Immunological Memory Accounts for

question 59

Multiple Choice

Immunological memory accounts for

• A) the human body's ability to distinguish self from nonself.
• B) the observation that some strains of the pathogen that causes dengue fever cause worse disease than others.
• C) the ability of a helper T cell to signal B cells via cytokines.
• D) the ancient observation that someone who had recovered from the plague could safely care for those newly diseased.
• E) the ability of the immune system to present antigen fragments in association with MHC antigens.

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Definitions:

Variable Reinforcements

A reinforcement schedule in which rewards are given out at unpredictable intervals, which can lead to more consistent patterns of behavior.

Fixed Schedules

Time management systems where tasks, activities, or work shifts are planned at specific, unchanging times.

Extinguish

To put out a fire or light, or in psychological terms, to diminish a conditioned response by removing the stimulus that elicited it originally.

Behavioural Learning

A process of acquiring new, or modifying existing, knowledge, behaviors, skills, or preferences through interactions and responses to stimuli.