A Protein Contains a Section Partially Embedded in a Cell

question 241

Multiple Choice

A protein contains a section partially embedded in a cell membrane and another section that extends out into the external environment.Which statement could be true about this protein?

• A) The protein is composed of a chain of alternating hydrophobic and hydrophilic amino acids.
• B) The protein is composed of a chain with a long stretch of hydrophobic amino acids and then another stretch of hydrophilic amino acids.
• C) The protein has two subunits, each containing alternating hydrophobic and hydrophilic amino acids.
• D) The protein is composed of either all hydrophobic amino acids or all hydrophilic amino acids, but not both.
• E) The protein is composed of a mix of hydrophobic amino acids and hydrophilic amino acids covalently modified and so converted to hydrophobic residues.

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Definitions:

Behaviour Modification

The use of empirically demonstrated behavior change techniques to improve behavior, such as altering an individual's behaviors and reactions to stimuli through positive and negative reinforcement.

Reinforcement

In psychology, a concept where a behavior is encouraged or strengthened by a consequence that follows it.

Modelling

The process of demonstrating a particular behavior or skill that others are expected to learn or emulate.

Mimicking

The act of imitating or copying the behavior, actions, or traits of others, often as a learning method or strategy for adaptation.