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

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Question 33

Which statement about the structure of DNA is correct?

A

DNA is composed of a single strand of nucleotides.

B

Complementary base pairs in DNA are joined by hydrogen bonds.

C

The DNA backbone is made up of alternating phosphate and nitrogenous base groups.

D

DNA nucleotides contain the sugar ribose.

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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.

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