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Course: HIA International — Grade 8
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HIA International — Grade 8

Unit 1: Photosynthesis and the carbon cycle

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Unit 2: Properties of materials

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Unit 3: Forces and energy

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Unit 4: Maintaining life

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Unit 5: Reactivity

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Unit 6: Sound and space

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Unit 7: Genes and inheritance

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Unit 8: Rates of reaction

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Unit 9: Electricity

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Quiz

Microorganisms – Quiz

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Microorganisms HIA Science quiz set 2: free practice for HIA International. Work through this Microorganisms HIA Science quiz set 2 and get instant feedback on every answer. If you get stuck, review the 25.1 Microorganisms – Notes lesson. More practice: HIA International — all units. Syllabus: Cambridge Lower Secondary programme.

  • Questions count: 50
  • Passing grade: A-
  • Time limit:
Start Quiz
1.
Which statement correctly describes agar jelly?
an organism too small to see clearly without magnification
single-celled microorganisms
organisms including yeasts and moulds
a nutrient surface used to grow microorganisms
2.
Which statement correctly describes microorganism?
single-celled microorganisms
organisms including yeasts and moulds
a nutrient surface used to grow microorganisms
an organism too small to see clearly without magnification
3.
Which statement correctly describes pathogen?
a visible patch of millions of microorganisms grown from one cell
the splitting of a bacterial cell into two identical cells
a microorganism that causes disease
a chemical used on surfaces to kill microorganisms
4.
Which statement correctly describes bacteria?
an organism too small to see clearly without magnification
organisms including yeasts and moulds
a nutrient surface used to grow microorganisms
single-celled microorganisms
5.
Which statement correctly describes bacterial cell?
a visible patch of millions of microorganisms grown from one cell
a cell with a cell wall, membrane and cytoplasm but no true nucleus
the splitting of a bacterial cell into two identical cells
the temperature at which a microorganism grows fastest
6.
Match the term to its correct meaning: binary fission
keeping a culture at a controlled temperature so it can grow
the splitting of a bacterial cell into two identical cells
a visible patch of millions of microorganisms grown from one cell
the set of methods used to stop unwanted microorganisms entering a culture
7.
Match the term to its correct meaning: disinfectant
the set of methods used to stop unwanted microorganisms entering a culture
a microorganism that causes disease
a chemical used on surfaces to kill microorganisms
keeping a culture at a controlled temperature so it can grow
8.
Match the term to its correct meaning: antiseptic
a cell with a cell wall, membrane and cytoplasm but no true nucleus
the set of methods used to stop unwanted microorganisms entering a culture
keeping a culture at a controlled temperature so it can grow
a chemical used on skin to kill or slow microorganisms
9.
Which term is described as: keeping a culture at a controlled temperature so it can grow?
colony
pathogen
incubation
antiseptic
10.
Match the term to its correct meaning: colony
a cell with a cell wall, membrane and cytoplasm but no true nucleus
a microorganism that causes disease
a visible patch of millions of microorganisms grown from one cell
keeping a culture at a controlled temperature so it can grow
11.
Match the term to its correct meaning: optimum temperature
the splitting of a bacterial cell into two identical cells
a chemical used on skin to kill or slow microorganisms
a microorganism that causes disease
the temperature at which a microorganism grows fastest
12.
Match the term to its correct meaning: bacterial cell
a chemical used on skin to kill or slow microorganisms
a cell with a cell wall, membrane and cytoplasm but no true nucleus
the splitting of a bacterial cell into two identical cells
keeping a culture at a controlled temperature so it can grow
13.
Match the term to its correct meaning: pathogen
a microorganism that causes disease
keeping a culture at a controlled temperature so it can grow
