bacteria

What is the term for bacteria that are rod-shaped?

• Coccus

• Spirillum

• Bacillus

• Vibrio

What is the role of the cell wall in bacterial cells?

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

• The cell wall allows for nutrient absorption.

• The cell wall facilitates cell division.

• The cell wall helps in energy production.

What are the two main types of bacteria based on oxygen requirement?

• Aerobic (require oxygen) and anaerobic (do not require oxygen)

• Facultative (can survive with or without oxygen) and microaerophilic (require low levels of oxygen)

• Photosynthetic (use light for energy) and chemosynthetic (use chemicals for energy)

• Pathogenic (cause disease) and non-pathogenic (do not cause disease)

What is an antibiotic?

• A substance that kills or inhibits the growth of bacteria.

• A type of medication used to treat viral infections.

• A natural substance that boosts the immune system.

• A chemical compound that promotes cell growth.

How do bacteria reproduce?

• Through a process called binary fission.

• By budding off from the parent cell.

• Through sexual reproduction involving gametes.

• By fragmentation of the parent cell.

Do bacterial cells have a nucleus?

• Yes, bacterial cells have a nucleus.

• No, bacterial cells do not have a nucleus.

• Some bacterial cells have a nucleus.

• Bacterial cells have a nucleus-like structure.

What is the difference between gram-positive and gram-negative bacteria?

• Gram-positive bacteria have a thin peptidoglycan layer and no outer membrane.

• Gram-negative bacteria have a thick peptidoglycan layer and no outer membrane.

• Gram-positive bacteria have a thick peptidoglycan layer, while gram-negative bacteria have a thin peptidoglycan layer and an outer membrane.

• Gram-positive bacteria have an outer membrane, while gram-negative bacteria do not.

What is the shape of bacteria called that is sphere-shaped?

• Bacillus

• Spirillum

• Coccus

• Vibrio

What is the function of plasmids in bacteria?

• Plasmids contain DNA strands that are separate from the main chromosomal DNA.

• Plasmids are responsible for protein synthesis in bacteria.

• Plasmids help in the replication of the bacterial cell wall.

• Plasmids are involved in the metabolism of carbohydrates.

Are bacteria that cause strep throat harmful or helpful?

• Harmful.

• Helpful.

• Neutral.

• Beneficial.