All of the Following Are True of the Primary Response

question 76

Multiple Choice

All of the following are true of the primary response to antigen exposure except that

• A)it depends on antigen triggering the appropriate B cell.
• B)it requires B cell differentiation into plasma cells.
• C)it is delayed by the memory cell stage.
• D)circulating antibodies undergo a gradual,sustained rise.
• E)it peaks 1 to 2 weeks after the initial exposure.

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Definitions:

Isotonic

A solution having the same osmotic pressure as some other solution, typically that of a cell or body fluid, which prevents net movement of water across membranes.

Net Movement

The overall transfer or migration of substances or particles from one location to another, often described in terms of direction and magnitude.

Water

A transparent, tasteless, odorless, and nearly colorless chemical substance that is the main constituent of Earth's hydrosphere and the fluids of all known living organisms.

Plasmolysis

The process in which plant cells lose water in a hypertonic solution, causing the cell membrane to detach from the cell wall.