Page 53 - Ranger SPM 2022 - Science

Science SPM SPM Model Paper
(c) State the hypothesis for this (e) The coronavirus is a new virus
experiment. that attacks the human respiratory
[1 mark] system. Besides washing our
hands with soap and water,
(d) Predict the number of bacterial what is another way to prevent
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colonies on the nutrient agar that infection by the virus?
is streaked with a hand that had [1 mark]
been washed with water only.
[1 mark]

Section B
[38 marks]

Answer all questions in this section.

5. Figure 5 shows a man who is having (d) State one other sign which shows
breathing difficulties due to choking. that the victim is choking and
needs emergency help.
[1 mark]

(e) Cardiopulmonary resuscitation
(CPR) is an emergency help
procedure. Should it be performed
on the victim in Figure 5?
Explain your answer.
[2 marks]

6. Figure 6 shows the structure of a knee
Figure 5 joint.
(a) State the cause of choking in the
victim. Muscle Bone
[1 mark]
(b) State one emergency help Synovial Cartilage
procedure that should be fluid
performed to save the life of the Y
victim. [1 mark] X Bone

(c) Explain the emergency help
technique that you stated in 5(a). Figure 6
[1 mark]

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SPM Model Paper .indd 336 3/21/22 4:04 PM