Bacteria and Viruses Flashcards
Name organelles of bacertia
- Cell surface membrane
- Cytoplasm
- Cell walls
- Ribosomes
- Plasmids
- Mesosomes
- Flagellum
- Pilli
Name organelles of virus
- No wall, membrane, cytoplasm or organelles
- Nucleic acid in protein coat
- DNA or RNA
What is the difference between genetic material of bacteria and viruses?
- Bacteria has circular strand of DNA
- Virus has DNA or RNA
Can bacteria and viruses live independently?
- Bacteria can
- Viruses depend on host cell
What is the size of bacteria?
0.5-5 um
What is the size of viruses?
20-40nm
Do bacteria and viruses have a capsule?
- Bacteria can have mucuc based capsule
- Virus may have outer membrane of host cell surface membrane, but containing glycoproteins from the virus
How is TB carried?
In droplets from infected coughs or sneezes
How does TB affect people?
Forms in lungs due to inflammatory response
How does TB kill?
Lung tissue is slowly destroyed by the bacteria
What are symptoms of TB?
- Serious cough
- Loss of weight and appetite
- Fever
Can TB target cells outside the respiratory system?
It can target cells of the immune system
Where is HIV found?
- Blood
- Vaginal secretions
- Semen
What are HIV initial symptoms?
- Fever
- Headaches
- Tiredness
- Swollen Glands
At what point is the patient HIV positive?
3-12 weeks after infection when HIV antibodies appear in the blood
