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Genetic Code and Regulation

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
How many different codons are possible?

3
An infinite number
20
64

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Genetic Code and Regulation
The genetic code is

universal except for rare exceptions in mitochondria and some protozoa
universal
kingdom-specific
species-specific

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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?

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

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Genetic Code and Regulation
In protein synthesis in prokaryotes

None of these
the initiating amino acid is phenyl alanine
the initiating amino acid is N- formyl methionine
the initiating amino acid is methionine

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Genetic Code and Regulation
In prokaryotes, AUG encodes

a stop codon
alanine
methionine
N-formyl methionine

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