Pearson Science New South Wales 9
Chapter 7 Test – Diseases.
Name: _______________________ Class: __________
Date: _______
Score: ___________ / 30 marks
Section A—Multiple choice (10 marks)
1
2
State the general name for an organism that causes disease.
A
bacterium
B
antibody
C
pathogen
D
virus
1
Identify the missing words in the correct order.
Over nutrition is a form of __________ in which the body gets _________ nutrition.
Over nutrition can lead to _____________ such as ___________.
3
4
A
malnutrition; too much; chronic diseases; diabetes
B
chronic disease; too little; infectious diseases; diabetes
C
chronic disease; too much; diabetes; type 2 diabetes
D
malnutrition; too much; infectious diseases; diabetes
1
Identify the statement about viruses that is NOT correct.
A
Viruses are one hundred times smaller than bacteria.
B
Viruses can only grow and reproduce inside the cells of a host organism.
C
Viruses make thousands of copies of themselves inside a host cell.
D
Viruses can only be spread through coughing and sneezing.
1
Identify the statement that is INCORRECT.
A
Malaria is an infection caused by a unicellular parasitic organism called
Plasmodium.
B
Amoebic dysentery is caused by a parasitic single-celled organism.
C
Tetanus is caused by a virus called Clostridium tetani.
D
Chickenpox and shingles are caused by the same virus.
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Pearson Science New South Wales 9
Chapter 7 Test – Diseases.
5
6
7
8
Select the correct comparison of neutrophils and macrophages.
A
Macrophages and neutrophils are both part of the body’s last line of defence
against pathogens.
B
Neutrophils and macrophages both kill bacteria by consuming them.
C
Macrophages produce antibodies, while neutrophils kill bacteria by
consuming them.
D
Neutrophils are red blood cells, whereas macrophages are white blood cells.
1
Select the list that best describes the first line of defence against disease.
A
skin; mucus; vomiting; inflammation; pus formation
B
stomach acid; sneezing; white blood cells; inflammation
C
skin; vomiting; mucus; coughing; stomach acid
D
inflammation; coughing; white blood cells; pus formation
1
Identify the correct statement about the nutrients in your diet.
A
100 g of carbohydrates produce more energy than 100 g of fat.
B
Nerves and muscles require sodium if they are to work effectively.
C
Dairy products are the main source of the mineral iron.
D
Fruit and vegetables are the best source of protein.
1
Identify the missing words in the correct order.
At the site of infection, ______ in your blood consume _________. The ________
die and form yellow _______.
9
A
pathogens; neutrophils; pathogens; pus
B
neutrophils; pathogens; neutrophils; pus
C
pus; pathogens; pathogens; neutrophils
D
neutrophils; pus; pathogens; pus
1
Select the sentence that best defines a pathogen.
A
a substance that kills bacteria or prevents the growth of bacteria
B
the organism that a parasite lives in
C
a white blood cell that makes antibodies
D
an organism that causes disease
Copyright © Pearson Australia 2014 (a division of Pearson Australia Group Pty Ltduwu) ISBN 978 1 4425 6566
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Pearson Science New South Wales 9
Chapter 7 Test – Diseases.
10 Identify the sentence below that best describes an antibody.
A
a chemical made by the immune system that makes it easier for white blood
cells to destroy pathogens
B
a type of white blood cell that consumes pathogens
C
an early antibiotic
D
a chemical that causes your body to react as if you had met a pathogen
1
Section C—Thinking scientifically (8 marks)
1
2
Under the right conditions, bacteria can divide in 20 minutes. If there were
5000 bacteria at 7.40 p.m., calculate how many there will be at 8.20 p.m.
A
8000
B
9000
C
10 000
D
20 000
1
This graph shows the relative sizes of some microorganisms.
1
Identify which of the following is the smallest.
A
tuberculosis bacterium (TB)
B
cholera bacterium
C
smallpox virus
D
ebola virus
Copyright © Pearson Australia 2014 (a division of Pearson Australia Group Pty Ltduwu) ISBN 978 1 4425 6566
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Pearson Science New South Wales 9
Chapter 7 Test – Diseases.
Use the information in the table to answer questions 3 to 5.
3
Identify which of the following is a viral infection.
4
5
A
thrush
B
gastroenteritis
C
cholera
D
rabies
1
A patient visits a doctor and explains that she has been vomiting a lot and has
diarrhoea. Identify what she might have.
A
gastroenteritis
B
giardia
C
cholera
D
toxoplasmosis
1
Identify the disease that does NOT produce a fever.
A
giardia
B
rabies
C
chickenpox
D
toxoplasmosis
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Pearson Science New South Wales 9
Chapter 7 Test – Diseases.
Use the information below to answer questions 6 and 7.
Four paper discs were soaked in antibiotics. The discs were placed on a plate with a
large number of colonies of bacteria. The aim of the experiment was to test the
effectiveness of the antibiotics. After three days the plate was examined. The results
are shown below.
6
Identify the antibiotic that was most effective in killing the bacteria.
7
A
A
B
B
C
C
D
D
1
Identify the antibiotic that appeared to have no effect at all on the bacteria.
A
A
B
B
C
C
D
D
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Pearson Science New South Wales 9
Chapter 7 Test – Diseases.
8
1
Using the information in the pie charts above, calculate the percentage of deaths
caused by infectious diseases worldwide and in low-income countries, and then
identify the correct statement.
A
Infectious diseases cause twice as many deaths in low-income countries as in
the rest of the world.
B
Less than a quarter of deaths worldwide are caused by infectious diseases.
C
45% of deaths in low-income countries are caused by infectious diseases.
D
85% of deaths in the world have a cause other than an infectious disease.
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