hi!!

this is here to supposedly help with your revision.

Bacteria
- prokaryotes
-unicellular
-in air, water, soil, animals, plants, non-living things

consists of:
- circular plasmids
- cytoplasm
- cell membrane
- cell wall
-chromosomal DNA>>> not in nuclear membrane/ no nuclear membrane-bound nucleus

Cell Wall:
made of:
- cellulose
- proteins
- sugars
- lipids/ fats
- filaments (for movement-- they flick)

Classifiction:
Shapes
- rodlike
(bacili)
- spherical
(cocci)
- spiral
(spirilla)

Ability to form spores

Method of energy production
- aerobic
need oxygen for respiration
- anaerobic
do not need oxygen for respiration
oxygen>>cells>> respirate>> energy

favourable conditions>> fission

Reaction to gram stain
- purple (+)
- pink (-)

Bacteria Colonies
identification:
- colour
- shape
- size
- texture (smooth, rough, dull, shiny)
- elevation (conves, flat, undulated)
- edge (smooth, irregular, filamentous)
- transparency (transparent, translucent, opaque)

Fungi
1. mushrooms, toadstools, puffballs, bracket fungus
2. moulds
3. yeasts

- small, unicellular to large, multi-cellular

1. Mushrooms... Bracket Fungus
-made from hyphae
- hyphae spreads through material
- it grows and absorbs food
- network of hyphae>> mycelium

3. Yeasts
- mostly spherical in shape
microscopic cells
-lives in nectar of flowers
- budding
outgrowth appears, enlarges and gets cut off as individual
- important for making of bread, wine

Virusus
- make up of genetic material (DNA/ RNA)
- no nucleus,
cytoplasm,
organelles,
cell membrane
- not cells
- do not feed, grow, excrete or respirate
- have different shapes and structures
- can survive outside host (dormant)
- must penetrate into living cell to reproduce
1. in host cell, takes over physiology
2. make cell produce new viral DNA/RNA
3. cell may be destroyed in process
e.g. measles, mumps, rubella, chickenpox

Uses of micro-organisms
- small DNA content
- short life spans-- possible to conduct experiments on gene inheritance

God bless,
becky(:

edit if theres anything wrong kay?
and if you think this is a waste of time, maybe it helped in MY revision
(:
happy studying!