What does each nucleotide in DNA consist of?
A sugar, an amino acid and one base
A sugar, a phosphate group and two bases
A sugar, a phosphate group and one base
A phosphate group, a lipid and one base
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.