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Genetic Code and Regulation

Genetic Code and Regulation
Codon that specify the amino acids often differs in the

none of these
first base
third base
second base

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Genetic Code and Regulation
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 these

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Genetic Code and Regulation
Translation begins

at the start codon
on the lagging strand
at the replication fork
in nucleus

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Genetic Code and Regulation
The sequence of one strand of DNA is: 5' ATTGCCA 3', what is the sequence of the other strand?

5' TGGCAAT 3'
5' ATTGCCA 3'
5' TAACGGT 3'
5' UAAGCCU3'

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Genetic Code and Regulation
Which of the following techniques was carried out by Nirenberg and Matthaei in 1961 to determine the first codon?

None of these
In vitro synthesis of a polypeptide using UUUUU
Labeled peptide binding to a ribosome
Mixed co-polymer mRNA synthesis

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Genetic Code and Regulation
Which of the following has been used as an evidence that primitive life forms lacked both DNA and enzymes?

All of these
DNA and enzymes are only present in the most advanced cells
Advanced cells lack RNA
RNA can both code genetic information and act as a catalyst

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