Define control by covalent modification. Give an example ofcontrol by covalent modification from glycogen metabolism.
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Metabolism is often regulated by:
a. | Allosteric effectors, covalent modification, enzyme sequestration, protein association, enzyme synthesis, enzyme degradation, temperature change, and pH change. | |
b. | Allosteric effectors, covalent modification, enzyme sequestration, protein association, enzyme synthesis, enzyme degradation, and pH change. | |
c. | Allosteric effectors, covalent modification, enzyme sequestration, protein association, enzyme synthesis, and enzyme degradation. | |
d. | Allosteric effectors, covalent modification, protein association, enzyme synthesis, enzyme degradation, temperature change, and pH change. | |
e. | Allosteric effectors, covalent modification, enzyme synthesis, enzyme degradation, and temperature change. |
please help with 10-15 :(
QUESTION 10
During signal transduction a major regulatory mechanism of protein function is covalent modification by attaching / detaching small molecules.
True
False
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QUESTION 11
Most of the mechanisms implicated in modification of the enzymatic activity are also implicated in the modification of the DNA-binding activity of proteins that regulate transcription. An important EXCEPTION of this rule is:
Non-covalent modification of the protein. | ||
Modification of the protein by attaching or detaching small molecules. | ||
Limited proteolysis. | ||
All of the above are exceptions. |
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QUESTION 12
It is reasonable to predict that the metabolic adaptation occurring during the lag phase of a bacterial culture involved signaling transduction.
True
False
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QUESTION 13
Microorganism harboring mutations in signal transduction pathways unlikely will fail to adapt to the environment.
True
False
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QUESTION 14
During signal transduction a major regulatory mechanism of protein function is covalent modification by limited proteolysis
True
False
0.32 points
QUESTION 15
The peptidyl transferase
Load the amino acid into the tRNA | ||
Synthesize the peptidic bond conecting amino acids in the nascent protein | ||
Load the mRNA onto the ribosome | ||
Allow the amino-acyl tRNA to bind to the E site |