Bacteria and Viruses

What is the process by which bacteria reproduce?

• Binary fission

• Budding

• Fragmentation

• Mitosis

What is a type of good bacteria that helps us digest food?

• E. coli

• Staphylococcus aureus

• Salmonella

• Clostridium botulinum

What is the difference between good bacteria and bad bacteria?

• Good bacteria help with processes like digestion, while bad bacteria can cause infections and diseases.

• Good bacteria are larger in size than bad bacteria.

• Bad bacteria are essential for human health and well-being.

• Good bacteria can survive in extreme conditions, while bad bacteria cannot.

What is the tough, outer structure of bacteria called?

• Cell membrane

• Cytoplasm

• Cell wall

• Nucleus

What is a pathogen?

• A pathogen is an organism that causes disease.

• A pathogen is a type of vaccine.

• A pathogen is a healthy bacteria.

• A pathogen is a virus that prevents illness.

What structures do bacteria use to move?

• Cilia and flagella

• Pseudopodia

• Cilia only

• Flagella only

What is the role of bacteria in the nitrogen cycle?

• Bacteria convert nitrogen in the atmosphere into forms that plants can use.

• Bacteria decompose organic matter into carbon dioxide.

• Bacteria absorb nitrogen from the soil for their own growth.

• Bacteria produce oxygen as a byproduct of nitrogen fixation.

What is the function of the bacterial cell wall?

• It provides energy for the bacterial cell.

• It helps in the reproduction of the bacterial cell.

• The cell wall provides structure and protection to the bacterial cell.

• It aids in the movement of the bacterial cell.

What is a vaccine?

• A vaccine is a substance that stimulates the immune system to recognize and fight specific pathogens.

• A vaccine is a type of medication used to treat infections.

• A vaccine is a food supplement that boosts overall health.

• A vaccine is a chemical that kills all bacteria in the body.

What is the shape of spherical bacteria called?

• Bacillus

• Spirillum

• Coccus

• Vibrio