transport

Question 1

describe diffusion?

Answer 1

-passive
-high -> low concentration
-down concentration gradient

Question 2

describe osmosis?

Answer 2

-diffusion of water
-high -> low concentration of water
- across partially permeable membrane

Question 3

describe osmosis practical?

Answer 3

potatoes in different sugar solutions
-mass increase= osmosed in
-mass decrease= osmosed out
-calculate % change

Question 4

describe active transport?

Answer 4

-active
-using energy
-low -> high concentration
- against concentration gradient
-eg. root hair cells

Question 5

equation for respiration?

Answer 5

GO COW
C6H12O6 + 6O2 -> 6CO2 + 6H2O

Question 6

is respiration exo or endo?

Answer 6

exo!

Question 7

define “metabolism”?

Answer 7

the sum of all chemical reactions in the body

Question 8

what’s the equation for photosynthesis?

Answer 8

COW GO!
6CO2 + 6H2O -> C6H12O6 + 6O2

Question 9

what does the liver do?

Answer 9

removes lactic acid and turns glucose into glycogen

Question 10

what is glucose used for in cells?

Answer 10

CELLULOSE for cell walls
RESPIRATION
OILS AND FATS for storage in seeds
PROTEIN from amino acids
STARCH to be stored in roots stems and leaves

Question 11

why is starch better for storage than glucose?

Answer 11

it is insoluble

Question 12

what is the photosynthesis practical?

Answer 12

pondweed!
oxygen collects as pondweed photosynthesises
vary light source distance from plant

Question 13

what’s the equation for anaerobic respiration?

Answer 13

glucose -> lactic acid

Question 14

what is oxygen debt?

Answer 14

where oxygen is needed to break down acid after exercise