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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

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Grade 6 - Unit 7: Microorganisms and food webs

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Grade 7 - Unit 1: Breathing and respiration

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Grade 7 - Unit 4: Ecosystems

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Grade 7 - Unit 7: Nutrition, health and movement

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Grade 8 - Unit 1: Cells and organisms

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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

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Quiz

Checkpoint Grade 6 Unit 4 – 4.2 Viruses

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Viruses Checkpoint Biology quiz: free practice for Cambridge Checkpoint Biology 0893. Work through this Viruses Checkpoint Biology quiz and get instant feedback on every answer. If you get stuck, review the 2.2 Viruses lesson. More practice: Cambridge Checkpoint Biology 0893 — all units. Syllabus: Cambridge Lower Secondary programme.

  • Questions count: 47
  • Passing grade: B+
  • Time limit:
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1.
Which statement best expresses the lesson objective about Viruses?
Describe what a virus is and how it replicates
The terms capsid and disease are always interchangeable
Evidence is unnecessary when studying Viruses
Every model is an exact copy of reality
2.
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
3.
Which statement correctly describes virus?
the instructions inside a virus for making copies of itself
the body's ability to resist a disease it has met before
a particle of genetic material in a protein coat that reproduces only inside a host cell
the outer covering of a virus that protects its genetic material
4.
The diagram shows the structure of an influenza virus. Which letter labels the part that lets the virus stick onto a cell and get inside it?
Dr Dabour Hub Science Diagram and Course Material
Letter A, the pegs
Letter B, the coat
Letter C, the threads
None: it has no such part
5.
Use the bar chart. Why can Noor see bacteria with her school microscope but not influenza viruses?
Dr Dabour Hub Science Diagram and Course Material
The virus is hidden inside the bacterium
Viruses are see-through, but they are bigger than bacteria
The virus is smaller than the smallest detail the microscope can show
The virus moves too fast for the microscope to follow
6.
Scientists added a few viruses to a dish of living cells and measured two things every hour. Why does the number of free viruses suddenly jump at about 8 hours, at the same time as the living cells drop?
Dr Dabour Hub Science Diagram and Course Material
The viruses split in two while floating in the liquid
Infected cells burst and die, releasing new viruses made inside them
The viruses grew larger by feeding on the liquid
The dying cells turned into viruses as they broke down
7.
Health workers recorded measles cases in four towns and the percentage of people in each town who were vaccinated. Which is the best conclusion from the bar chart?
Dr Dabour Hub Science Diagram and Course Material
Towns with more people vaccinated had fewer measles cases
The vaccine cures people who already have measles
Dalma had most cases only because more people live there
Vaccination gave people in Alba the disease
8.
In a laboratory test, the same antibiotic was added to a dish of bacteria and to a dish of viruses growing in living cells at 2 hours. What do the results show?
Dr Dabour Hub Science Diagram and Course Material
The antibiotic killed both the bacteria and the viruses
The antibiotic stopped the viruses but not the bacteria
The antibiotic had no effect on either dish
The antibiotic killed the bacteria but did not stop the viruses
9.
Rania modelled a sneeze with a spray bottle of coloured water, one spray each time, and counted droplets landing on paper 1 m away. Which is the best conclusion from her bar chart?
Dr Dabour Hub Science Diagram and Course Material
A bare hand stops more droplets than a tissue does
Covering a sneeze reduces droplets, and the mask did so the most
The cotton mask stopped every droplet from travelling
Covering a sneeze makes no real difference to droplets
10.
The table describes four things, P to S, seen by scientists. Which one is a virus, and what is the evidence?
Q, as it has no nucleus
P, as it has no cell wall
R, as it has a protein coat and no cytoplasm
S, as it has a nucleus and a wall
11.
A doctor sees four patients. Which patients could be helped by antibiotics?
Bella and Chen only
Adil and Dina only
All four of the patients
None of the four patients
12.
Jamil tested a virus against the seven characteristics of living organisms. Which row of his table contains a mistake?
The movement row
The reproduction row
The nutrition row
The respiration row
13.
The table lists four viruses and the cells they can invade. Which statement is supported by the table?
Some viruses infect plant cells rather than animal cells
Every virus can infect every kind of cell
Viruses infect only human cells
Tobacco mosaic virus causes measles in people
14.
Farah was given a measles vaccine on day 0. On day 60 she met the real measles virus but did not become ill. Why was the rise in antibodies after day 60 so fast and large?
The vaccine made her ill again on day 60
The real virus carried antibodies into her blood
Her body remembered the virus and quickly made antibodies
She was given antibiotics that made antibodies on day 60
15.
Dr Salma does not give Yusuf antibiotics for his influenza. Why?
Influenza is too mild an illness to need any treatment
Antibiotics would make the influenza viruses grow bigger
Influenza is caused by a virus, and antibiotics only kill bacteria
Influenza is caused by bacteria that are too small to reach
16.
Why does a person infected with a cold virus feel ill?
The viruses eat the food in the person's stomach
Many of their cells are destroyed as new viruses burst out
The viruses release poisonous gas as they respire
The viruses grow so large that they block the blood
17.
Which argument gives the strongest reason for classing viruses as non-living?
They do not respire, feed, grow or reproduce without a host cell
They are too small to see with a school microscope
They cause diseases, and living things never do that
They carry coded instructions for making more viruses
18.
A new medicine sticks to the spike proteins of SARS-CoV-2 and covers them up. What is the most likely effect?
The virus loses its RNA and all its instructions
The virus changes into a harmless bacterium
The virus starts to respire and then dies
The virus cannot attach to and enter cells
19.
How does a vaccine protect a person against a viral disease?
