viral diseases

Created by

Marafy

Cards (18)

a virus will reproduce rapidly inside the cell and cause cell damage
viral diseases
TMV tobacco mosaic virus
Measles
HIV
TMV is a viral disease that causes plants to have a stunted growth and have mosaic like features. This stops photosynthesis
Measles causes a rash and fever , it is a viral disease and is spread by droplets in the air, can be contained with vaccination
HIV is a viral disease and is a sexually transmitted disease , causes high fever which can be fatal also leads to AIDS and can be treated with antiretroviral drugs
Late stage HIV infection, or AIDS, occurs when the body’s immune system becomes so badly damaged it can no longer deal with other infections or cancers.
what drug can be used to control HIV ?
Antiretroviral
what species of plant are infected by tmv?
tomato plant
how can a population eradicate measles?
vaccinate everyone
what type of disease are measles?
infectious
why are the number of measles cases low in the uk?
better living conditions
more hygenic
more people are vaccinated against it
if left untreated what other conditions can a HIV/AIDS patient develop?
cancers and more infections as the immune system in ineffective and does not work properly
give 2 ways of preventing the spread of HIV?
barrier methods - condoms
educating people
not sharing needles
why do plants with TMV have stunted growth?
cannot photosynthesis due to less chlorophyll
what vector transmits TMV?
seeds
what are ways farmers prevent the spread of TMV?
Genetically modified crops
good field hygiene
pest control
Suggest why viruses are classed as the ultimate parasite?
Only active inside a host cell but takes over the whole host cell.
Explain the difference between the way viruses and protists can cause
disease
Viruses insert genetic material into hosts DNA and take over cell metabolism to make new viruses before breaking out of the cell. Protists take over cells and feed on cell contents and then divide before breaking out of the cell