Why Aren't Human Populations Evolving to Produce Immune Systems That

question 9

Multiple Choice

Why aren't human populations evolving to produce immune systems that are able to fight off MRSA and other "superbugs"?

• A) because bacteria do not apply a selection pressure on human populations
• B) because we do not have the mutations that would improve our immune systems
• C) because the rate of human evolution is much slower than bacterial evolution
• D) none of these
• E) all of these

Identify the psychological and cognitive changes associated with aging, including self-concept and personality traits.

Describe the concept of successful aging and the factors that contribute to it, including lifestyle choices and psychological resilience.

Understand the role and impact of spirituality and religiosity in the lives of older adults.

Analyze the impact of social theories on aging, including socioemotional selectivity theory and continuity theory.

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Definitions:

Sternberg's Triangular Model

A theory of love proposed by Robert Sternberg, which suggests that love has three components: intimacy, passion, and commitment.

Intimacy

A close, familiar, and usually affectionate or loving personal relationship with another person or group.

Testosterone

A steroid hormone that plays a key role in the development of male reproductive tissues and secondary sexual characteristics.

Aggressive Behaviors

Actions or behaviors intended to cause harm or discomfort to others.