Microbiology

• Bacteria • Viruses • Fungi • Protozoa • Algae • Prions • Helminths

prokaryotic cells : • no membrane bound nucleus • no membrane bound organelles • have cell wall

• slime layer that helps it stick to host and protects it from antibiotics and being engulfed by white cells and prevents it from drying out.

• maintains the shape and protects it from bursting

• performs some function done by organelles in human cells (eukaryotes)

• smaller than eukaryotes some antibiotics can disrupt protein synthesis

• larger and circular, contains genetic material to control the cell

• creates a propeller like movement to help the cell reach for food

• tiny hair-like structure to stick to host

used to transfer genetic material between other bacteria

provides barrier to ABs

thick and covers the cell membrane

co-ordinated functional communities of microbes in a matrix of polysaccharides and hydrogel and attach to a surface such as teeth and provides access to nutrients

binary vision (cell splits into 2)

when bacteria produces enzymes etc for growth, slow multiplication

bacteria multiply rapidly

nutrients are exhausted and wastes accumulating

bacteria start to die off and tissues recover

Water/moist environment, isotonic surroundings, oxygen, Temp of 37 centigrade, level 7, nutrients, stable environments.

decompose and recycle nutrientsand some produce antibacterial properties

opportunist normal flora

single eukaryotic celled animals absorb nutrients from host,can cause malaria etc

begin as normal proteins that fold incorrectly that clump together eventually killing the brain cell

worms that enter humans by eating contaminated food/water