Foundations in Biology Module 2.6 Prokaryotic and eukaryotic cells

Question 1

What is the size of prokaryotic cells

Answer 1

0.1-10um

Question 2

What is the size of eukaryotic cells

Answer 2

10 -100um

Question 3

Define extremophiles

Answer 3

Cells that adapted to living in extreme conditions

Question 4

Where can extremophiles be found

Answer 4

• Salt lakes
• human digestive system
• soil
• hydrothermal vents

Question 5

Describe the DNA found in prokaryotic cells

Answer 5

Circular DNA - a chromosome which is super coiled making it more compact which is free floating in the cytoplasm

Question 6

What is the size of ribosomes in a prokaryotic cell

Answer 6

70S

Question 7

What is the size of ribosomes in a eukaryotic cell

Answer 7

80S

Question 8

What is the cell wall of a prokaryotic cell made up of

Answer 8

Peptidoglycan/ murein which is a complex polymer from amino acids and sugars

Question 9

What is the difference in the flagella of a prokaryotic cell to one of a eukaryotic cell

Answer 9

It is thinner
Doesnt consist of the 9+2 arrangement
Chemiosmosis supplies the flagellum with the energy to rotate the filament its composed of whereas in eukaryotic cells the energy is ATP

Question 10

How is the flagella attached to the bacterium cell wall

Answer 10

The basal body

Question 11

How is the flagella rotated

Answer 11

Molecular motor