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Genetic Code and Regulation

Genetic Code and Regulation
How many different codons are possible?

3
64
An infinite number
20

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Genetic Code and Regulation
Bacterial protein called catabolic activator protein (CAP) is an example of

None of these
second type of positive control of gene expression
positive control of gene expression
negative control of gene expression

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Genetic Code and Regulation
The genetic code is

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

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

Two
Four
Three
One

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

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

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