GCE Biology 2025 Objective — Question 46

Question 46 of 50 from the General Certificate of Education (GCE) Biology 2025 Objective paper, with the correct answer and a full explanation.

If the percentage of adenine in the DNA of a human is 32%, what will be the percentage of thymine?

A. 10%
B. 16%
C. 27%
D. 32%Correct

Explanation

In DNA, adenine (A) pairs with thymine (T). So, the percentage of adenine is always equal to the percentage of thymine. If adenine is 32%, then thymine is also 32%.

Sign up free to unlock

Score tracking
Practice history
Saved questions
Progress dashboard
Personalized sessions
Weak-topic breakdown

…and/or go further with premium services and No Ads.

Create free account

More questions from Biology 2025 Objective More Biology past papers