Curriculum
Course: Checkpoint Biology 0893
time left:
:
:
Login

Curriculum

Checkpoint Biology 0893

Grade 6 - Unit 1: Cells and organisms

0/11 Dr Dabour Hub Science Diagram and Course Material

Grade 6 - Unit 4: Living organisms and classification

0/12 Dr Dabour Hub Science Diagram and Course Material

Grade 6 - Unit 7: Microorganisms and food webs

0/11 Dr Dabour Hub Science Diagram and Course Material

Grade 7 - Unit 1: Breathing and respiration

0/12 Dr Dabour Hub Science Diagram and Course Material

Grade 7 - Unit 4: Ecosystems

0/10 Dr Dabour Hub Science Diagram and Course Material

Grade 7 - Unit 7: Nutrition, health and movement

0/10 Dr Dabour Hub Science Diagram and Course Material

Grade 8 - Unit 1: Cells and organisms

0/10 Dr Dabour Hub Science Diagram and Course Material

Grade 8 - Unit 4: Living organisms and classification

0/12 Dr Dabour Hub Science Diagram and Course Material

Grade 8 - Unit 7: Microorganisms and food webs

0/10 Dr Dabour Hub Science Diagram and Course Material
Quiz

Checkpoint Grade 8 Unit 4 – 4.2 Viruses

Submit quiz
Once you submit, you will no longer be able to change your answers. Are you sure you want to submit the quiz?
Cancel Submit

Viruses Checkpoint Biology quiz set 2: free practice for Cambridge Checkpoint Biology 0893. Work through this Viruses Checkpoint Biology quiz set 2 and get instant feedback on every answer. If you get stuck, review the 8.2 Viruses lesson. More practice: Cambridge Checkpoint Biology 0893 — all units. Syllabus: Cambridge Lower Secondary programme.

