Growth of microbes in a solid media is identified by the formation of? a) Pellicle at the top of media b) Colonies c) Sediment at the bottom d) Turbidity

Microaerophiles A) O do not require oxygen for growth B) O are the same as facultative anaerobes C) O have the same oxygen reguirements as aerotolerant anaerobes D) O completely lack enzymes protecting them from the damaging effects of oxygen. E O None of the above are correct

Why must water be subjected to microbiological analysis?

Which percentage of medical waste is infectious or hazardous? A) 25% B)50% C)75% D) 85%

Which of the following occurs when a biofilm (or a part of it) begins to starve or experiences oxygen depletion? A) O attachment B) O quorum sensing C) O EPS (exopolysaccharide) production D) O dissolution or dispersal E) O biofilm maturation

Why does saliva not serve as a good microbialgrowth medium?

What cell types would be able to grow on the ECM in the following situations? F- , Hfr , Mix   a) Streptomycin was not added to the ECM.   b) The ECM contains thiamine.   c) The ECM contains all 20 amino acids and all 5 nitrogenous nucleic acid bases

a) Biofilm is:   a. a complex established community of microorganisms on solid surfaces   b. is a layer of millions of identical bacteria on solid surfaces   c. is a layer of compounds released from the tissue as a protection against pathogenic microorganisms   d. All of these are correct b) Capsule formation is associated with the virulence of pathogenic bacteria. Why? Select all that apply.   a. They are sticky and attach better   b. They can escape phagocytosis   c. The capsule makes them grow/multiply faster   d. They kill immune cells

Is this correct answer?

Why are the Methyl Red/Voges-Proskauer tests done after 48 hours of incubation?a) Readings taken at earlier time points may be different from readings taken at 48 hours b) Bacteria need 48 hours to process all the oxygen in the media c) Bacteria grow slowly in the MR/VP media d) K2HPO4 needs 48 hours to react with the acids produced by fermenting  bacteria