When a "New" Antigen First Challenges the Immune System, If

question 26

Multiple Choice

When a "new" antigen first challenges the immune system, if the primary immune response produces B cells, what are the fates of those B cells? I-Some of the B cells become plasma cells that secrete antibodies.II-Some of the B cells become memory cells and can produce a swifter response if the body encounters that particular antigen again.III-Some of the B cells secrete chemicals called pyrogens that travel to the brain inducing a fever.

• A)just II
• B)just I
• C)II and III
• D)I and II

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Definitions:

Type AB Blood

A blood type in the ABO blood group system that has both A and B antigens on the surface of the red blood cells and no antibodies in the plasma against either antigen.

Dosage Compensation

A mechanism to balance the expression of X-chromosomal genes in organisms with sex chromosomes, ensuring that one sex does not have double the gene products of the other.

Sex Chromosomes

Chromosomes that determine the sex of an organism, with common configurations including XX for females and XY for males in many species.

Humans

Humans are a species of bipedal primates belonging to the genus Homo, distinguished by their advanced cognitive abilities, complex social structures, and use of language and tools.