Cells

Question 1

Cell

Answer 1

The building block of living things.

Question 2

Nucleus

Answer 2

Controls the activities of the cell. It contains chromosomes made of DNA.

Question 3

Cytoplasm

Answer 3

Jelly-like contents of a cell where many chemical reactions take place.

Question 4

Cell membrane

Answer 4

A thin layer around a cell that controls the movement of substances into and out of the cell.

Question 5

Cell wall

Answer 5

Rigid cellulose layer outside the cell membrane of a plant or bacterial cell.

Question 6

Chloroplast

Answer 6

Small disc in the cytoplasm of plants containing chlorophyll for photosynthesis.

Question 7

Permanent vacuole

Answer 7

Fluid-filled area in plant cells, containing sap.

Question 8

Mitochondria

Answer 8

The site of aerobic respiration in plant and animal cells.

Question 9

Bacteria

Answer 9

A microorganism 1-5 tiny measurements long. Its DNA is not contained within a nucleus.

Question 10

Fungi

Answer 10

Organisms with a cell wall made of chitin, rather than the cellulose found in plant cell walls.

Question 11

Specialised cell

Answer 11

A cell that has a structure well suited to its function.

Question 12

Differentiation

Answer 12

When a cell develops into a type that is specialised for a specific function.

Question 13

Diffusion

Answer 13

When the net movement of particles is from an area of high concentration to an area of lower concentration.

Question 14

Concentration gradient

Answer 14

Difference in concentration of a substance from one area to another.