Download Micro Notes

Microbiology 1.2 and 1.3
Most organisms on Earth are single celled (unicellular)
3 Different Categories of Cells/Life:
1. Archaea - prokaryotic, unicellular
- have ribosomes and cell wall for protection
- live in extreme environments (very hot hydrothermal
vent).
2. Bacteria - prokaryotic, unicellular
- ribosomes and cell wall
3. Eukarya - eukaryotic (have nucleus and organelles)
- both multi- and uni-cellular
What is a protist?
Microscopic, mostly multi-cellular, live near water
4 different types:
How do
they get
energy?
How do
they
move?
Image:
Paramecium
Sweep food into
mouth
Amoeba
Surround food
and absorb it
“Verde” Volvox
photosynthesis
“hair-like” Cilia
Pseudopod –
“fake foot.”
Colony with
flagella – “whiplike tail”
Euglena
Photosynthesis
AND
consuming
Flagella –
“whip-like
tail”
Cells are specialized: work together to perform specific duties.
Cells  Tissues  Organs  Organ Systems  Organisms
Humans have 11 organ systems and over a trillion cells.