How Do Even the Lowest Single-Channel Conductance Gap Junctions Provide

question 51

Multiple Choice

How do even the lowest single-channel conductance gap junctions provide a significant path for current flow between cells?

• A) Their single-channel conductance can be modified by neuronal activity.
• B) There is a large driving force that favors ion movement across gap junctions.
• C) They are typically expressed at a local high density.
• D) Ions lose their hydration shell as they pass through the pore of gap junctions.
• E) Even the lowest single-channel conductance gap junction forms a very wide pore for the movement of ions across the membrane.

Identify the factors that contribute to the diversification of species in different habitats.

Analyze the application of different species concepts in identifying species.

Comprehend the role of ecological factors in species adaptation and divergence.

Understand the process and implications of polyploid speciation.

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Definitions:

ERP

Event-Related Potentials; brain responses that are the direct result of a specific sensory, cognitive, or motor event.

Brain Activity

The functioning and processes occurring within the brain, including neural activity and the coordination of mental and physical actions.

Medulla

The base of the brainstem; controls vital life-sustaining functions such as heartbeat, breathing, blood pressure, and digestion.

Pons

A crucial structure in the brainstem that plays key roles in sleep and dreaming, arousal, and coordination of movement.