During the Secondary Response to Antigens Following a Previous Initial

question 70

Multiple Choice

During the secondary response to antigens following a previous initial exposure,

• A) IgM molecules first appear in the bloodstream, followed by a slow rise in IgG.
• B) an immediate rise in IgG concentrations occurs.
• C) the antigen must first activate the appropriate B cells.
• D) the antibody levels do not peak until one to two weeks after antigen exposure.
• E) memory B cells do not differentiate into plasma cells.

---

Definitions:

Cerebrum

The largest part of the brain, consisting of the right and left hemispheres, responsible for integrating sensory input, coordinating movement, and higher cognitive functions such as reasoning and emotion.

Lobe

Rounded, projecting part, such as the lobe of a lung, the liver, or a gland.

Association Fibers

Nerve fibers that connect different regions within the same hemisphere of the brain, facilitating communication between them.

Cerebral Cortex

This refers to the brain's cerebrum's outer neural tissue, instrumental in controlling memory, cognition, consciousness, thought, language, perception, and attention.