2.1.1: Ultrastructure Of Cells

Question 1

What are prokaryotic cells?

Answer 1

Bacterial cells are the key example of prokaryotic cells

Question 2

What is a key difference between prokaryotic and eukaryotic cells?

Answer 2

Prokaryotic cells do not have a nucleus

Question 3

What is found in the cytoplasm of prokaryotic cells?

Answer 3

A single, circular molecule of DNA that is not associated with histone proteins

Question 4

What is the size of ribosomes in prokaryotic cells?

Answer 4

70S

Question 5

What is the composition of the cell wall in prokaryotic cells?

Answer 5

Made of a glycoprotein called murein

Question 6

What additional features can some bacteria contain?

Answer 6

• Plasmids
• Capsule
• Flagella

Question 7

What are plasmids?

Answer 7

Rings of DNA containing genes linked to survival such as antibiotic resistance

Question 8

What is the function of the capsule in bacteria?

Answer 8

To provide protection from other cells and help bacteria stick together

Question 9

What is the purpose of flagella in bacteria?

Answer 9

Used for locomotion

Question 10

Fill in the blank: Prokaryotic cells do not contain _______.

Answer 10

membrane-bound organelles

Question 11

True or False: Prokaryotic cells have ribosomes that are larger than those in eukaryotic cells.

Answer 11

False