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Biochemistry - Genetic Code and Regulation

Exercise : Genetic Code and Regulation - Section 1
  • Genetic Code and Regulation - Section 1
1.
Which of the following techniques was carried out by Nirenberg and Matthaei in 1961 to determine the first codon?
In vitro synthesis of a polypeptide using UUUUU
Labeled peptide binding to a ribosome
Mixed co-polymer mRNA synthesis
none of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
2.
Bacterial protein called catabolic activator protein (CAP) is an example of
negative control of gene expression
positive control of gene expression
second type of positive control of gene expression
none of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
3.
How many different codons are possible?
3
20
64
An infinite number
Answer: Option
Explanation:
No answer description is available. Let's discuss.
4.
The genetic code is
universal
universal except for rare exceptions in mitochondria and some protozoa
species-specific
kingdom-specific
Answer: Option
Explanation:
No answer description is available. Let's discuss.
5.
Which of the following has been used as an evidence that primitive life forms lacked both DNA and enzymes?
RNA can both code genetic information and act as a catalyst
DNA and enzymes are only present in the most advanced cells
Advanced cells lack RNA
All of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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