  • Questions count: 50
  • Passing grade: B+
  • Time limit:
Start Quiz
1.
Which statement correctly describes virus?
the protein coat of a virus
a cell used by a virus to replicate
make copies
a non-cellular infectious particle
2.
Which statement correctly describes capsid?
a non-cellular infectious particle
make copies
the protein coat of a virus
a cell used by a virus to replicate
3.
Which statement correctly describes host cell?
a non-cellular infectious particle
make copies
a cell used by a virus to replicate
the protein coat of a virus
4.
Which statement correctly describes replicate?
a non-cellular infectious particle
a cell used by a virus to replicate
make copies
the protein coat of a virus
5.
Which definition should be paired with virus?
make copies
a non-cellular infectious particle
the protein coat of a virus
a cell used by a virus to replicate
6.
Which of these is the FIRST step in the correct order?
genetic material enters
new viruses are released
virus attaches to a host cell
the host makes virus parts
7.
Which step comes immediately after "genetic material enters"?
virus attaches to a host cell
new viruses are released
the host makes virus parts
8.
Which practical work belongs to Viruses?
Use reproductive evidence and observable features to compare organisms
Follow paired-choice questions accurately and check identification against observable features
Apply the seven characteristics to living, non-living and once-living examples
Use evidence to discuss why viruses sit at the boundary between living and non-living
9.
Hillcrest boarding school began isolating every student with flu at the end of day 6. Using the chart, why did the number of new cases keep rising until day 8?
Dr Dabour Hub Science Diagram and Course Material
Isolating students made the flu virus reproduce faster in the school
The virus had already infected every student in the school by day 6
Students infected before isolation took a day or two to show symptoms
Isolation only works if the ill students are also given antibiotics
10.
The five drawings P to T show one host cell during a virus infection, but they are in the wrong order. Which order is correct?
Dr Dabour Hub Science Diagram and Course Material
T, Q, S, R, P
T, S, Q, R, P
Q, T, R, S, P
T, Q, R, S, P
11.
Maryam drew virus particles from an electron microscope image and added the scale shown. Using the scale, what is the diameter of one virus particle?
Dr Dabour Hub Science Diagram and Course Material
About 60 nm
About 120 nm
About 12 nm
About 1200 nm
12.
Leila repeated a famous experiment, shown in the diagram. What does her result show about the cause of tobacco mosaic disease?
Dr Dabour Hub Science Diagram and Course Material
It is caused by bacteria that squeezed through the filter holes
It is not caused by a pathogen, because the filter removed all pathogens
It is caused by leaf cells from the sick plant growing in the healthy plant
It is caused by something even smaller than bacteria
13.
Omar rubbed a gel that glows under UV light onto volunteers' hands to model viruses, then tested five ways of cleaning. Which conclusion does his bar chart support?
Dr Dabour Hub Science Diagram and Course Material
Soap and water for 20 s removed the most gel
Rinsing with water alone removed almost all of the gel
Alcohol gel was the best method that Omar tested
When soap is used, washing time makes no difference
14.
The diagram traces a measles outbreak that started with Hana. Not counting Hana, how many people caught measles in this outbreak?
Dr Dabour Hub Science Diagram and Course Material
Twelve people caught it
Five people caught it
Eleven people caught it
Seven people caught it
15.
In 2006 a newspaper wrote: "Measles has gone for good, so children no longer need the vaccine." Use the graph to evaluate this claim.
Dr Dabour Hub Science Diagram and Course Material
Right: cases stayed below 100 a year from 2003 onwards
Wrong: when fewer children were vaccinated after 2006, cases rose again
Right: cases were already falling before the vaccine was introduced
Wrong: cases were highest in 2010, when the most children were vaccinated
16.
A school science club tested how long a cold virus stays able to infect people on different surfaces at room temperature. Which conclusion is supported by the table?
Viruses multiply on plastic, so their numbers increase over 72 hours
Cardboard is the surface where viruses last longest
Viruses on plastic handles could still infect someone after two days
Viruses last longer on stainless steel than on plastic
17.
Sixty adults with colds were split into three equal groups. The table shows how long each group took to recover. What is the best conclusion about antibiotics?
They did not help: all three groups recovered in about 7 days
They shortened colds by a day compared with taking no tablet
Sugar tablets cured colds best because 7.0 days is the lowest mean
They made colds last longer, so they must strengthen the virus
18.
Ben diluted sap from a tobacco plant with mosaic virus and rubbed each dilution onto three healthy leaves. Each virus that infects a cell makes one dead spot. Which result is anomalous?
The 425 spots on leaf 3 of undiluted sap
The 38 spots on leaf 3 at 1 in 100
The 0 spots on leaf 1 at 1 in 1000
The 47 spots on leaf 2 at 1 in 10
19.
After a wedding, 41 of the 105 guests became ill with norovirus, a virus spread in food. Which food was most likely the source?
The rice: more guests who ate it fell ill than for any other food
The chicken: 11 guests who did not eat it still became ill
The salad: most who ate it fell ill, but few who skipped it did
The fruit dessert: it was eaten by more than half of the guests
20.
A hospital put hand-washing stations in a ward at the start of April. The manager says the stations definitely caused the fall in viral infections. Which is the best evaluation?
The claim is proved, because every month after April is lower
Hand washing cannot affect viruses, so the fall must be chance
The data show infections rose after the stations were installed
The data support the idea, but spring may have cut infections too
21.
Assume one virus particle infects one cell and every virus released goes on to infect a new cell. After 24 hours, which virus would have produced the most particles?
Virus Z, as it completes four cycles
Virus Y, as each cell releases the most
Virus X, as it has the middle cycle time
All three would make the same number
22.
Which feature do viruses share with living organisms?
They respire to release energy from glucose
They contain genetic material carrying instructions
They are built from cells surrounded by a membrane
They take in nutrients and grow bigger over time
23.
Leo wants to find out whether a virus can multiply in cells that have been killed by heating. Which plan is best?
Add viruses to heat-killed cells only and see whether the cells look damaged
Add viruses to living cells at room temperature and to dead cells in a fridge
Add equal numbers of viruses to living and heat-killed cells; count viruses after 24 h
Add antibiotics to the dead cells so that bacteria cannot grow; then count cells
24.
Hamza had a viral sore throat and got better after five days without any medicine. What most likely happened in his body?
The viruses died of old age after reaching full size
The virus ran out of oxygen to respire inside his cells
His body made antibiotics that killed the virus particles
His immune system made antibodies that destroyed the virus
