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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.…

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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…

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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…

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3 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…

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4 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…

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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…

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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; ..........................................................…

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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…

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4. 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…

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5. 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…

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