Click here to load reader
Upload
hector-carr
View
216
Download
2
Embed Size (px)
Citation preview
The Bacterial CellThe Bacterial CellBacteria are Bacteria are prokaryoticprokaryotic
(lack a nucleus)(lack a nucleus)
Shape of BacteriaShape of Bacteria
RoundRound – cocci – cocci Example – Example – strep – throatstrep – throat
((Streptococcus pyogenesStreptococcus pyogenes))
Shape of BacteriaShape of Bacteria
Rod-shapedRod-shaped - - bacilli bacilli Example – Example – E. coliE. coli
((Escherichia coliEscherichia coli))Usually found in the intestinesUsually found in the intestines
Shape of BacteriaShape of Bacteria
Spiral shapedSpiral shaped – spirilla – spirilla
Example – Example – Lyme diseaseLyme disease
((Borrelia burgdorferiBorrelia burgdorferi))
Movement of BacteriaMovement of Bacteria
FlagellaFlagella – a long whip-like – a long whip-like structurestructure that helps the cell that helps the cell move by move by spinningspinning in place like a in place like a propeller.propeller.
A bacterial cell A bacterial cell can have can have manymany flagella, one or flagella, one or none.none.
If a bacterial cell If a bacterial cell does not have a does not have a flagella, they flagella, they depend on depend on airair, , water or clothing water or clothing to carry them to carry them around.around.
ReproductionReproduction
Bacteria Bacteria splitsplit to reproduce. to reproduce. Some can split every Some can split every 2020 minutes.minutes.
video
Obtaining FoodObtaining Food
Autotrophs Autotrophs – make their own – make their own food.food.
Obtaining FoodObtaining Food
HeterotrophsHeterotrophs – obtain food – obtain food by eating by eating autotrophsautotrophs or other or other heterotrophs.heterotrophs.
Types of BacteriaTypes of Bacteria
Helpful BacteriaHelpful Bacteria
Food: cheese, sauerkraut, pickles, Food: cheese, sauerkraut, pickles, sour cream and yogurtsour cream and yogurt
Helpful bacteriaHelpful bacteria
NatureNature’’s clean-up crew - Bacteria, along s clean-up crew - Bacteria, along with fungus and some insects are with fungus and some insects are decomposers that help break down dead decomposers that help break down dead mattermatter..
Click Click here for a video of decomposing for a video of decomposing matter. (get ready – this is a little intense!)matter. (get ready – this is a little intense!)
Harmful BacteriaHarmful Bacteria
Illness and Illness and HealthHealth
–Strep throat Strep throat and food and food poisoningpoisoning
AntibioticAntibiotic A chemical that can kill A chemical that can kill bacteria.bacteria.