lab exam 6 review for exam 2

Question 1

how did covid 19 spread

Answer 1

international travel and exposure to droplets

Question 2

how would you explain the results of hand-wash lab

Answer 2

students washed hands for 10 sec

Question 3

what result do you expect in post-wash plate compared to pre-wash place

Answer 3

decrease colonies

Question 4

how can cell phone be disinfected

Answer 4

35-75% ethanol spray

Question 5

how does soap disinfect hands

Answer 5

soup detaches bacteria from hand

Question 6

why is cell phone in the video contaminated

Answer 6

skin bacteria and fungus contaminate cell phone from frequent handling

Question 7

how does hand sanitizer disinfect hands

Answer 7

it kills bacteria due to its ethanol or benzalkonium chloride content

Question 8

how can infection be prevented

Answer 8

all of the above

Question 9

how do glo-germs spread from hands of a student to infect multiple students

Answer 9

glo-germs spread from contaminated hands and fomites

Question 10

how to prevent covid-19 spread

Answer 10

all of the above