Tag: structure of dna and rna

Questions Related to structure of dna and rna

Multiple choice structure of dna and rna nucleic acids and polynucleotides nucleic acids and protein synthesis molecular biology biology

The enzyme which helps to cut one strand of DNA duplex to release tension of coiling of two strands is

  1. DNA ligase

  2. DNA polymerase I

  3. Topoisomerase

  4. Helicase

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Topoisomerases are enzymes that manage DNA supercoiling by cutting one or both strands of the DNA backbone to relieve torsional strain.

Multiple choice structure of dna and rna nucleic acids and polynucleotides nucleic acids and protein synthesis molecular biology biology

TACAAAGGGTTTCAACCC is the sequence of nucleotides in a DNA strand. Predict the sequence of amino acids found in a protein formed from it

  1. Proline, phenylalanine, lysine, methionine, glycine, valine

  2. Methionine, phenylalanine, glycine, valine, lysine, proline

  3. Valine, glycine, proline, lysine, phenylalanine, methionine

  4. Methionine, phenylalanine, proline, lysine, valine, glycine

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Translating the sequence TAC AA A GGG TTT CAA CCC: TAC (Methionine/Start), AAA (Phenylalanine), GGG (Proline), TTT (Lysine), CAA (Valine), CCC (Glycine). Note: The codon table mapping confirms this sequence.