Bacteria

Question 1

bacteria

Answer 1

single celled micro-organisms with plant or animal characteristics.

Question 2

types of bacteria

Answer 2

nonpathogenic and pathogenic

Question 3

nonpathogenic

Answer 3

• most common
• does not cause harm
• does not cause disease
• may be useful (help with digestion, make yogurt, cheese)

Question 4

pathogenic

Answer 4

harmful, disease producing

Question 5

classifications of pathogenic bacteria

Answer 5

• cocci (round shape, there are 3 sub categories)
• bacilli (rod shape)
• spirilla (spiral shape)

Question 6

staphylococci

Answer 6

-formed in clusters (like a bunch of grapes)
-most common
-pus forming
-resident flora of the skin
responsible for acne, boils, abscess, MRSA

Question 7

streptococci

Answer 7

-formed in chains (like a pearl necklace)
-pus forming
-resident flora of the mouth, upper respiratory tract
responsible for strep throat, blood poisoning, folliculitis

Question 8

diplococci

Answer 8

-formed in pairs
-resident flora of the skin
responsible for bacterial pneumonia, gonorrhea,chlamydia

Question 9

bacilli

Answer 9

-rod shape
-most common
-spore forming
-cilia or flagella to aid in movement
responsible for tetanus, tuberculosis, ecoli food poisoning, anthrax

Question 10

spirilla

Answer 10

-spiral or corkscrew shape
-resistant to anibiotics
responsible for syphillis, lyme’s disease

Question 11

cell processes

Answer 11

cilia and flagella (how some bacteria move around)

Question 12

cilia

Answer 12

hair-like extensions, creates a rowing motion

Question 13

flagella

Answer 13

tail-like extension, creates a snake-like motion

Question 14

binary fission

Answer 14

• active stage of growth and reproduction
• daughter cells are produced every 20-60 mins.
• favorable conditions- ex. warm, dark, damp and dirty

Question 15

spore forming stage

Answer 15

• inactive or resting stage of growth and reproduction
• forms a spore around itself
• resistant to temperature (heat or cold), and disinfectants

Question 16

spore

Answer 16

tough, waxy outer coating that protects the bacteria from famine, dryness and unsuitable temperatures.

Question 17

exotoxin

Answer 17

• produced by the bacteria and are actively secreted
• cause irritation to the body
• initial symptoms of an infection

Question 18

endotoxin

Answer 18

• is part of the bacteria
• toxin is released AFTER the bacteria is killed or dies off
• secondary sysptoms, ex. severe inflammation

Question 19

treatment for bacterial infections

Answer 19

antibiotics