How Did the Inactivation of a Gene That Now Encodes

question 66

Multiple Choice

How did the inactivation of a gene that now encodes a nonfunctional myosin protein affect human chewing muscles?

• A)No effect because humans have over 40 closely related myosin genes.
• B)No effect because myosin is not essential for life.
• C)The loss of this myosin causes smaller and weaker chewing muscles in humans.
• D)No effect because other proteins in the body can do the same thing as myosin.
• E)The loss of this myosin causes greater flexibility of chewing muscles in humans.

Recognize the role of interindividual variability in cognitive abilities and experiences during middle adulthood.

Understand the components and development of fluid and crystallized intelligence, and how they manifest in middle adulthood.

Learn about the physiological changes and health challenges encountered in middle adulthood, especially related to menopause and osteoporosis.

Understand the importance and method of maintaining cognitive and physical health in middle adulthood.

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Definitions:

"Hot" and "Cool" Systems

Terms used in psychology to describe the emotional, impulsive system ("hot") and the rational, deliberative system ("cool") of cognitive processing.

Phineas Gage

A famous case study in the field of neuroscience and psychology involving a railroad worker who survived a severe brain injury in the 19th century, significantly altering his personality.

Brain Injury

Damage to the brain that can result from traumatic impacts, diseases, or disorders, affecting cognitive and physical functioning.

Construal Level Theory

The theory that people focus more on concrete details when thinking about the near future and focus more on abstract meaning when thinking about the distant future.