You Have Isolated a Previously Unstudied Protein, Identified Its Complete

question 30

Multiple Choice

You have isolated a previously unstudied protein, identified its complete structure in detail, and determined that it catalyzes the breakdown of a large substrate. You notice it has two binding sites. One of these is large, apparently the binding site for the large substrate; the other is small, possibly a binding site for a regulatory molecule. What do these findings tell you about the mechanism of this protein?

• A) It is probably an enzyme that works through allosteric regulation.
• B) It is probably a structural protein found in cartilage or skeletal tissue.
• C) It is probably an enzyme that works through competitive inhibition.
• D) It is probably a cell membrane transport protein-like an ion channel.
• E) It is probably a structural protein that is involved in cell- to- cell adhesion.

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Definitions:

Cerebellum

A part of the brain located at the back of the skull, responsible for coordinating voluntary movements, balance, and posture.

Thalamus

A brain structure that acts as a relay station, processing and transmitting sensory information to the appropriate areas of the brain.

Hippocampus

A part of the brain within the temporal lobe involved in memory formation, organization, and retrieval, as well as spatial navigation.

Sperling's Experiment

A psychological experiment conducted by George Sperling that demonstrated the existence of visual sensory memory.