Bacteria Quiz

How old are bacteria?

• 1 billion years old

• 3.5 billion years old

• 5 billion years old

• 10 billion years old

What is the main function of good bacteria in the gut?

• Attack the immune system

• Prevent tumor formation

• Cause diseases

• Produce vitamins

What is the ratio of bacterial cells to human cells in the body?

• 1:1

• 10:1

• 2:1

• 5:1

Where is the DNA located in a bacterial cell?

• In the nucleus

• In the cytoplasm

• In the ribosome

• In the flagellum

What is the function of plasmid DNA in bacteria?

• Form small loops and carry extra information

• Carry most of the genetic information

• Involved in protein synthesis

• Enable the bacteria to move

What is the role of ribosome in a bacterial cell?

• Carry extra information

• Involved in protein synthesis

• Enable the bacteria to move

• Attach to hosts and surfaces

What is the function of pili in bacteria?

• Attach to hosts and surfaces

• Carry extra information

• Enable the bacteria to move

• Involved in protein synthesis

What is the main function of the cell wall in bacteria?

• Protect from physical damage

• Involved in protein synthesis

• Enable the bacteria to move

• Attach to hosts and surfaces

What is the role of flagellum in bacteria?

• Carry extra information

• Attach to hosts and surfaces

• Involved in protein synthesis

• Enable the bacteria to move

Where are bacteria found?

• Only in human body

• Only in specific regions

• Only in water bodies

• Practically everywhere on earth