Bacteria and Viruses Quiz

Which of the following is a characteristic of bacteria but not viruses?

• Have metabolism; can survive alone

• Use host cell to reproduce

• Capsid (protein coat)

• DNA or RNA (never both)

What type of genetic material is found in bacteria?

• DNA or RNA (never both)

• Circular DNA (in nucleoid) + plasmids

• Capsid (protein coat)

• Linear DNA

What is the function of ribosomes in bacteria?

• Make proteins

• Provide structure

• Control movement

• Protect against immune system

What is the primary difference between bacteria and viruses in terms of living status?

• Both are living organisms

• Bacteria are living, viruses are nonliving

• Both are nonliving

• Viruses are living, bacteria are nonliving

Which bacterial structure is responsible for movement or attachment?

• Ribosomes

• Flagella / pili

• Capsule

• Plasma membrane

What is the function of the capsid in a virus?

• It attaches to host receptors

• It serves as the protein coat

• It contains DNA or RNA

• It decomposes dead material

What is the genetic material found in viruses?

• Lipid layer

• Surface proteins

• DNA or RNA

• Peptidoglycan

Which of the following is an example of bacterial fermentation?

• Producing antibiotics

• Making yogurt and cheese

• Recycling nitrogen

• Digesting food in the gut

What is the result of binary fission in bacteria?

• One identical daughter cell

• Two identical daughter cells

• Four identical daughter cells

• No daughter cells are formed

What is the main difference between the lytic and lysogenic viral life cycles?

• Lytic cycle integrates viral DNA into the host's DNA, while lysogenic does not

• Lytic cycle causes the host cell to burst, while lysogenic cycle keeps the virus dormant

• Lysogenic cycle immediately releases new viruses, while lytic cycle does not

• Lytic cycle does not involve the host cell, while lysogenic cycle does