cells E. Suppressor T cells
A type of farsightedness that results from a loss of lens elasticity with age is
-myopia. -hyperopia. -emmetropia. -presbyopia. -diplopia.