Bacteria Flashcards
2 things abut prokaryotes
1) most common organism on earth
2) smallest of all living organisms
No visible nucleus in a membrane
Prokaryotes
Round
Cocci
Rod shaped
Bacillus
Spiral shape
Spirillum
Lines
Strepto
Groups
Staphylo
Singles
Mono
Twos
Diplo
Fours
Tetra
3 types of movement
1) flagella
2) glide on slime
3) do not move (use blood or fluids)
Make their own food
Autotrophs
Uses sunlight
Photosynthesis
Occurs in dark areas
Chemosynthesis
Get food from another source
Heterotrophs
Use oxygen
Aerobes
Don’t use oxygen
Anaerobes
Have to it cannot have materials
Obligate
Does not matter if it has materials
Facultative
One cell splits into 2 identical cells
Binary fission
Two cells connect and exchange genetic material
Conjugation
Getting comfortable phase
Lag
Large increase phase
Exponential
Levels off phase
Stationary
Numbers decrease phase
Death
Protective internal capsule during harsh conditions
Endospores
Recycle nutrients back into the soil
Decomposes
Free nitrogen gas is changed into a visible nitrate
Nitrogen fixation
Bacteria are in modules on roots of plant like soybeans and peanut
Legumes
Anything that causes diseases
Pathogens
Pathogens cause harm by
1) damage to tissue
2) create toxins
Substances that kill or block bacterial growth
Antibiotics
Discovered 1st antibiotic
Alexander Flemming
Developed the first vaccine
Pasteur
Process of heating up food to kill bacteria
Pasteurization
Photosynthesis bacteria
Oxygen producers
3 human uses for bacteria
1) used in foods
2) cleaners
3) drugs
Heating up equipment
Sterilization