micro-Lab questions

Staphylococci are ___, irregular cluster like grapes.

Gram-positive cocci

Which of The following has the risk of infection in urinary bladder and cystitis?

Sampling catheterized urine specimens

In addition to basic nutrients, ________ media contain one or more components, such as a particular carbohydrate, that can be used by some microorganisms but not by others. If the microorganism uses the component during the incubation period, a change occurs in an indicator that is also included in the medium, which results in a color change in the medium.

differential

Staphylococcus aureus produces ___ that destroys red blood cells.

hemolysin

What is the type of UTI that generally begins in your urethra or bladder and travels to and multiply in one or both of your kidney?

pylelonephritis

In addition to basic nutrients, ____ media contain one or more components that suppress the growth of some microorganisms without seriously affecting the ability of others to grow.

selective

You inoculated 0.01 ml of clean-catch voided urine sample on a nutrient agar plate and incubated at 35°C overnight. Next day, the number of colonies on the plate was 1,100. This urine sample has ____ bacteriuria. What's in the blank?

significant

any microorganism is potentially pathogenic if it enters a susceptible host

true

you cultured escherichia coli in phenol red glucose broth overnight The color of phenol red changed from red to yellow

Escherichia coli fermented glucose

Staphylococci are _____.

Facultative anaerobes

After culture of bacteria the red color of urea broth that contains phenol red indicates that urease produced by the bacteria converted urea into

ammonia

what is the enzyme that hydrolyzes starch ?

amylase

The presence of void urine is

bacteriuria