Skip to content

Course home

Question bank·1.2 What happens in cells (and what do cells need)?
Sign up

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

EasyMediumHard
12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152535455565758596061626364656667686970717273
Question 62

An analysis of a double-stranded DNA plasmid from a halophilic archaeon reveals that cytosine accounts for 23% of the total nitrogenous bases. What percentage of the bases in this plasmid are adenine?

A

23%23\%23%

B

54%54\%54%

C

27%27\%27%

D

46%46\%46%

Markscheme

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

  1. GCSE
  2. /Biology
  3. /1.2 What happens in cells (and what do cells need)?

184 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.

More questions