BACTERIA

Part of the Moneran Kingdom One celled organism that lacks a nucleus they do however have nuclear material within the cell wall

TRAITS

One celled monerans Larger than viruses Live in water, soil, food EVERYWHERE Shapes ROUND, SPIRAL, ROD No nucleus 1 main chronmosome Cell wall Cell membrane Reproduce, grow, carry out cellular respiration

MORE TRAITS

Sticky outer layer Flagellum---whip-like thread Reproduce by fission(asexual) divide into 2 organisms Chromosome parts make a copy of itself then the cell divides Bacteria need moisture, certain temperature, and food to survive

TYPES OF BACTERIA

PARASITES AND SAPROPHYTES Parasites feed on living things Saprophytes feed on dead material

BACTERIA AND DISEASE

Human diseases caused by bacteria Strep throat Tuberculosis Certain kinds of pneumonia gonorrhea

PLANT DISEASES

Fire blight Crown gall fig pg. 81

Be sure to read pg 82 for Koch’s Postulates

COMMUNICABLE DISEASES CAUSED BY BACTERIA Passed from person to person by Air Sneezing, coughing Pneumonia, strep throat, tuberculosis

BACTERIA CAN BE SPREAD By touching anything that is infected Clothes, silverware, food drinking water Sexual contact Syphilis Gonorrhea Insects, cockroaches, flies and mosquitoes

HELPFUL BACTERIA

Bacteria is needed to decompose dead matter

Bacteria in our stomachs and intestines help make vitamins that we need To help make linen, rope Antibiotics which are chemical substances that kill or slow the growth of bacteria

BACTERIA AND FOOD Cottage cheese Swiss chese Sour cream Butter milk Sauerkraut Vinegar yogurt

CONTROLLING BACTERIA High heat (boiling) Pasteurization(heating milk) Refrigeration Freezing (slow growth) Dehydration take water out of food(noodles, cereal) Antiseptics kill bacteria on living things and prevents infection Disinfectants kill bacteria on non-living things –