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What does one DNA nucleotide consist of? A A phosphate and sugar backbone B A sugar, a phosphate and a base C Four bases, A, C, T and G D Two different sugars and a base - OCR Gateway - GCSE Biology - Question 1 - 2022 - Paper 1
Question 1
What does one DNA nucleotide consist of? A A phosphate and sugar backbone B A sugar, a phosphate and a base C Four bases, A, C, T and G D Two different sugars and a ... show full transcript
Worked Solution & Example Answer:What does one DNA nucleotide consist of? A A phosphate and sugar backbone B A sugar, a phosphate and a base C Four bases, A, C, T and G D Two different sugars and a base - OCR Gateway - GCSE Biology - Question 1 - 2022 - Paper 1
Step 1
What does one DNA nucleotide consist of?
Answer
A DNA nucleotide is a fundamental building block of DNA. It consists of three main components:
- A phosphate group - This is the molecule that connects the nucleotides together, forming the backbone of the DNA strand.
- A sugar - Specifically, the sugar in DNA is deoxyribose, which is integral to the structure of the nucleotide.
- A nitrogenous base - Each nucleotide contains one of four possible nitrogenous bases: adenine (A), cytosine (C), guanine (G), or thymine (T).
Given these components, the correct answer is B: A sugar, a phosphate and a base.