Molecular genetics UE Past Papers Questions.

A polypeptide found in the cytopllasm of a celll contains 7 amino acids. How many nucleotides would be required in the mRNA for this polypeptide to be translated ?

1. 14
2. 21
3. 24
4. 42
5. 48

Answer / Solution

UNSOLVED

If the nucleotide sequence of an anticodon was AUC, then the DNA triplet on antisense strand corresponding to it would be:

1. ATC
2. TAG
3. AUC
4. UAG

Answer / Solution

UNSOLVED

Use the following information to answer the question: 1 Uracil bonds with adenine. 2 Complementary bonding between codon and anticodon. 3 DNA unzips. 4. Amino acids form peptide bonds. 5. tRNA carries amino acids to mRNA.

The correct order of events required for protein synthesis is

1. 1,2,3,4,5
2. 2,1,3,4,5
3. 2,1,3,5,4
4. 2,1,4,5,3

Answer / Solution

UNSOLVED

Which of these DNA fragments will have a lower melting temperature?

1. GCATTGACCGGAGGGACT
2. GGATTTCAATTACTTAAT
3. None CGTAACTGGCCTCCCTGA CCTAAAGTTAATDAATTA
4. Both A and B

Answer / Solution

UNSOLVED

The most common post-translational methylation of proteins occurs on nitrogens and oxygen of Lysine residues.

Answer / Solution

UNSOLVED