2.6 Prokaryotic Cell Structure

Question 1

What is another name for prokaryotic cells?

Answer 1

Extremophiles

Question 2

What is the main domain of prokaryotic cells?

Answer 2

Archaea

Question 3

What is the cell type of prokaryotic cells?

Answer 3

Unicellular

Question 4

Name all the organelles in prokaryotic cells.

Answer 4

DNA, ribosomes, cell wall, flagella

Question 5

How is DNA packaged differently in prokaryotic cells compared to eukaryotic cells?

Answer 5

Prokaryotic generally only have one molecule of DNA, a chromosome.

Question 6

How are ribosomes different in prokaryotic cells than eukaryotic cells?

Answer 6

Ribosomes in prokaryotic cells are smaller. In eukaryotic cells, ribosomes are referred as 80s and in prokaryotic cells they are referred as 70s.

Question 7

What is the cell wall in prokaryotic cells made of?

Answer 7

Peptidoglycan (aka murein)

Question 8

Describe flagella in prokaryotic cells.

Answer 8

Thin, does not have the 9+2 arrangement, energy to rotate the filament is supplied from the process of chemiomosis.

Question 9

Describe how flagella is attached to the prokaryotic cell.

Answer 9

By a basal body and is rotated by a molecular motor.
Basal body attaches the filament comprising the flagellum to the cell-surface membrane of a bacterium. Molecular motor causes the hook to rotate giving the filament a whip-like movement (propels the cell)