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5.1 Health and communicable disease

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Question 29
H

One bacterium contains a viral DNA sequence in its chromosome. The bacterium completes four divisions, producing 16 bacteria. No cells burst.

What is expected if the viral DNA is copied at each division?

[1]
A

all sixteen contain viral DNA and no lysis has been required

B

one bacterium contains viral DNA and fifteen contain only host DNA

C

four bacteria contain viral DNA and twelve contain only host DNA

D

all sixteen contain viral DNA and each must already have lysed

Markscheme

5.1 Health and communicable disease Questions

  1. GCSE
  2. /Biology
  3. /5.1 Health and communicable disease

43 exam-style questions on Edexcel GCSE Biology 5.1 Health and communicable disease, covering 5.1.1 Communicable and non-communicable diseases, 5.1.2 Disease susceptibility interactions, 5.1.3 Pathogens as disease-causing organisms, 5.1.4 Common infections, 5.1.5 Spread and prevention of pathogens, 5.1.6 Lifecycle of a virus, and 5.1.7 Spread and prevention of STIs. Each one has a worked solution and a mark scheme showing where the marks go.

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