It kills all viruses already in the blood straight away
It is an antibiotic that stays in the body for years
A harmless form of the virus makes the body produce antibodies
It gives the person the full disease so they get over it
20.
Why can a tobacco farmer handle leaves infected with tobacco mosaic virus without catching the disease himself?
The virus is too large to enter the human body
His body has antibiotics that kill the virus
The virus only infects people through the air
The virus infects only plant cells, not human cells
21.
A school wants a plan to reduce the spread of flu this winter. Which plan would work best?
Give every student antibiotics at the start of winter
Offer vaccines, teach hand washing and ask ill students to stay home
Close all windows so that viruses cannot get into rooms
Only clean the classrooms once at the end of winter
22.
Each option links a part of a virus to its job. Which pairing is correct?
RNA – sticks the virus onto a cell
Spike proteins – carry instructions for new viruses
Cell membrane – controls what enters the virus
Protein coat – protects the genetic material inside
23.
Mrs Karimi listed diseases with a fact about each. Which pairing is correct?
Tobacco mosaic virus – infects plant cells
Measles – caused by bacteria, so antibiotics cure it
Covid-19 – caused by an influenza H3N2 virus
Common cold – can only be seen with a light microscope
24.
Each option links a way of fighting viral disease with how it works. Which pairing is correct?
Hand washing – kills viruses inside the body cells
Antibiotics – destroy viruses in the blood
Vaccination – body makes antibodies before any infection
Isolation – makes the ill person immune
25.
Each option links a key term to a meaning. Which pairing is correct?
Replicate – to break down food and release energy
Electron microscope – shows objects as small as viruses
Pathogen – a harmless form used in a vaccine
Host cell – the outer protein layer of a virus
26.
Which term is described as: the passing of a virus from one person to another?
virus
transmission
host
protein coat
27.
Match the term to its correct meaning: genetic material
the passing of a virus from one person to another
the instructions inside a virus for making copies of itself
giving a harmless form of a pathogen so the body can build immunity
the body's ability to resist a disease it has met before
28.
Which term is described as: the instructions inside a virus for making copies of itself?
genetic material
virus
host
protein coat
29.
The flow chart shows how a virus makes copies of itself, but step 2 is missing. The missing step 2 is: _____.
Dr Dabour Hub Science Diagram and Course Material
the host cell divides into two cells
the virus grows to its full size
the virus respires to release energy
the virus gets inside the cell
30.
Use the table. A tobacco leaf cell is about _____ longer than a tobacco mosaic virus particle.
200 times
20 times
2 000 times
59 700 times
31.
The small projections on the coat of SARS-CoV-2 that let it stick onto a cell are called _____.
cell membranes
antibiotics
spike proteins
chloroplasts
32.
A microorganism that causes disease, such as a measles virus, is called a _____.
antibody
pathogen
antibiotic
host cell
33.
Viruses are far smaller than bacteria and need an electron microscope. - True or false?
True
False
34.
A virus is genetic material inside a protein coat. - True or false?
True
False
35.
If enough people are vaccinated, the disease finds it hard to spread. - True or false?
True
False
36.
A virus has cytoplasm, but it has no nucleus. True or false?
False – it has neither cytoplasm nor a nucleus
True – like a bacterium it has cytoplasm
True, but only when inside a cell
False – it has both of them
37.
A virus floating in the air can make copies of itself as long as there is oxygen. True or false?
True – it uses the oxygen to respire
True, but only in warm air
False – it can only replicate inside a living cell
False – it needs carbon dioxide instead
38.
New viruses leave a host cell by bursting out of it, which usually kills the cell. True or false?
False – the cell stays healthy
False – viruses leave by dividing in two
True, but only in plant cells
True – the cell bursts and dies
39.
Most biologists class viruses as non-living, even though viruses carry genetic instructions in their RNA. True or false?
False – all biologists say they are alive
True – they show only one characteristic
False – viruses have no genetic instructions
True, but only when they are dry
40.
A vaccine works by giving a person the full disease in a mild form so their body learns to fight it. True or false?
False – it contains a harmless form of the pathogen
True – people must catch the disease to be immune
True, but only for measles vaccines
False – a vaccine contains antibiotics
41.
Influenza H3N2 viruses can invade the cells of birds as well as the cells of humans. True or false?
False – they infect only human cells
False – they infect only plant cells
True – they infect birds and mammals
True, but only cells of chickens
42.
Coughing into a tissue and throwing it away reduces the spread of a cold, because the droplets carry viruses. True or false?
False – colds spread only by touching
True – it traps droplets that carry viruses
False – tissues kill viruses in the body
True, but only if antibiotics are taken
43.
Because a virus can reproduce, it must be classed as a living organism. True or false?
True – reproduction alone proves it is alive
True, but only when it is in a cell
False – viruses cannot reproduce at all
False – it shows just one characteristic, with help
44.
Some antiviral drugs exist, so antibiotics can also be used to cure viral diseases. True or false?
False – antibiotics only work on bacteria
True – antibiotics and antivirals are the same
True, but only for the common cold
False – no medicines at all act on viruses
45.
Using the ×400 setting on a school light microscope, Ali will be able to see the structure of a flu virus. True or false?
True – ×400 is strong enough
True, but only if the virus is stained
False – an electron microscope is needed
False – viruses cannot be seen at all
46.
To grow viruses in a laboratory, scientists must give them living cells to infect. True or false?
False – a dish of sugar solution is enough
True – viruses replicate only in living cells
False – viruses grow on dry glass
True, but only dead cells will work
47.
SARS-CoV-2 appeared in 2019, and scientists think it developed in a wild animal before spreading to humans. True or false?
False – it first appeared in 1968
False – it developed in tobacco plants
True, but it infects only animals
True – it probably came from a wild animal
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Part of Grade 6 - Unit 4: Living organisms and classification — see every lesson and quiz in this unit.
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