3) Let\'s do the numbers: (This question is worth 10 points total. All parts are

Question

3) Let's do the numbers: (This question is worth 10 points total. All parts are 1 point each except for part h, worth 3 points) a. How many different nucleotides are used in RNA synthesis? Name them. b. How many different nucleotides are used in DNA synthesis? Name them. c. How many standard amino acids are found in proteins? d. How many nucleotides are needed to code for a single amino acid? e. How many different codons are there in the genetic code? f. How many codons code for an amino acid? g. Rat liver glucokinase is 465 amino acids long. What would be the minimum number of nucleotides required to encode this glucokinase? The primary (or precursor) mRNA transcript of glucokinase isolated from rat liver cells is much longer than your answer in Q.3g. Suggest 4 possible reasons why this is so. h.

Explanation / Answer

Ans 3

DNA and RNA are the genetic materials that contain the heredity information. DNA codes for RNA , which codes for proteins.

The correct answers here are :

a) 4

names : adenine , guanine , cytosine , uracil

b) 4

names : adenine . guanine , cytosine , thymine

c) 20

d) 3

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