A Relationship in Which One Species Benefits While the Other

question 67

Multiple Choice

A relationship in which one species benefits while the other is neither helped nor harmed to any significant degree is best labeled

• A)competition
• B)predation
• C)commensalism
• D)parasitism
• E)mutualism

Recognize the role of MHC proteins in the immune response.

Differentiate the cellular responses mediated by various components of the immune system.

Explain the importance and function of antigen-presenting cells (APCs) and T-cell activation.

Understand the functional characteristics and roles of T cells (cytotoxic T cells, T-helper cells, regulatory T cells) in the immune system.

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Definitions:

Law of Effect

A principle in psychology that states behaviors followed by positive outcomes are likely to be repeated, while those followed by negative outcomes are less likely to be repeated.

Pleasurable Consequence

A positive outcome or reward that follows a behavior, increasing the likelihood of the behavior being repeated.

Positively Reinforced

A process in behavioral psychology whereby a behavior is encouraged by rewards, leading to an increase in the likelihood of its recurrence.

Anxiety

A feeling of worry, nervousness, or unease typically about an imminent event or something with an uncertain outcome.