Biodiversity, Change And Continuity (Micro - Organisms) Flashcards
1
Q
Structure of a virus
A
- outer protein coat
- nucleic acid core
-symmetrical
2
Q
Characteristics of viruses
A
- Accelular
- no cytoplasm and organelles
- Parisitic
- host specific
3
Q
How does HIV and AIDS affect a person?
A
- enters through the blood stream
- attacks white blood cells (T4 lymphocytes)
- destroys a persons immune system
4
Q
How to treat HIV
A
- PEP : post exposure prophylaxis
- ART : anti retrovial therapy
5
Q
Structure of bacteria
A
- unicellular
- no nucleus
οΏΌ- prokaryotes (no organelle,nucleus)
6
Q
Characteristics of bacteria
A
- unicellular
- found in all habitats
- many have cilia or flagella
7
Q
How does TB affect a person
A
- Attacks and destroys the lung tissue
- transferred through the air through sneezes and coughs and enters other lungs
- bacteria Multiples in the lungs
- bacteria multiply in the lungs and move to -> kidneys -> central nervous system
8
Q
How to treat TB
A
- antibiotic medication (over 6 months)
9
Q
What is biotechnology?
A
The use of micro organisms to make products which are useful to humans
10
Q
Structure of protists
A
- unicellular
- nucleus
- pseudopodium (false feet)
11
Q
Characteristics of protists
A
- eukaryotic
- membrane bound organelles
- reproduce asexually-> split into 2 (binary fission)
12
Q
How does malaria affect a person?
A
-caused by plasmodium protozoan
- it enters the human and causes red blood corpuscles to rupture
- multiples asexually from the liver
13
Q
How to treat malaria
A
- drugs
- symptoms only appear for 10 to 14 days
14
Q
Characteristics of fungi
A
- some unicellular, most multicellular
- eukaryotic
- lack chlorophyll and cannot manufacture their own food
- saprophytic decomposes
15
Q
How does fungal infections affect a person?
A
- ## affects moist surfaces
