Page 23 - Ranger SPM 2022 - Science

Science SPM Chapter 10 Chemicals in Medicine and Health
The Effects of Misuse of Medicine
1. Figure 10.4 shows the causes and effects of the misuse of medicines.

Drug abuse and Addiction to medications
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overdependence on drugs

Not taking medications The illness is not cured, but
according to prescribed other health problems arise
dosage and times instead

Not taking medications Serious side effects such as
according to the age allergy, nausea, headaches, Form 4
group specified fever and fainting

Create new resistant strains
Overusing antibiotics / not of bacteria, making antibiotics
following prescription less effective in fighting the
disease
Figure 10.4 Causes and effects of the misuse of medicines

10.2 Free Radicals Quiz

Can fever medication be used to
Definition of Free Radicals relieve a cough?
1. A free radical is an atom or molecule that is lacking one electron, making it
unstable or highly reactive.
2. A free radical tends to attack another atom or molecule by taking an electron
from the atom or molecule.
3. Oxidation is a chemical process in which a reactant loses electrons.
4. Figure 10.5 shows the factors that contribute to the formation of free radicals
in our bodies.

Internal factors • Metabolism
• Inflammation
Production of
free radicals
• Ultraviolet rays
• Air pollution
External factors
• Cigarette smoke
• Ionising rays
• Toxic waste

Figure 10.5 Contributing factors to free radicals production in our bodies

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F4 Chapter 10.indd 141 3/21/22 3:24 PM