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Question
All are characteristics of catabolic activator protein (CAP) EXCEPT:a. ensures that the operons necessary for metabolism for alternate energy sources remains repressed until the supply of glucose is exhausted.
b. overrides the influence of any inducer that might be present.
c. cAMP enhances CAP's affinity for DNA.
d. N-terminal end binds cAMP and C-terminal end binds DNA.
e. all are true.
Answer
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Related questions
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In general, proteins whose folding is chaperone-dependent start the folding process first with ____ and then are passed as ____ folded intermediates to ____.
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b. Hsp90; un-; chaperonin
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d. Hsp40; partially; Hsp70
e. Hsp60; partially; Hsp40
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Which of the following is responsible for Alzheimer's disease?
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Q:
In a class I aminoacyl-tRNA synthetase, which of the following reacts with the acyl phosphate formed during the reaction of ATP with the amino acid?a. 5'-hydroxyl of the nucleotide on the 5' end of the tRNA moleculeb. 3'-hydroxyl of the nucleotide on the 5' end of the tRNA moleculec. 2'-hydroxyl of the nucleotide on the 5' end of the tRNA moleculed. 3'-hydroxyl of the nucleotide on the 3' end of the tRNA moleculee. 2'-hydroxyl of the nucleotide on the 3' end of the tRNA molecule
Q:
Each of the following statements regarding ways in which eukaryotic protein synthesis differs from prokaryotic protein synthesis is true EXCEPT:
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b. prokaryotes use a 30S small ribosomal subunit, while eukaryotes use a 40S small ribosomal subunit
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Q:
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Q:
Termination of translation in prokaryotic cells requires:
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b. interaction of release factors with the termination codon.
c. ternary interaction of the release factor and the termination tRNA with the termination codon.
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Q:
Which of the following does not reqire GTP hydrolysis?
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b. the binding of the aminoacyl tRNA to the A site during elongation
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Q:
Which of the following statements is true regarding the formylmethionine that serves as the first amino acid in bacterial protein synthesis?
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Q:
Mitochondrial and chloroplastic ribosomes resemble ____ ribosomes.
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Q:
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b. asp; ala; polycationic
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Q:
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Q:
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Q:
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Q:
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Q:
The linkage between the amino acid and the tRNA in an amino-acyl tRNA complex is:
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Q:
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Q:
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Q:
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Q:
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Q:
The eukaryotic transcription factor that exhibits a sequence specificity for the TATA box is:
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Q:
All are correct about enhancer sequences in eukaryotic cells EXCEPT:
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Q:
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Q:
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Q:
Which of the following statements explains why the adenine analog, 2-aminopurine (2-AP), can cause mutations in DNA when it is inserted in place of a site normally occupied by A?
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b. 2-AP undergoes oxidative deaminiation to hypoxanthine which basepairs with C
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Q:
Misincorporation of all subsequent amino acids results from ____ mutations.
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Q:
Mutations in DNA may result from all of the following EXCEPT:
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b. physical insults on the cell, such as UV light.
c. errors in transcription.
d. chemical mutagens.
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Q:
A transition mutation would be replacing A by:
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b. C.
c. U.
d. G.
e. either T or C
Q:
____ promotes the formation of covalent bonds between ____ thymine residues in a DNA strand creating a ____ ring called a thymidine dimer.
a. Visible light; adjacent; cyclohexyl
b. Visible light; nearby; cyclobutyl
c. UV light; adjacent; cyclobutyl
d. UV light; nearby; cyclohexyl
e. IR light; adjacent; cyclobutyl