41.If Danielle discover a new microbe that can grow in the presence of oxygen and do not use it, then this microbe is

Select one:

O a obligate aerobes

O b. facultative anaerobes

O c. aerotolerant anaerobes

O d. microaerophiles

42.Select the option below that is an indirect method of quantifying bacterial cells

O a a Petroff-Hausser chamber

O b. turbidity measurements

c. a Coulter counter

O d. microscopic cell count

43.Which of the statements regarding enzymes is false?

Select one or more:

O a. Their concentration increases as the substrate concentration increases

O b. They are proteins that function as catalysts

O c. Enzymes provide activation energy for reactions

O d. Enzymes are denatured by high temperatures

O e. They are specific

44.What type of microbe would colonize Jenny's small intestines?

Select one:

a obligate aerobes

b. obligate anaerobes

с. microaerophiles