Integrins Are Single-Pass Integral Membrane Proteins in the Plasma Membrane

question 16

Multiple Choice

Integrins are single-pass integral membrane proteins in the plasma membrane of animal cells and are involved in the interaction of the cell with the surrounding extracellular matrix. Which of the following descriptions do you think matches the transmembrane part of an integrin molecule?

• A) It forms a β barrel.
• B) It is an α helix that is bent in the middle.
• C) It is about 10 amino acids long, with every other amino acid side chain being hydrophobic.
• D) It folds in a conformation with maximal intrachain hydrogen-bonding.
• E) It is about 100 amino acids long.

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Definitions:

"CORFing"

An acronym for "Cutting Off Reflected Failure," a social behavior where individuals distance themselves from those who have failed to maintain their self-esteem.

"BIRGing"

"Basking in Reflected Glory," a social phenomenon where individuals associate themselves with the success of others to improve their self-esteem.

Cialdini

Refers to Robert Cialdini, an American psychologist known for his research on social influence, persuasion, and marketing.

Procrastination

The tendency to delay tackling tasks until the last minute.