Cell structure

Question 1

Cells

Answer 1

Cells are the basic units of life. The parts inside a cell are known as organelles. Different types of cells can have different organelles.

Question 2

Cytoplasm

Answer 2

Site of cell reactions. Found in all cells

Question 3

Cell membrane

Answer 3

Controls entry and exit of molecules to cells. Found on all cells

Question 4

Nucleus

Answer 4

Contains genetic info/DNA. Controls cell activities. Not found in bacterium cells

Question 5

Ribosomes

Answer 5

Sites of protein synthesis (build-up). Found in all cells

Question 6

Mitochondria

Answer 6

Sites of aerobic respiration. Found in all but bacterium cells.

Question 7

Cell wall

Answer 7

Gives the cell support and structure. Found in all but animal cells

Question 8

Vacuole

Answer 8

Contains cell sap. Found in all but bacterium and animal cells.

Question 9

Chloroplasts

Answer 9

Contains chlorophyll. Traps light for photosynthesis. Found in green plant cells.

Question 10

Plasmid

Answer 10

Additional rings of DNA. Found in bacterium cells

Question 11

How to calculate the size of cells in a microscope field of view

Answer 11

Field of view ÷ number of cells that can be viewed across the diameter.

Question 12

Plant cell walls

Answer 12

The cell wall of a plant cell is made of cellulose fibres. Its strong, rigid and slightly elastic so is ideal for uptake of water.