QUESTION 5 How many codons in DNA encode each amino acid ? O Only 1 O More than

Question

QUESTION 5 How many codons in DNA encode each amino acid ? O Only 1 O More than 2 O Less than 4 O From 1 to 6 QUESTION6 In the final stages of a protein purification a protein elution peak is distributed over 4 fractions of 1ml each. The absorbance and the enzymatic activity at saturating substrate concentration were recorded for each fraction. What can you say about the specific the 0.150 2 0.3 150 3 0.5 100 4 0.2 20 activity of in the each fraction and the homogeneity of the peak. Fraction A280 Enzyme activity (AuMol product/min AplL solutlon) 1 The purity of the enzyme, as evidenced by specific activity, increases from fraction 1 to fraction 4 The specific activity decreases from fraction 1 to fraction 2. The specific activity is uniform across these 4 fractions suggesting that the protein is pure O The purity of the protein is higher in fraction 1 than in fraction 4 B and D

Explanation / Answer

From 1 to 6 codons can code for each amino acids. This is redundancy of amino acids. One codon only code for a single amino acid. Multiple codons can code for same amino acid. But same codon can never code for multiple amino acid. So one amino acid can be coded by one codon. Or by multiple codon. From 1 to six. Example leucine can be coded by six different codons. Serine also.

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