For a B cell to be activated, it must __________.

a. be bound by a helper T cell at a class II MHC and bind an antigen to a surface antibody
b. bind an antigen to a surface antibody
c. undergo the process of opsonization
d. be bound by a helper T cell at a class II MHC


Answer: a. be bound by a helper T cell at a class II MHC and bind an antigen to a surface antibody

Anatomy & Physiology

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What feature of your ear accounts for its ability to regain its shape after it has been deformed or compressed?

A. The elastic fibers present in the ear's muscles B. The ear has a built-in memory based upon its overall size and shape C. The ear's skin is filled with elastic fibers that contract after being stretched D. There is an abundance of reticular fibers forming a dense meshwork E. The elastic fibers present in the ear's cartilage

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Histamine is secreted by cells called __________.

Fill in the blank(s) with the appropriate word(s).

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Suspected antigens are injected into the skin layer in a/an ____________ skin test

Fill in the blank(s) with correct word

Anatomy & Physiology

Pancreatic acinar cells are specialized for secreting digestive enzymes ultimately into the small intestine. This specialization reflects an elaboration of which of the following basic cell functions?

a. obtaining oxygen and nutrients b. eliminating wastes c. synthesizing components needed for the cell's survival d. controlling movement of materials between the cell and its environment e. reproducing

Anatomy & Physiology