Question

1) The stage of biofilm formation following attachment is

Select one:

a. invasion

b. colonization

c. development

d. penetration

2) Which of the following statements is not true about biofilms?

Select one:

a. It can cause disease to human.

b. It can be found on water-solid or water-air surfaces.

c. All of the above statements are correct.

d. Water and nutrients cannot enter the biofilms.

e. It can be composed of many different types of bacteria.

3) Bacteria in biofilms communicate through

Select one:

a. cilia

b. quorum sensing

c. DNA

d. lactose

e. none of the above

4) Which of following are good sources for obtaining a water sample to create biofilms in lab?

Select one or more:

a. aquarium

b. pond

c. lake

d. ditch

5) When using the pipette, after you place the sterile pipette tip in the broth culture you slowly release the plunger to draw up the desired volume into the tip.

Select one:

True

False

6) Motility test medium is a slant.

Select one:

True

False