Skip to content

Course home

1.1 Cell structure

1.1 Cell structure

EasyMediumHard
123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081
Question 2
H

The figure shows how the number of bacteria in a flask of nutrient broth changed over 10 hours.

Figure: The number of bacteria in a flask of nutrient broth over 10 hours

image

a.

Use the figure. Calculate the mean division time of this bacterium between 1 hour and 5 hours.

[3]
b.

The curve becomes horizontal after 6 hours.

Explain why.

[2]
c.

Predict the number of bacteria in the flask at 7 hours. Give a reason for your answer.

[2]
Markscheme

1.1 Cell structure Questions

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

139 exam-style questions on AQA GCSE Biology 1.1 Cell structure, covering 1.1.1 Eukaryotes and prokaryotes, 1.1.2 Animal and plant cells, 1.1.3 Cell specialisation, 1.1.4 Cell differentiation, 1.1.5 Microscopy, and 1.1.6 Culturing microorganisms. Each one has a worked solution and a mark scheme showing where the marks go.

Question bank