Bacteria

Question 1

What does a bacterial cell always contain?

Answer 1

• circular DNA
• ribosomes
• cell wall
• cytoplasm
• cell surface membrane

Question 2

What does a bacterial cell sometimes contain?

Answer 2

• In folding of cell surface membrane
• flagellum
• capsule
• plasmid
• pili

Question 3

What is the function of the circular DNA?

Answer 3

Contains genetic material

Question 4

What is the function of the ribosomes?

Answer 4

Site of protein synthesis

Question 5

What is the function of the cell wall?

Answer 5

Provide strength and structure

Question 6

What is the function of the cytoplasm?

Answer 6

Where most chemical reactions take place

Question 7

What is the function of the cell surface membrane?

Answer 7

Regulates transport of materials entering and exiting the cell

Question 8

What is the function of the in folding of cell surface membrane?

Answer 8

May allow photosynthesis to carry out nitrogen fixation

Question 9

What is the function of the capsule?

Answer 9

Protection

Question 10

What is the function of the flagellum?

Answer 10

Motion

Question 11

What is the function of the plasmid?

Answer 11

Small circle of DNA

Question 12

What is the function of pili?

Answer 12

For attachment to other cells or surfaces (involved in sexual reproduction)

Question 13

Describe the process of binary fission

Answer 13

1. Circular DNA and plasmids replicate
2. Cell elongates, separating the 2 DNA loops
3. Cytoplasm divides to produce 2 daughter cells each with a single copy of circular DNA and variable number of copies of plasmids