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DNA is a condensation polymer made from monomers called nucleotides - OCR Gateway - GCSE Chemistry - Question 2 - 2019 - Paper 2
Question 2
DNA is a condensation polymer made from monomers called nucleotides. How many different nucleotides are used to make DNA molecules? A) 2 B) 3 C) 4 D) 5
Worked Solution & Example Answer:DNA is a condensation polymer made from monomers called nucleotides - OCR Gateway - GCSE Chemistry - Question 2 - 2019 - Paper 2
Step 1
How many different nucleotides are used to make DNA molecules?
Answer
DNA is composed of four different nucleotides, which include adenine (A), thymine (T), cytosine (C), and guanine (G). Each of these nucleotides consists of a phosphate group, a sugar molecule, and a nitrogenous base. Thus, the answer is C) 4.