Question

question 27
which of the following is a nucleotide found in dna?
ribose + phosphate group + thymine
deoxyribose + phosphate group + cytosine
deoxyribose + phosphate group + uracil
ribose + phosphate group + uracil
question 28
where is an anticodon located?
rna molecule. the type of amino acid is determined by the anticodon sequence of the transfer rna.
mrna
dna
rrna
trna

Explanation:

Question 27

• DNA nucleotides contain deoxyribose (not ribose). So options a and d are incorrect.
• DNA has thymine and cytosine as nitrogen - containing bases, while RNA has uracil. So option c is incorrect as it has uracil. Option b (deoxyribose + phosphate group + cytosine) is correct.

• mRNA (messenger RNA) has codons.
• DNA has genetic information in the form of base sequences but not anticodons.
• rRNA (ribosomal RNA) is part of the ribosome structure.
• tRNA (transfer RNA) has an anticodon that pairs with the codon on mRNA during translation.

Answer:

B. deoxyribose + phosphate group + cytosine

Question 28