Blog

Bacterial cells use ________ to transfer DNA from one cell to another via conjugation.   A. fimbriae B. pili C. flagella D. cilia

Which of the following describes a difference between prokaryotes and archaea?   A. Prokaryotes have cell walls composed of peptidoglycan, whereas archaea do not. B. Archaea can live only in water, and prokaryotes can live anywhere. C. Prokaryotes lack nuclei, whereas archaea do not. D. Prokaryotes reproduce asexually, whereas archaea reproduce sexually.

Describe Koch’s  experiments and  enumerate his postulates .

Where can lipopolysaccharide be found?   A. in the flagella of bacterial cells B. in the peptidoglycan layer of Gram-positive bacterial cells C. in the outer membrane of Gram-positive bacterial cells D. in the outer membrane of Gram-negative bacterial cells

________ contain a nucleus composed of genetic material surrounded by a membrane.   A. Prokaryotes B. Prokaryotes and archaea C. Eukaryotes D. Eukaryotes and archaea

Lysozyme is an antibacterial enzyme in human tears that degrades peptidoglycan. Which type of organism would be MOST sensitive to lysozyme?   A. Archaeon  B. Alga C. Gram-negative bacterium D. Gram-positive bacterium

Which of the following are NOT eukaryotic microbes? A. Algae B. Archaea C. Water molds D. Protozoa

Cells use ________ to transfer DNA from one cell to another via conjugation. A. fimbriae B. Pili C. Celia D. Flagella

The study of how our body fights infection from pathogenic microbes is called ________.   A. immunology B. epidemiology C. molecular biology D. epistemology

Which of the following is NOT a part of bacterial flagella?    A. Fimbria B. Basal body C. Hook D. Filament