Biology 1 revision questions

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J Bradley 2009
AQA
Biology GCSE
This revision guide for Biology 1 has 8 sections:
Human Biology
1. Coordination and Control (11.1)
2. Healthy Eating (11.2)
3. Drug Abuse (11.3)
4. Controlling Infectious Disease (11.4)
Evolution and Environment
5. Adaptations for Survival (11.5)
6. Variation (11.6)
7. Evolution (11.7)
8. How People Affect the Planet (11.8)
Each section contains:
· A revision tick sheet
· An end of unit test (Exam Style Questions)
· Summary questions
· A selection of past AQA questions
You will also find a sample exam paper for
Human Biology and one for Evolution and
the Environment.

Other pages in this set

Page 2

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Revision Summary for Biology 1 (B1.1)
"Coordination and Control"
Responding to change
· Identify the sense organs involved in responding to light, sound, changes
of position, chemicals, touch, pressure and temperature in humans.
· Describe how the nervous system works and the difference between the
functions of a sensory and a motor neurone.
· Describe how hormones are involved in control and coordination.
· Explain the differences between hormonal and nervous control.
· Explain what is meant by the term "reflex action".…read more

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Co-ordination and control
1 Oral contraceptives can stop someone becoming pregnant by ...
A preventing the ovaries from releasing an egg.
B killing eggs that have been released from the ovaries.
C killing sperms before they can reach an egg.
D preventing a fertilised egg from implanting in the uterus lining. (1)
2 A person puts their foot on a sharp object. They automatically lift their foot.…read more

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The graph below shows the concentrations of three hormones involved in the menstrual
cycle:
(a) Both FSH and LH are produced in the same gland. What is the name of this gland?
..........................................................................................................................................(1)
(b) Where in the body is the hormone oestrogen produced?
..........................................................................................................................................(1)
(c) What is the name given to the release of an egg from the ovary?
..........................................................................................................................................(1)
(d) The lining of the uterus thickens from around day 5 until some days after the egg
has been released.…read more

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Some women are unable to have children naturally. The hormone FSH can sometimes
be used to help these women have children.
(a) (i) Harriet does not produce eggs at ovulation. Explain how FSH could be the
cause of the problem.
..........................................................................................................................................
..........................................................................................................................................(1)
(ii) Explain how FSH could help Harriet to produce and release an egg.
..........................................................................................................................................
..........................................................................................................................................
..........................................................................................................................................
..........................................................................................................................................
..........................................................................................................................................
..........................................................................................................................................(4)
(b) Sharon has had an infection of her Fallopian tubes that has left them blocked.…read more

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Summary questions
Complete the following questions:
1 For the .................... of your body to work it takes ................................... and ....................
2 Your ......................... system carries fast .............................. impusles.
3 Your hormones are ......................... messengers secreted by special .................... and
carried around the body in the .................... .
4 In a .................... arc:
a) The .............................. impulse bypasses the ......................... areas of your brain.
b) The time between the ......................... and the ......................... is as short as
possible.
c) Only ......................... neurones, ......................... neurones and .........................…read more

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Past Paper Questions
1. The drawing shows an aardvark.
(a) The aardvark has receptors which are sensitive
to changes in the environment.
Name one part of the aardvark's body where
there are:
1. receptors which are sensitive to light; ...................................................................
2. receptors which help it to keep its balance; ..........................................................
3. receptors which are sensitive to chemicals. ..........................................................
(3)
(b) The aardvark feeds mainly at night. It is hunted by several predators.…read more

Page 8

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Explain why the athlete needs to take in more water on a training day.
.....................................................................................................................................
.....................................................................................................................................
.....................................................................................................................................
.....................................................................................................................................
(2)
(Total 5 marks)
3. When we touch something hot with a finger we automatically pull the finger away. The diagram
shows some parts of the nervous system involved in this reflex action.
Spinal cord
Neurone X
from skin
Neurone Y Relay neurone
to muscle
(a) What type of neurone is:
(i) neurone X; .......................................................................................................
(ii) neurone Y? .......................................................................................................…read more

Page 9

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The diagram shows how three hormones, FSH, LH and oestrogen, work together in a woman's
body.
Brain
X
1st
3 rd st nd rd
1 , 2 , 3 = sequence of events
FSH LH
Egg Oestrogen
2 nd
Developing egg
Ovary
(a) Name the part of the brain labelled X.
.....................................................................................................................................
(1)
(b) Use information from the diagram and your own knowledge to explain why some oral
contraceptive pills contain oestrogen.
.....................................................................................................................................
.....................................................................................................................................
.....................................................................................................................................
.....................................................................................................................................
.....................................................................................................................................
.....................................................................................................................................…read more

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The diagram shows the nervous pathway which is used to coordinate the knee-jerk reflex. When
the person is hit at point P, the lower leg is suddenly raised.
(a) (i) Name the type of neurone labelled A. .............................................................
(1)
(ii) On the diagram, draw arrows next to the neurones labelled A and B to show the
direction in which an impulse moves in each neurone.
(1)
(b) How is information passed across the synapse at C?
.....................................................................................................................................…read more

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