Bacteria The First Life Forms On Earth

Where They Are Found Air, water, soil, animals, people, food, and more Cheese, yoghurt, and other dairy products Certain medicines Inside your intestines On your teeth Basically, bacteria are found almost everywhere on Earth.

Bacterial Organelles Cell wall- Maintains overall shape Cell membrane- Determines what goes in and out of it Flagellum- Used for motility Ribosome- Translate RNA Capsule- Protects cell Nucleoid- Function the cell Pili- Allow bacteria to attach to other cells Granule- Store nutrients Spore- Allows cell to change during extreme conditions Cytoplasm- Contains and holds all organelles

Reproduction Bacteria multiply through a process called cell fission They divide every 12 to 20 minutes They can produce billions of offspring a day

Good Or Bad There are more good types than bad types You need them to survive Bad kinds can kill a human Good kinds used in the wrong way may also kill a human They can cause horrible diseases The human body is not the natural host for bad bacteria Bodies can resist most bacterial attacks

Top Ten Genres 1.Streptomyces 2.Clostridium 3.Pseudomonas 4.Bacillus 5.Mycoplasma 6.Lactobacillus 7.Mycobacterium 8.Streptococcus 9.Corynebacterium 10.Bacteroides

Interesting Facts It takes over 1,000,000 bacteria cells to cover a pin head They can make vitamins, break down garbage, & maintain the atmosphere They were the first life forms to exist on Earth They can be found at temperatures above the boiling point and below the freezing point They developed photosynthesis They have shaped the planet They created Earth’s atmospheric oxygen We cannot live without them Some came to Earth from space on meteorites They inhabit every environment on Earth They eat sugar, starch, sunlight, sulfur, and iron They are prokaryotic