Introduction to Bacteria 2 types of bacteria

Controlling Bacteria

Antiseptic vs. Disinfectants

Antiseptic- chemicals that kill bacteria on living things

• means – “against infection”

Examples: iodine, hydrogen peroxide, alcohol, soap, mouthwash

Disinfectants- stronger chemicals that destroy bacteria on objects or nonliving things

BLUE-GREEN BACTERIA

Autotrophs – make their own food through photosynthesis

• commonly grow on water and surfaces that stay wet…such as rivers, creeks and dams

• larger than most bacterial cells

• Some live in salt water, snow, and acid water of hot springs

• food source for animals that live in the water