a cell with a cell wall, membrane and cytoplasm but no true nucleus
a chemical used on surfaces to kill microorganisms
14.
Which term is described as: a chemical used on skin to kill or slow microorganisms?
colony
disinfectant
antiseptic
aseptic technique
15.
Match the term to its correct meaning: incubation
a microorganism that causes disease
a chemical used on surfaces to kill microorganisms
the splitting of a bacterial cell into two identical cells
keeping a culture at a controlled temperature so it can grow
16.
Which term is described as: the splitting of a bacterial cell into two identical cells?
binary fission
pathogen
bacterial cell
optimum temperature
17.
Match the term to its correct meaning: aseptic technique
a cell with a cell wall, membrane and cytoplasm but no true nucleus
the set of methods used to stop unwanted microorganisms entering a culture
a chemical used on skin to kill or slow microorganisms
a visible patch of millions of microorganisms grown from one cell
18.
Which term is described as: a chemical used on surfaces to kill microorganisms?
disinfectant
bacterial cell
optimum temperature
pathogen
19.
Which term is described as: a visible patch of millions of microorganisms grown from one cell?
incubation
colony
aseptic technique
optimum temperature
20.
Which term is described as: a microorganism that causes disease?
pathogen
aseptic technique
binary fission
antiseptic
21.
Which term is described as: a cell with a cell wall, membrane and cytoplasm but no true nucleus?
bacterial cell
incubation
colony
antiseptic
22.
Which term is described as: single-celled microorganisms?
microorganism
fungi
agar jelly
bacteria
23.
Which term is described as: the set of methods used to stop unwanted microorganisms entering a culture?
colony
aseptic technique
pathogen
bacterial cell
24.
Which term is described as: an organism too small to see clearly without magnification?
bacteria
agar jelly
microorganism
fungi
25.
Which term is described as: the temperature at which a microorganism grows fastest?
pathogen
aseptic technique
optimum temperature
incubation
26.
A chemical used on the skin is an _____.
disinfectant
indicator
antibiotic
antiseptic
27.
The temperature where growth is fastest is the _____ temperature.
ambient
minimum
optimum
maximum
28.
Methods that keep unwanted microorganisms out are _____ technique.
aerobic
antiseptic
aseptic
acidic
29.
A microorganism that causes disease is a _____.
producer
consumer
decomposer
pathogen
30.
Bacteria reproduce by binary _____.
fusion
budding
fission
fertilisation
31.
A visible patch grown from a single cell is a _____.
culture
coat
spore
colony
32.
Antiseptics are used on surfaces and disinfectants on skin. - True or false?
True
False
33.
Wire loops are heated in a flame before use to sterilise them. - True or false?
True
False
34.
A pathogen is a microorganism that causes disease. - True or false?
True
False
35.
Aseptic technique stops unwanted microorganisms entering a culture. - True or false?
True
False
36.
Very high temperatures kill microorganisms by damaging their proteins. - True or false?
True
False
37.
In good conditions a bacterial population can double every twenty minutes. - True or false?
True
False
38.
The optimum temperature is where a microorganism grows fastest. - True or false?
True
False
39.
School cultures are incubated at about 25 degrees Celsius to reduce the risk of growing human pathogens. - True or false?
True
False
40.
Wire loops are cooled in water before use to sterilise them. - True or false?
True
False
41.
A pathogen is any microorganism, harmful or not. - True or false?
True
False
42.
Antiseptics are used on skin and disinfectants on surfaces. - True or false?
True
False
43.
In good conditions a bacterial population doubles about once a year. - True or false?
True
False
44.
Bacteria reproduce only by joining two parent cells together. - True or false?
True
False
45.
The optimum temperature is where a microorganism stops growing. - True or false?
True
False
46.
Aseptic technique is used to add extra microorganisms to a culture. - True or false?
True
False
47.
School cultures are incubated at 37 degrees Celsius to grow human pathogens faster. - True or false?
True
False
48.
Very high temperatures make microorganisms grow fastest of all. - True or false?
True
False
49.
Bacteria reproduce by binary fission, splitting into two. - True or false?
True
False
50.
Bacterial cells have no true nucleus. - True or false?
True
False
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Part of Unit 7: Genes and inheritance — see every lesson and quiz in this unit.
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