What is a pathogen?
A transmissible disease
A phagocyte that engulfs bacteria
A disease-causing organism
A bacterial cell
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What is a pathogen?
A transmissible disease
A phagocyte that engulfs bacteria
A disease-causing organism
A bacterial cell
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Which body defence listed below acts as a chemical barrier?
Mucus lining the airways
Antibody production
Hairs in the nose
Phagocytosis
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Which of the options below is an example of a transmissible disease?
Obesity
Tooth decay
Cholera
Rickets
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Which action can prevent the spread of the human immunodeficiency virus (HIV)?
keeping healthy by taking regular exerciseÂ
avoiding contact with saliva
breast-feeding babies
using condoms during sexual intercourse
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The human body has a number of barriers to prevent infection by pathogens, some of which are listed below.
Which of these are examples of mechanical barriers?
1 and 3
1, 2 and 4
2 and 4
1, 3 and 5
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Which of the diseases listed below are not caused by pathogens?
2 only
1 and 4
2 and 3
2, 3 and 4
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Which of the following diseases can be transmitted by contact with contaminated surfaces?
Athletes foot and malaria
Salmonella and typhoid
Influenza and dengue fever
Salmonella and athletes foot
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Which of the following can occur with a cholera infection?
1 and 4
1, 2 and 4
3 and 4
All 4
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What are the effects of drinking a large quantity of alcohol on the human body?Â
 | effects on the body | ||
acts as a | reaction time | damages the | |
A | depressant | decreases | kidney |
B | depressant | increases | liver |
C | stimulant | increases | kidney |
D | stimulant | decreases | liver |
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What are the roles of the female mosquito and the malarial pathogen in the spread of malaria?
 | female mosquito | malarial pathogen |
A | parasite | vector |
B | parasite | parasite |
C | vector | parasite |
D | vector | vector |
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Which words all describe the organism that causes malaria?Â
microscopic, parasite, sexually transmitted
microscopic, parasite, pathogenÂ
mosquito, pathogen, vector
parasite, sexually transmitted, vector
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