Biodiversity, Change And Continuity (Micro - Organisms) Flashcards
Structure of a virus
- outer protein coat
- nucleic acid core
-symmetrical
Characteristics of viruses
- Accelular
- no cytoplasm and organelles
- Parisitic
- host specific
How does HIV and AIDS affect a person?
- enters through the blood stream
- attacks white blood cells (T4 lymphocytes)
- destroys a persons immune system
How to treat HIV
- PEP : post exposure prophylaxis
- ART : anti retrovial therapy
Structure of bacteria
- unicellular
- no nucleus
οΏΌ- prokaryotes (no organelle,nucleus)
Characteristics of bacteria
- unicellular
- found in all habitats
- many have cilia or flagella
How does TB affect a person
- 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
How to treat TB
- antibiotic medication (over 6 months)
What is biotechnology?
The use of micro organisms to make products which are useful to humans
Structure of protists
- unicellular
- nucleus
- pseudopodium (false feet)
Characteristics of protists
- eukaryotic
- membrane bound organelles
- reproduce asexually-> split into 2 (binary fission)
How does malaria affect a person?
-caused by plasmodium protozoan
- it enters the human and causes red blood corpuscles to rupture
- multiples asexually from the liver
How to treat malaria
- drugs
- symptoms only appear for 10 to 14 days
Characteristics of fungi
- some unicellular, most multicellular
- eukaryotic
- lack chlorophyll and cannot manufacture their own food
- saprophytic decomposes
How does fungal infections affect a person?
- ## affects moist surfaces
How to treat fungal infections
- gargling with an anti fungal mouthwash
- applying anti fungal medication
Name the kingdoms and classification
Bacteria - Monera. (Prokaryotic)
Protists - Protista
Fungi - Fungi. (Eukaryotic)
What are viruses best described as
Infections particles
Definition of eukaryotic and prokaryotic
Pro - lack membrane bound organelles
Eu - contain membrane bound organelles
Define heterotrophic and autotrophic
Het - cannot manufacture their own food
Auto - can manufacture their own food
Define a pathogen
They are disease causing
