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Genetic Code and Regulation

Genetic Code and Regulation
Translation begins

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

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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?

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

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Genetic Code and Regulation
How many amino acids will be encoded by 5' GAU GGU UGA UGU 3' sequence?

One
Four
Three
Two

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

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Genetic Code and Regulation
In prokaryotes, AUG encodes

alanine
methionine
a stop codon
N-formyl methionine

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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?

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

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