25.
Mr Osei finds tobacco mosaic virus on some plants in one of his three greenhouses. Which action is best for stopping it spreading to the other greenhouses?
Remove the infected plants and wash hands and tools after touching them
Spray every plant with an antibiotic to kill the virus on the leaves
Water all plants more so they grow faster than the virus can spread
Warm the greenhouse so the virus uses up its food stores more quickly
26.
Rashid says, "A virus is just a very small bacterium." Which evidence best shows that he is wrong?
A virus causes disease, but bacteria never cause disease
A virus has no cytoplasm or membrane, so it is not a cell
A bacterium has a nucleus, but a virus does not have one
A virus is larger than a bacterium, so they cannot be the same
27.
Scientists have made many antibiotics but far fewer antiviral drugs. Which is the best explanation?
Viruses are alive, so they are harder to kill than non-living bacteria
Viruses are too small to cause serious diseases, so drugs are rarely needed
Viruses work inside our own cells, so drugs that harm them may harm the cells
Viruses have thick cell walls that stop medicines from reaching their DNA
28.
Each option links a route of spread to an example. Which pairing is correct?
Droplets – drinking water from a dirty well
Contaminated surface – kissing a family member
Body fluids – touching a shared computer keyboard
Animal vector – a mosquito carrying a virus between people
29.
Each option pairs a common mistake about viruses with a correction. Which pairing is correct?
"Viruses reproduce by dividing" – they are copied inside host cells
"Antibiotics kill viruses" – they kill viruses only in large doses
"A vaccine gives you the disease" – it gives a mild version of the illness
"Viruses are tiny bacteria" – they are bacteria without a nucleus
30.
Each option links a stage of virus replication to what happens. Which pairing is correct?
Attachment – the host cell bursts open and dies
Release – the virus sticks to the cell membrane
Assembly – new coats and genetic material join into particles
Injection – the host cell builds new protein coats
31.
Mrs Adeyemi listed ways to reduce viral disease and the route of spread each one blocks. Which pairing is correct?
Hand washing – stops droplets in the air
Mosquito nets – stop an animal vector
Face masks – clean viruses out of water
Boiling water – stops viruses in coughs
32.
Which term is described as: a non-cellular infectious particle?
capsid
replicate
virus
host cell
33.
Which term is described as: the protein coat of a virus?
virus
host cell
replicate
capsid
34.
Which term is described as: a cell used by a virus to replicate?
virus
replicate
host cell
capsid
35.
Which term is described as: make copies?
virus
host cell
replicate
capsid
36.
In a flu vaccine trial, 2000 people had the vaccine and 2000 had a placebo injection. Using the table, people who had the vaccine were _____ as likely to catch flu as the placebo group.
one quarter
eight times
about half
one eighth
37.
The genetic material of a virus carries the instructions that the host cell follows to build new _____.
cell walls
antibodies
virus particles
mitochondria
38.
In Dr Chen's trial, the group given a dummy injection with no vaccine in it acts as the _____.
control group
independent variable
dependent variable
anomalous result
39.
Staying at home while ill with flu reduces spread because it cuts the number of _____.
bacteria in the house
people the virus can reach
antibodies the person makes
memory cells in the body
40.
A virus uses its own mitochondria to release the energy it needs to build new virus particles. True or false?
True – every virus contains a few mitochondria
True, but only when the virus is inside a cell
False – viruses get their energy from sunlight
False – the host cell supplies the energy and materials
41.
Omar's glowing hand gel behaves exactly like real viruses on hands, so his results show exactly how many viruses each washing method removes. True or false?
False – it only models how well washing removes material
True – the gel particles are the same size as viruses
True, as long as the UV lamp is bright enough
False – gel is removed less easily than viruses are
42.
A virus particle grows bigger while it floats in the air until it is large enough to enter a cell. True or false?
True – it takes in water from the air to grow
False – viruses do not grow; they are made full size inside cells
True, but only when the air is warm and damp
False – it grows only while it is on a surface
43.
An infected host cell uses its own materials to build the protein coats of the new viruses. True or false?
True – the host cell builds both coats and genetic material
False – the virus brings spare coats with it
False – coats are made outside the cell after bursting
True, but only in plant cells, not animal cells
44.
Measles, influenza and HIV are all caused by viruses, so one vaccine against measles also protects a person from the other two. True or false?
True – all viruses have the same protein coat
True, but only if two doses are given
False – each vaccine trains the body against one pathogen
False – vaccines only protect against bacteria
45.
Some viruses are carried from one person to another by animals such as mosquitoes. True or false?
False – viruses spread only in coughs and sneezes
False – animals cannot carry human viruses at all
True, but only in countries with no winter
True – mosquitoes can act as animal vectors
46.
Viruses have no nucleus, so they should be classed as prokaryotic cells, like bacteria. True or false?
True – anything without a nucleus is prokaryotic
False – viruses are not cells of any kind
True, but only viruses that contain DNA
False – viruses are eukaryotic cells
47.
A gardener can spread tobacco mosaic virus by touching an infected leaf and then touching a healthy plant. True or false?
False – the virus spreads only through the soil
False – plant viruses spread only by insects
True – the virus spreads by contact
True, but only if the gardener has a cold
48.
If a scientist found a new particle that respired and grew on its own outside cells, it would not fit the usual description of a virus. True or false?
True – viruses cannot respire or grow on their own
False – all viruses respire when outside cells
False – viruses grow only when they are outside cells
True, but only if the particle also had a coat
49.
In a flu vaccine trial, the vaccine group and the placebo group should be similar in age and health. True or false?
False – the groups should differ as much as possible
False – only the number in each group matters
True, but only when the placebo group is larger
True – this helps make the comparison fair
50.
The genetic material inside a virus can be either DNA or RNA. True or false?
False – every virus contains only DNA
True – some viruses have DNA, others RNA
False – viruses carry no genetic material
True, but only viruses that infect plants
  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10
  • 11
  • 12
  • 13
  • 14
  • 15
  • 16
  • 17
  • 18
  • 19
  • 20
  • 21
  • 22
  • 23
  • 24
  • 25
  • 26
  • 27
  • 28
  • 29
  • 30
  • 31
  • 32
  • 33
  • 34
  • 35
  • 36
  • 37
  • 38
  • 39
  • 40
  • 41
  • 42
  • 43
  • 44
  • 45
  • 46
  • 47
  • 48
  • 49
  • 50
Part of Grade 8 - Unit 4: Living organisms and classification — see every lesson and quiz in this unit.
Accepted payment methods