WEEK 11, QUIZ 11

Match the microbe with its oxygen classification

FACULTATIVE ANAEROBE: Microbe that can grow both with and without oxygen present

OBLIGATE ANAEROBE: Microbe that dies in the presence of oxygen

AEROTOLERANT ANAEROBE: Microbe that is not killed by oxygen but prefers to grow without oxygen

MICROAEROPHILE: Microbe that prefers a reduced amount of oxygen

Which of the following is NOT TRUE about enzymes?

They get used up after catalyzing a reaction

The enzyme catalase breaks down hydrogen peroxide into water and __________.

Oxygen

Match the microbe with where it might be found.

Psychrophile: refrigerator

Mesophile: human body

Thermophile: hot springs

If you have 10 bacteria on your sandwich and their doubling time is 15 minutes, how many bacteria will be on your sandwich if you leave it out for 4 hours while you are in class?

655,360

A triage nurse in the ER begins the assessment of a patient with traumatic brain injury. In this condition, there is cerebral edema (swelling of tissues in the brain), so the administration of a ___________I.V. solution helps to move water out of the cranial space and reduce swelling.

hypertonic

You put 1 mL of a contaminated water sample into 99 mLs of broth to make a 1/100 dilution, and then you plated 0.25 mLs of this dilution on nutrient agar media. After incubation you counted 87 colonies.  How many CFU/mL of bacteria were in the original water sample?

3.48 x 10^4

A friend tells you that they don't want the latest COVID-19 vaccine booster because they think it's not needed right now. How would you respond? (pick the best response)

It sounds like you've heard some things that have convinced you the booster isn't necessary?