Bacteria

Question 1

tuberculosis

Answer 1

• caused by mycobacterium tuberculosis
• active lesions in lungs cause tuberculosis from immune response
• discovered by Robert Koch

Question 2

food poisoning

Answer 2

they may cause an infection while growing in the intestines

• salmonella
• staphylococcus
• clostridium botulinum

Question 3

chlamydia

Answer 3

chlamydia trachomatis

• small intracellular parasite that causes a variety of diseases
• blindness
• PID

Question 4

streptococcus

Answer 4

• pharyngitis
• streptococcus pneumonia
• streptococcus mutans
• streptococcus pyogenes

Question 5

characteristics

Answer 5

• spirilli (spiral)
• bacilli (rod)
• cocca (round)

Question 6

Cyanobacteria

Answer 6

• gram - and photosynthesize
• responsible for introducing oxygen into the primitive atmosphere
• lack locomotion
• when commensals with fungi lichens form

Question 7

archae characteristics

Answer 7

• most are chemoautotrophs
• some mutualistic
• most commensalistic
• none to be parasitic
• none are photosynthetic
• may live in harsh conditions

Question 8

archae similarities and differences with domain bacteria and eukarya

Answer 8

• they don’t have peptidoglycan in cell walls like bacteria

- biochemically more like eukarya than bacteria

Question 9

gram stain

Answer 9

bacteria are commonly diagnosed using the gram stain procedure

gram +: retain and appear purple due to thick peptidoglycan layer
gram -: appear pink due to thin peptidoglycan layer