B5 biology questions
1) Bacteria reproduces rapidly by binary fusion and produce toxins which damages cells whilst
viruses enter a host cell first and then reproduces rapidly by making copies, the cell bursts
and the virus is released.
2) Awareness – avoid being around malarial areas
Bite prevention – use insect repellent to avoid being bitten and use insecticide
Chemoprophyxais - take drugs that kill parasites in your blood
Diagnosis – after travelling, get your blood tested for malaria
3) Enlarging yellow spots decrease the surface area in a plant so less chloroplasts are present
so that means less light can be absorbed in the chlorphyll for photosynthesis so the plant
grows slower so reduced photosynthesis.
4) HIV eventually leads to AIDS, this is the long term effect. HIV attacks the immune system
which weakens your immune system and makes you prone to diseases , it starts of with mild
symptoms like flu and gradually increases because the immune system weakens more and is
unable to fight against infections. These diseases eventually kill the patients.