B5,B6,B7, B8 & B9

gonorrohoea

bacterium

malaria

protist

measles

virus

explain how the change in blood flow to an athlete’s muscles helps him to run

an increase in blood flow to the skeletal muscles means that more glucose and oxygen is delivered to the muscles via the blood.

these are both needed for aerobic respiration to produce atp and energy for muscle contraction

explain how releasing sterile mosquitos reduces the spread of malaria

the release of sterile mosquitos can reduce the spread of malaria because females can not breed with the sterilised male mosquitoes( as they are infertile) decreasing the mosquito population thus decreasing the likelilhood of the spread of malaria

name the piece of equipment used to view the virus

electron microscope

explain why plants infected with tobacco mosaic virus grow slowly

tobacco mosaic virus discolours the leaves, damaging and deactivating the chlorophyll

chlorophyll is needed for the absorption of sunlight, to carry out photosynthesis

photosynthesis releases energy which is used for the production of protiens for growth and repair

thus the plants with tmv grow slower as their growth is stunted by the inability to absorb enough sunlight