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Course: Edexcel A Level Biology A (SNAB) 9BI0
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Edexcel A Level Biology A (SNAB) 9BI0

Topic 1 · Lifestyle, Health and Risk

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Topic 2 · Genes and Health

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Topic 3 · Voice of the Genome

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Topic 4 · Biodiversity and Natural Resources

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Topic 5 · On the Wild Side

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Topic 6 · Immunity, Infection and Forensics

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Topic 7 · Run for your Life

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Topic 8 · Grey Matter

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Quiz

6.2.9 Evolutionary Race Between Pathogens and Host – Unit exam questions

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  • Questions count: 12
  • Passing grade: B+
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1.

Antibiotic resistance arises by

bacteria choosing to become resistant
random mutation, and resistant bacteria are then selected for
the antibiotic causing mutation
viruses
2.
IGCSE Biology 15.2 Antibiotic resistance - Question 12
IGCSE Biology 15.2 Antibiotic resistance - Question 12
A
B
C
D
3.

Bacteria differ from viruses in that bacteria

contain only RNA
are cells with their own metabolism
need a host cell to reproduce
have a capsid
4.
IGCSE Biology 15.2 Antibiotic resistance - Question 9
IGCSE Biology 15.2 Antibiotic resistance - Question 9
A
B
C
D
5.
IGCSE Biology 15.2 Antibiotic resistance - Question 8
IGCSE Biology 15.2 Antibiotic resistance - Question 8
A
B
C
D
6.
Which organ is responsible for the maturation of immune system cells?
SAT Biology - Question 008
A
B
C
D
E
7.
A student explained why a plant stem bends toward a window as follows. Step 1: Light falls on one side of the stem. Step 2: Auxin moves to the lit side of the stem. Step 3: Cells on the side with more auxin elongate more. Step 4: The stem bends toward the light source. Which step is wrong?
Step 1
Step 2
Step 3
Step 4
8.
IGCSE Biology 15.2 Antibiotic resistance - Question 7
IGCSE Biology 15.2 Antibiotic resistance - Question 7
A
B
C
D
9.
Which pairing of bacteria and useful role is correct?
Decomposers — cause colds
Nitrogen-fixing bacteria — make soil nitrogen available
Gut bacteria — make capsids
Yoghurt bacteria — cause lysis
10.
IGCSE Biology 15.2 Antibiotic resistance - Question 3
IGCSE Biology 15.2 Antibiotic resistance - Question 3
A
B
C
D
11.
Memory cells allow a fast response on re-infection. True or false?
False
True
False, they slow it
True only for bacteria
12.
Viruses can contain either DNA or RNA. True or false?
False
True
False, only DNA
True only for plant viruses
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Part of Topic 6 · Immunity, Infection and Forensics — see every lesson and quiz in this unit.
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