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.

Anatomy & Physiology

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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.

Anatomy & Physiology

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

Anatomy & Physiology

________ 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

Anatomy & Physiology

A type of farsightedness that results from a loss of lens elasticity with age is

-myopia. -hyperopia. -emmetropia. -presbyopia. -diplopia.

Anatomy & Physiology