In the Years Since the Proposal of the Fluid Mosaic

question 14

Multiple Choice

In the years since the proposal of the fluid mosaic model of the cell membrane, which of the following observations has been added to the model?

• A) The membrane is only fluid across a very narrow temperature range.
• B) Proteins rarely move, even though they possibly can do so.
• C) Unsaturated lipids are excluded from the membranes.
• D) The concentration of protein molecules is now known to be much higher.
• E) The proteins are known to be made of only acidic amino acids.

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Definitions:

Unilateral Contract

A contract in which only one party promises to perform without requiring a reciprocal promise to act from the other party.

Bilateral Contract

A legally binding agreement involving two parties where each is obligated to fulfill their respective promises or actions.

Enforceable Agreement

A contract or agreement that can be upheld and compelled by law.

Mirror-Image Rule

A contract law principle stating that an acceptance must exactly match the terms of the offer for a legally enforceable agreement to exist.