Course home

1.2 What happens in cells (and what do cells need)?

Easy Medium Hard

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24

Question 6

In a double-stranded sample of DNA, 22% of the nitrogenous bases are cytosine (C).

What are the expected percentages of the other bases in this sample?

Adenine (A) $28%28\%$ , Guanine (G) $22%22\%$ , Thymine (T) $28%28\%$

Adenine (A) $22%22\%$ , Guanine (G) $28%28\%$ , Thymine (T) $28%28\%$

Adenine (A) $28%28\%$ , Guanine (G) $28%28\%$ , Thymine (T) $22%22\%$

Adenine (A) $22%22\%$ , Guanine (G) $22%22\%$ , Thymine (T) $34%34\%$

Markscheme

1.2 What happens in cells (and what do cells need)? Questions

GCSE
Biology
1.2 What happens in cells (and what do cells need)?

72 exam-style questions on OCR GCSE Biology 1.2 What happens in cells (and what do cells need)?, covering 1.2.1 Structure of DNA, 1.2.2 Nucleotides and complementary bases, 1.2.3 Protein synthesis, 1.2.4 DNA structure and the proteins made, 1.2.5 Investigating enzymatic reactions, and 1.2.6 Mechanism of enzyme action. Each one has a worked solution and a mark scheme showing where the marks go.

Question bank