25. An example of coordinate control is the down-regulation of ribosomal RNA
synthesis in response to amino acid starvation, which will cause synthesis of ribosomal
proteins to be limited. What is the correct order of the following events that
participate in the signaling process?
1. Binding of stringent factor to the ribosome
2. Formation of the unusual nucleotide ppGpp
3. Formation of the unusual nucleotide pppGpp
4. Binding of uncharged tRNA in the ribosomal A-site
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, 4, 1, 3, 2
2. Assuming that the average amino acid residue contributes 110 to the peptide
molecular weight, what will be the minimum length of the mRNA encoding a protein
of molecular weight 50,000?
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1,400 nucleotides
13. An amino acid that does not derive its carbon skeleton, at least in part, from
oxaloacetate is:
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proline
32. Which one of the following does not interact with mediator?
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TATA box
25. In homologous recombination in E. coli, the protein that moves along a double-
stranded DNA, unwinding the strands ahead of it and degrading them, is:
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RecBCD enzyme
15. The binding of CRP (cAMP receptor protein of E. coli) to DNA in the lac operon:
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assists RNA polymerase binding to the lac promoter.
4. Which one of the following is true about the genetic code?
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Several different codons may encode the same amino acid.
9. The chromosomal region that is the point of attachment of the mitotic spindle is the:
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centromere
8. Prokaryotic DNA polymerase III:
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, has a beta subunit that acts as a circular clamp to improve the processivity
of DNA synthesis
37. The most direct precursors of the nitrogens of UMP are:
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aspartate and carbamoyl phosphate
29. Lipoprotein particles in human blood do not contain:
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lecithin
8. Which of the following is not true of the fatty acid elongation system of vertebrate
cells?
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The immediate precursor of the added carbons is acetyl-CoA.
Which process or aspect is NOT associated with RecBCD?
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synthesis in response to amino acid starvation, which will cause synthesis of ribosomal
proteins to be limited. What is the correct order of the following events that
participate in the signaling process?
1. Binding of stringent factor to the ribosome
2. Formation of the unusual nucleotide ppGpp
3. Formation of the unusual nucleotide pppGpp
4. Binding of uncharged tRNA in the ribosomal A-site
Give this one a try later!
, 4, 1, 3, 2
2. Assuming that the average amino acid residue contributes 110 to the peptide
molecular weight, what will be the minimum length of the mRNA encoding a protein
of molecular weight 50,000?
Give this one a try later!
1,400 nucleotides
13. An amino acid that does not derive its carbon skeleton, at least in part, from
oxaloacetate is:
Give this one a try later!
proline
32. Which one of the following does not interact with mediator?
Give this one a try later!
TATA box
25. In homologous recombination in E. coli, the protein that moves along a double-
stranded DNA, unwinding the strands ahead of it and degrading them, is:
,Give this one a try later!
RecBCD enzyme
15. The binding of CRP (cAMP receptor protein of E. coli) to DNA in the lac operon:
Give this one a try later!
assists RNA polymerase binding to the lac promoter.
4. Which one of the following is true about the genetic code?
Give this one a try later!
Several different codons may encode the same amino acid.
9. The chromosomal region that is the point of attachment of the mitotic spindle is the:
Give this one a try later!
centromere
8. Prokaryotic DNA polymerase III:
Give this one a try later!
, has a beta subunit that acts as a circular clamp to improve the processivity
of DNA synthesis
37. The most direct precursors of the nitrogens of UMP are:
Give this one a try later!
aspartate and carbamoyl phosphate
29. Lipoprotein particles in human blood do not contain:
Give this one a try later!
lecithin
8. Which of the following is not true of the fatty acid elongation system of vertebrate
cells?
Give this one a try later!
The immediate precursor of the added carbons is acetyl-CoA.
Which process or aspect is NOT associated with RecBCD?
Give this one a try later!
