Single-celled and many-celled organisms

Question 1

Single-celled and many-celled life: which statement is true?

• A. Single-celled organisms cannot move.
• B. All single-celled organisms are bacteria.
• C. A mushroom is a single cell.
• D. Bacteria are single-celled.

Question 2

Is this organism unicellular or multicellular: a bacterium?

• A. unicellular (one cell)
• B. multicellular (many cells)

Question 3

An amoeba has no lungs or stomach. How does oxygen get into it?

• A. by diffusion through its cell membrane
• B. through tiny lungs
• C. it does not need oxygen ever
• D. through its cell wall made of wood

Question 4

Single-celled and many-celled life: which statement is true?

• A. A unicellular organism carries out all seven life processes in one cell.
• B. Single-celled organisms cannot move.
• C. All single-celled organisms are bacteria.
• D. A mushroom is a single cell.

Question 5

Is this organism unicellular or multicellular: amoeba?

• A. unicellular (one cell)
• B. multicellular (many cells)

Question 6

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 cannot be alive because it is so small
• C. It is a multicellular plant
• D. It must be a bacterium because it is small

Question 7

Single-celled and many-celled life: which statement is true?

• A. All single-celled organisms are bacteria.
• B. Multicellular organisms have cells that are specialised for different jobs.
• C. A mushroom is a single cell.
• D. Single-celled organisms cannot move.

Question 8

Is this organism unicellular or multicellular: euglena?

• A. unicellular (one cell)
• B. multicellular (many cells)

Question 9

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 cannot be alive because it is so small
• B. It is a single-celled organism that carries out all life processes in one cell
• C. It is a multicellular plant
• D. It must be a bacterium because it is small

Question 10

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. Bacteria are single-celled.

Question 11

Is this organism unicellular or multicellular: a jellyfish?

• A. unicellular (one cell)
• B. multicellular (many cells)

Question 12

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 single-celled organism that carries out all life processes in one cell
• D. It is a multicellular plant

Question 13

Single-celled and many-celled life: which statement is true?

• A. All single-celled organisms are bacteria.
• B. Bacteria are single-celled.
• C. Single-celled organisms cannot move.
• D. A mushroom is a single cell.

Question 14

Is this organism unicellular or multicellular: moss?

• A. unicellular (one cell)
• B. multicellular (many cells)

Question 15

A bread maker adds yeast to dough. What is the yeast?

• A. a single-celled plant
• B. a multicellular animal
• C. a non-living powder
• D. a single-celled fungus

Question 16

Single-celled and many-celled life: which statement is true?

• A. Single-celled organisms cannot move.
• B. A mushroom is a single cell.
• C. Bacteria are single-celled.
• D. All single-celled organisms are bacteria.