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1.1 Cell structures

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Question 19

Genetic engineering involves the insertion of a gene into a plasmid to form a recombinant vector. What is a plasmid?

A

A small circular piece of double-stranded DNA.

B

A small circular piece of single-stranded mRNA.

C

A small linear piece of double-stranded DNA.

D

A small linear piece of single-stranded mRNA.

Markscheme

1.1 Cell structures Questions

  1. GCSE
  2. /Biology
  3. /1.1 Cell structures

40 exam-style questions on OCR GCSE Biology 1.1 Cell structures, covering 1.1.1 Viewing cells with light microscopes, 1.1.2 Sub-cellular structures and functions, and 1.1.3 Electron microscopy and resolution. Each one has a worked solution and a mark scheme showing where the marks go.

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