Molecular genetics UE Past Papers Questions.

The codons AAA,CCC,GGG and UUU specify the amino acids lysine, proline,glycine, and phenylalanine, respectively. Which of the following DNA sequences would specify the peptide Gly-Pro-Phe-Lys if present in the coding strand?

1. 5`-CCCGGGAAATTT-3`
2. 3`-CCCGGGAAAUUU-5`
3. 3`-GGGCCCTTTAAA-3`
4. 5`-GGGCCCUUUAAA-3`
5. 5`-GGGCCCTTTAAA-3`

Answer / Solution

UNSOLVED

In tRNA, __ anticodon(s) corresponds to __ amino acid(s)

1. 1,1
2. 3,1
3. 2,2
4. 1,20
5. A and C

Answer / Solution

UNSOLVED

Imagine that a codon in the template strand of a gene has the sequence TAC. What sequence of the anticodon would decode this codon?

1. ATG
2. AUG
3. TAC
4. UAC
5. None of the above

Answer / Solution

UNSOLVED

Reported that DNA is a major component of the nucleus.

1. Alfred Harshey
2. Friedrich Meischer
3. Paul Berg
4. Maclyn MaCathy
5. Severo Ochoa

Answer / Solution

UNSOLVED

What sequence on the coding strand of DNA corresponds to the first amino acid inserted into a protein?

1. TAC
2. UAA
3. UAG
4. AUG
5. ATG

Answer / Solution

UNSOLVED