Cell biology

Question 1

Nucleus

Answer 1

Controls cell activity, DNA is also found

Question 2

Cell membrane

Answer 2

Controls entry and exit of materials

Question 3

Ribosome

Answer 3

Site of protein synthesis

Question 4

Mitochondria

Answer 4

Site of aerobic respiration

Question 5

Cytoplasm

Answer 5

Site of chemical reactions

Question 6

Cell wall

Answer 6

Provides structural support to the cell

Question 7

Chloroplast

Answer 7

Site of photosynthesis in green plant

Question 8

Vacuole

Answer 8

Contains cell sap (water, sugar, salt)

Question 9

Plasmid

Answer 9

Contains bacterial DNA

Question 10

Diffusion

Answer 10

Movements of substances like oxygen or carbon dioxide down a concentration gradient (high to low) (passive) no energy required

Question 11

Osmosis

Answer 11

Movement of water molecules down a concentration gradient (high to low) passive (no energy required)

Question 12

Active transport

Answer 12

Movement of molecules against a concentration gradient (low to high) (active) requires energy and proteins in the cell membrane, ions move by active transport

Question 13

mRNA

Answer 13

Carries a complimentary copy from the DNA (in nucleus) to a ribosome where protein is made

Question 14

What’s build up reaction

Answer 14

Synthesis reaction

Question 15

Break down reaction

Answer 15

Degradation reaction

Question 16

What happens to an enzyme at its most optimum conditions

Answer 16

Enzymes are most active

Question 17

Denatured

Answer 17

High temperature