0653.B10.1.01 — Describe a pathogen as a disease-causing organism: past paper questions
Real questions on 0653.b10.1.01 — describe a pathogen as a disease-causing organism
The newest 8 of 8 written questions. Open one to see it on the real paper.
- 0653/01 · Specimen 2025 · Q10[1]
Which word best describes a disease-causing organism?
See it on the paper → - 0653/32 · February/March 2025 · Q3b(i)[1]
Describe what is meant by pathogen.
See it on the paper → - 0653/32 · February/March 2025 · Q3b(iii)[1]
Blood is one of the body’s defences against pathogens. State one of the body’s other defences against pathogens.
See it on the paper → - 0653/33 · May/June 2024 · Q1c(i)[2]
Circle the words in bold that make this definition of hormones correct. Hormones are chemical / electrical substances produced by a gland / vacuole. They are carried in the blood and alter the activity of a specific excretion / target organ.
See it on the paper → - 0653/33 · May/June 2024 · Q1c(ii)[2]
A patient is given an injection of the hormone adrenaline. The doctor measures the patient’s pulse rate before and after the injection. Table 1.1 shows the results. Table 1.1 pulse rate before injection / beats per minute pulse rate after injection / beats per minute 70 91 Calculate the percentage increase in pulse rat...
See it on the paper → - 0653/33 · May/June 2024 · Q1c(iii)[1]
State one other effect of adrenaline on the body.
See it on the paper → - 0653/61 · October/November 2023 · Q2a[1]
When magnesium ribbon is added to dilute hydrochloric acid, the mixture fizzes and makes hydrogen gas. The magnesium ribbon stays on the surface of the acid during the reaction. The reaction is complete when all the magnesium ribbon disappears and the fizzing stops. State the test used to confirm the presence of hydrog...
See it on the paper → - 0653/32 · February/March 2022 · Q4b[2]
Bacteria are single-celled organisms. Some bacteria infect the body causing harm. Fig. 4.1 shows a diagram of what happens when a cut in the skin becomes infected by bacteria. infected area white blood cells skin bacteria under the skin Fig. 4.1 Suggest two reasons why the number of white blood cells increases at the i...
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What examiners said
The definition of a pathogen in this syllabus states that it is an organism that causes disease in the body. Specific microorganisms, e.g., bacteria, were acceptable. Responses stating that a pathogen causes disease without mentioning it being an organism were not accepted. Other unaccepted responses stated that a pathogen is a substance or a factor.
— Examiner report, February/March 2025, 0653/32 Q3(b)(i) (Cambridge)
There were several correct answers possible for this question. The most common correct answers given were skin and nose hairs. Many candidates stated either white blood cells or antibodies. These answers were not accepted because the question asked for a defence other than blood.
— Examiner report, February/March 2025, 0653/32 Q3(b)(iii) (Cambridge)
Almost all candidates knew the test for hydrogen gas. A few incorrectly stated that a glowing splint, rather than a lighted splint, is used as the test.
— Examiner report, October/November 2023, 0653/61 Q2(a) (Cambridge)
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