Page 30 - Ranger SPM 2022 - Science

Science SPM Chapter 10 Chemicals in Medicine and Health
(c) Figure 2 shows a remedy that State two negative effects
is commonly used in traditional of excessive free radicals on
medicine. health. [2 marks]
(b) Figure 3.2 shows the factors that
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contribute to the formation of free
radicals in the human body.

Factors that Contribute to the
Formation of Free Radicals
Figure 2
HOTS Your neighbour decides to use the
HOTS
remedy to treat a family member Air pollution Toxic waste
who shows symptoms of serious
and acute asthma.
Form 4
Do you agree with his decision? Smoking
Justify your answer. [2 marks]
Figure 3.2
Study the information in Figure
Section C 3.2 and build a concept on free
radicals. [4 marks]
3. (a) Figure 3.1 shows the effect of
free radicals on a healthy body
cell. Our body cells can be (c) Figure 3.3 shows an example
damaged, which subsequently of foods taken by a person who
wishes to reduce the effect of
causes various diseases such
as premature aging. aging.

Free radicals snatch
electrons from healthy
body cells

Free radical
Figure 3.3
HOTS In your opinion, are the foods
HOTS
Healthy suitable for the person to achieve
body cell her objective? Justify your
Figure 3.1 answer. [4 marks]

Chapter 10 Answers

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F4 Chapter 10.indd 148 3/21/22 3:24 PM