CH 9 SEC 2CH 9 SEC 2

BACTERIABACTERIA

THE BACTERIAL CELLTHE BACTERIAL CELL

• KEY- THERE ARE BILLIONS OF BACTERIA ON EARTH.

• KEY- THEY ARE EVERYWHERE. THERE ARE MORE BACTERIA IN YOUR MOUTH THEN THERE ARE PEOPLE ON EARTH

• KEY- THEY ARE FOUND UNDER ROCKS, IN THE AIR, IN DEEP OCEAN VENTS, ON MOUNTAIN TOPS, AND ALL OVER YOUR BODY!

BACTERIAL CELLBACTERIAL CELL

• KEY- THEY WERE DISCOVERED BY LEEUWENHOEK LOOKING AT SCRAPINGS FROM HIS TEETH

• KEY- BACTERIA ARE PROKARYOTES(CELLS WITHOUT A NUCLEUS).

• KEY- THE GENETIC MATERIAL IN THEIR CELLS IS NOT CONTAINED IN A NUCLEUS.

Cont’dCont’d

• KEY- A BACTERIAL CELL LACKS MANY OTHER STRUCTURES THAT CELLS HAVE LIKE MITOCHONDRIA AND GOLGI BODIES

• MOVEMENT- SOME BACTERIA USE A

FLAGELLUM (PLURAL FLAGELLA), A LONG WHIP LIKE STRUCTURE THAT HELPS A CELL TO MOVE

IDENTIFY FLAGELLEMIDENTIFY FLAGELLEM

SIZES AND SHAPESSIZES AND SHAPES

• KEY- BACTERIA VARY GREATLY IN SIZE

• KEY- MOST BACTERIAL CELLS HAVE ONE OF THREE BASIC SHAPES: SPHERICAL, RODLIKE, AND SPIRAL

IDENTIFY SHAPESIDENTIFY SHAPES

• SKETCH AND LABEL FIGURE 6 ON THE TOP OF PAGE 326

BASIC BACTERIA SKETCHBASIC BACTERIA SKETCH

OBTAINING FOOD AND ENERGYOBTAINING FOOD AND ENERGY

• KEY- BACTERIA MUST HAVE FOOD SOURCE AND A WAY OF BREAKING DOWN THE FOOD TO RELEASE ITS ENERGY.

• AUTOTROPHS- SOME BACTERIA ARE AUTOTROPHS AND MAKE THEIR OWN FOOD

• EX- PLANT LIKE BACTERIA USE SUNLIGHT TO MAKE THEIR OWN FOOD

• HETEROTROPHS- BACTERIA THAT DOESN’T MAKE ITS OWN FOOD.

• KEY- INSTEAD THESE BACTERIA CONSUME OTHER ORGANISMS OR THE FOOD ORGANISMS MAKE.

• EX- THE BACTERIA THAT HELPS LEAVES DECAY ON THE FOREST FLOOR

RESPIRATIONRESPIRATION

• RESPIRATION- IS THE PROCESS BY WHICH BACTERIA BREAKS DOWN FOOD USING OXYGEN FOR ENERGY

ReproductionReproduction

• KEY- WHEN BACTERIA HAVE ENOUGH FOOD, THE RIGHT TEMPERATURE, AND OTHER SUITABLE CONDITIONS THEY THRIVE AND REPRODUCE FREQUENTLY

• http://app.discoveryeducation.com/search?Ntt=BACTERIA&N=4294939055

REPRODUCTIONREPRODUCTION

• KEY- THERE ARE TWO WAYS IN WHICH BACTERIA CAN REPRODUCE

• 1. ASEXUAL REPRODUCTION- A PROCESS THAT INVOLVES ONLY ONE PARENT AND PRODUCES OFFSPRING THAT ARE IDENTICAL TO PARENT.

• 2. SEXUAL REPRODUCTION- TWO PARENTS COMBINE THEIR GENETIC MATERIAL TO PRODUCE A NEW ORGANISM WHICH DIFFERS FROM BOTH PARENTS

Brain PopBrain Pop

• http://www.brainpop.com/health/diseasesinjuriesandconditions/viruses/

• http://www.brainpop.com/science/diversityoflife/bacteria/

• http://www.brainpop.com/health/diseasesinjuriesandconditions/antibioticresistance/