Pathogens Unit Quiz

What percentage of bacteria are actually pathogens?

• 50%

• 25%

• 10%

• 1%

Which of the following is NOT a characteristic of bacteria?

• Contain ribosomes

• Have a nucleus

• Unicellular

• Prokaryotic

What is the primary component of bacterial cell walls?

• Lignin

• Cellulose

• Chitin

• Peptidoglycan

How do bacteria primarily reproduce?

• Spore formation

• Budding

• Conjugation

• Binary fission

Which process involves bacteria taking in foreign DNA from their surroundings?

• Transduction

• Binary fission

• Transformation

• Conjugation

Why are viruses not considered living organisms?

• They have no genetic material

• They cannot reproduce on their own

• They have a metabolism

• They are made of cells

What is the protein coat of a virus called?

• Nucleoid

• Cell wall

• Capsid

• Envelope

Which type of viral life cycle involves the virus integrating its DNA into the host's DNA?

• Lytic cycle

• Conjugation

• Lysogenic cycle

• Binary fission

What triggers a virus in the lysogenic cycle to enter the lytic cycle?

• Host cell death

• Presence of antibiotics

• Environmental changes

• Lack of nutrients

Which of the following diseases is an example of a virus transitioning from lysogenic to lytic cycle?

• Common cold

• Chickenpox to shingles

• Tuberculosis

• Strep throat