When Voltage-Gated Na⁺ Channels of a Resting Neuron Open

question 36

Multiple Choice

When voltage-gated Na⁺ channels of a resting neuron open,

• A) Na⁺ enters the neuron.
• B) Na⁺ leaves the neuron.
• C) the neuron depolarizes.
• D) Na⁺ enters the neuron and the neuron depolarizes.
• E) Na⁺ leaves the neuron and the neuron depolarizes.

Apply social exchange theory to explain the dynamics of group inclusion and membership decisions.

Distinguish between similarity and complementarity principles and their roles in group formation.

Apply the elaboration principle to illustrate the expansion of personal friendship networks.

Describe the support mechanisms groups provide to their members.

---

Definitions:

Fragile X Syndrome

A genetic condition that causes a range of developmental problems including learning disabilities and cognitive impairment, linked to a mutation of the FMR1 gene on the X chromosome.

Gene

A unit of heredity that is transferred from a parent to offspring and is held to determine some characteristic of the offspring.

X Chromosome

One of the two sex chromosomes, X and Y, with the X chromosome carrying genes essential for the development of female physical characteristics and playing a role in male development as well.

Brain Development

The process by which the nervous system, including the brain, grows, matures, and learns, starting from before birth and continuing into adulthood.