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Course: AQA A Level Biology 7402
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AQA A Level Biology 7402

1. Biological Molecules

0/102

2. Cell Structure

0/95

3. Exchange and Transport

0/98

4. Genetics, Variation and Interdependence

0/94

5. Energy Transfers In and Between Organisms (A Level only)

0/63

6. Organisms Respond to Changes in their Environments (A Level only)

0/93

7. Genetics, Populations, Evolution and Ecosystems (A Level only)

0/55

8. The Control of Gene Expression (A Level only)

0/72

9. Exam Guidance and Skills

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Quiz

2.6.1 Vaccines – Exam questions

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  • Questions count: 13
  • Passing grade: B+
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1.
What type of immunity is given by a vaccine?
Natural passive
Artificial passive
Natural active
Artificial active
2.
A vaccine contains:
Weakened or harmless forms of a pathogen or its antigens
Antibiotics
Antibodies only
Red blood cells
3.

A vaccine works by

killing pathogens directly
supplying antibiotics
stimulating production of memory cells without causing the disease
blocking antigens
4.
Which statement best describes Vaccine?
Any organism or agent that causes disease.
The protein coat surrounding a virus's genetic material.
A harmless form or fragment of a pathogen that trains the immune system in advance.
Genetic material in a protein coat; it can only reproduce inside a host cell.
5.
The chart shows flu vaccine effectiveness. Why did effectiveness fall in year 2 with the old vaccine?
Dr Dabour Hub Academy - figure 1
The vaccine expired chemically
The virus mutated its surface antigens, so old antibodies no longer fit
People stopped making antibodies
Phagocytes stopped working
6.
In a vaccine trial, why does one group receive a placebo?
To make the trial faster
To compare infection rates and show the vaccine's effect
Placebos cure disease
To increase side effects
7.
A vaccine trial used 20 people. What is the main weakness?
Too many people
Too small to detect effects and rare side effects reliably
Trials need no people
Placebos are unnecessary
8.
Which design best tests a new vaccine?
A large randomised, double-blind trial comparing vaccine with placebo
Give it to one person
Let people choose and tell them what they got
Test only on animals forever
9.
Why must vaccine trials follow people for months?
Antibodies appear only after years
To measure lasting protection and delayed side effects
It is a legal formality only
To make people ill
10.
A vaccine usually contains
antibiotics
dead or weakened pathogens or their antigens
antibodies from another person only
white blood cells
11.
This produces antigens in the body.
SAT Biology - Question 212
A
B
C
D
E
12.
In a vaccine trial, whether a person receives the vaccine is the _____.
dependent variable
antigen
independent variable
antibody
13.
A vaccine directly destroys the pathogen when injected. True or false?
True
True for flu
False
True for measles
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Part of 2. Cell Structure — see every lesson and quiz in this unit.
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