2.8 Disease, Defence and treatment (new) Flashcards
What is the function of a CELL WALL?
Protects + maintains shape
What is the function of a CELL MEMBRANE?
Controls substances entering and leaving the cell
What is the function of CYSTOPLASM?
Chemical reactions take place here
What is the function of a CHROMOSOME?
Contains DNA
What is the function of a SLIME CAPSULE?
Prevent bacteria drying out / Allows bacteria to stick together
What is the function of a FLAGELLA?
Allows movement
What is the function of PLASMID?
Small ring of DNA
What MICRO - Organisms cause disease?
Pathogens
Two examples of harmless bacteria?
- bacteria is in yogurt
- yeast in wine / beer
Four examples of pathogens
- bacteria , virus, protists, fungi
What is the causative agent of AIDS?
H.I.V (human immunodeficiency virus)
How does AIDS affect a person?
- Infects lymphocytes
- leads to a lack of immunity to other infections
How can AIDS be prevented?
Condom or disposable gloves
What is the causative agent of Chlamydia?
Chlamydia trachmatis (bacteria)
How does chlamydia affect an infected person
- infertility
- conjunctivitis
- lung problems in babies