Year 8

Unicellular organisms

Define unicellular organisms, describe some of their common features and identify their uses and dangers.

Year 8

Unicellular organisms

Define unicellular organisms, describe some of their common features and identify their uses and dangers.

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Lesson details

Key learning points

  1. Define the term unicellular and label some common features of unicellular organisms
  2. Name and describe the functions of some of the sub-cellular structures of unicellular organisms
  3. Describe some uses and potential risks of unicellular organisms

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6 Questions

Q1.
What does the prefix ‘uni’ mean in words such as unicycle?
Correct answer: one
three
two
Q2.
Which part of an animal cell contains DNA?
cell membrane
cytoplasm
mitochondria
Correct answer: nucleus
Q3.
are the building blocks of all living organisms.
Correct Answer: Cells, cell
Q4.
Which part of the cell provides strength and structure?
cell membrane
Correct answer: cell wall
cytoplasm
vacuole
Q5.
Which part of the cell is where chemical reactions take place?
Correct answer: cytoplasm
nucleus
ribosomes
vacuole
Q6.
Which of the following would we need a microscope to see?
Correct answer: bacteria
fly
plant
worm

6 Questions

Q1.
Which statement best defines unicellular organisms?
A living organism made up of cells.
Correct answer: A living organism made up of only one cell.
An animal made up of only one cell.
Something made up of only one cell.
Q2.
Which of the following structures is not found in yeast?
Correct answer: cell wall
cytoplasm
nucleus
vacuole
Q3.
Which two of the following structures are found in an amoeba?
Correct answer: cell membrane
cell wall
DNA loop
Correct answer: nucleus
Q4.
Which of the following structures is not found in bacteria?
cell membrane
cell wall
DNA loop
Correct answer: nucleus
Q5.
Match each word to the correct description.
Correct Answer:carbon dioxide,A gas produced by yeast to make bread rise.

A gas produced by yeast to make bread rise.

Correct Answer:fermentation,A process that converts sugar into alcohol.

A process that converts sugar into alcohol.

Correct Answer:bacteria,A unicellular organism used to make cheese and yoghurt.

A unicellular organism used to make cheese and yoghurt.

Q6.
Which two statements are correct?
Bacteria can be used for baking and making alcohol.
Correct answer: Fermentation is where sugar is turned into alcohol.
Correct answer: Yeast can be used for baking and making alcohol.
Yeast can be used to make cheese and yoghurt.