Biology 3.1.2 Flashcards
How do Viruses Reproduce?
By inserting their Genetic Material into Host Cells and creating new Protein capsules to build new Viral Particles.
What type of Infection is Measles?
Viral Infection.
What are the main Symptoms of Measles? (2)
-Fever.
-Red Skin Rash.
How is Measles Spread? (1)
Inhalation of Droplets from coughs & sneezes.
How can you Prevent Measles?
Vaccination.
What type of Infection is HIV?
Viral Infection.
What are the main Symptoms of HIV? (3)
-Flu-like.
-If untreated, can travel to Lymph Nodes & attack Cells of the Immune System.
-Can stay hidden in Immune System and keep damaging it, until it becomes AIDS.
How is HIV Spread? (2)
-Direct Sexual Contact.
-Exchange of Bodily Fluids.
How can you Prevent HIV?
Antiretroviral Drugs.
What type of Infection is Tobacco Mosaic Virus?
Viral Infection.
What type of Organism does TMV affect?
Plants.
What are the main Symptoms of TMV? (2)
-Mosaic pattern of Discolouration on Leaves- Virus Infects the Chloroplasts.
-Plant won’t grow due to lack of P.sis, as Chloroplasts were Infected.
How is TMV Spread? (2)
-Plants in Direct Contact with an Infected Plant.
-Plants in Contact with Infected Soil. The Virus can stay in Soil for ~50 years.
How can you Prevent TMV?
Good Field Hygiene.
