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Single-celled and many-celled organisms

6th grade (Year 7 in England) · 16 questions · Common Core: NGSS.MS-LS1-1 · England: KS3 Biology: Cells and organisation

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1
Question 1
Pond water is viewed under a microscope. A tiny organism moves using a whip-like tail and has a nucleus and chloroplasts. What is true?
- A. It is a single-celled organism that carries out all life processes in one cell
- B. It must be a bacterium because it is small
- C. It cannot be alive because it is so small
- D. It is a multicellular plant
2
Question 2
Is this organism unicellular or multicellular: amoeba?
- A. unicellular (one cell)
- B. multicellular (many cells)
3
Question 3
Single-celled and many-celled life: which statement is true?
- A. Some fungi, such as yeast, are single-celled.
- B. A mushroom is a single cell.
- C. Single-celled organisms cannot move.
- D. All single-celled organisms are bacteria.
4
Question 4
Why does a multicellular organism need specialised cells?
- A. Specialised cells never die
- B. All its cells must be identical
- C. Different cells can do different jobs, sharing the work
- D. It cannot grow otherwise
5
Question 5
Is this organism unicellular or multicellular: euglena?
- A. unicellular (one cell)
- B. multicellular (many cells)
6
Question 6
Single-celled and many-celled life: which statement is true?
- A. Some fungi, such as yeast, are single-celled.
- B. All single-celled organisms are bacteria.
- C. Single-celled organisms cannot move.
- D. A mushroom is a single cell.
7
Question 7
A bread maker adds yeast to dough. What is the yeast?
- A. a non-living powder
- B. a multicellular animal
- C. a single-celled plant
- D. a single-celled fungus
8
Question 8
Is this organism unicellular or multicellular: euglena?
- A. unicellular (one cell)
- B. multicellular (many cells)
9
Question 9
Single-celled and many-celled life: which statement is true?
- A. A unicellular organism carries out all seven life processes in one cell.
- B. All single-celled organisms are bacteria.
- C. A mushroom is a single cell.
- D. Single-celled organisms cannot move.
10
Question 10
Pond water is viewed under a microscope. A tiny organism moves using a whip-like tail and has a nucleus and chloroplasts. What is true?
- A. It must be a bacterium because it is small
- B. It is a multicellular plant
- C. It cannot be alive because it is so small
- D. It is a single-celled organism that carries out all life processes in one cell
11
Question 11
Is this organism unicellular or multicellular: a mushroom?
- A. unicellular (one cell)
- B. multicellular (many cells)
12
Question 12
Single-celled and many-celled life: which statement is true?
- A. A mushroom is a single cell.
- B. All single-celled organisms are bacteria.
- C. Single-celled organisms cannot move.
- D. Multicellular organisms have cells that are specialised for different jobs.
13
Question 13
A bread maker adds yeast to dough. What is the yeast?
- A. a non-living powder
- B. a multicellular animal
- C. a single-celled plant
- D. a single-celled fungus
14
Question 14
Is this organism unicellular or multicellular: a jellyfish?
- A. unicellular (one cell)
- B. multicellular (many cells)
15
Question 15
Single-celled and many-celled life: which statement is true?
- A. Single-celled organisms cannot move.
- B. Bacteria are single-celled.
- C. All single-celled organisms are bacteria.
- D. A mushroom is a single cell.
16
Question 16
Pond water is viewed under a microscope. A tiny organism moves using a whip-like tail and has a nucleus and chloroplasts. What is true?
- A. It must be a bacterium because it is small
- B. It cannot be alive because it is so small
- C. It is a multicellular plant
- D. It is a single-celled organism that carries out all life processes in one cell

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