In Laboratory Experiments, Fear and Joy

question 58

Multiple Choice

In laboratory experiments, fear and joy

• A) result in an increase in heart rate.
• B) stimulate different facial muscles.
• C) increase heart rate and stimulate different facial muscles.
• D) result in a decrease in heart rate.

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Definitions:

ATP

Adenosine Triphosphate, a molecule that stores and transfers energy within cells, crucial for many cellular processes.

Facilitated Diffusion

The passive transport of ions or molecules by a specific carrier protein in a membrane. As in simple diffusion, net transport is down a concentration gradient, and no additional energy has to be supplied. Compare with diffusion and active transport.

Transmembrane Protein

A type of protein that spans across the lipid bilayer of cell membranes, facilitating various cellular functions including transport and signaling.

Concentration Gradient

The gradual difference in the concentration of solutes in a solution between two regions, often leading to diffusion from an area of higher concentration to lower concentration.