2.1 Prokaryotic Cells Flashcards Preview

A Level Biology > 2.1 Prokaryotic Cells > Flashcards

Flashcards in 2.1 Prokaryotic Cells Deck (11):
1

Do prokaryotic cells contain a nucleus?

No they contain circular DNA that floats freely in the cytoplasm

2

What other structures are found in prokaryotic cells?

• flagellum
• plasma membrane
• cell wall
• plasmids
• ribosomes
• Genetic material (DNA)
• mesosome
• capsule

3

What is a plasmid?

Rings of DNA floating freely in the cytoplasm

4

How does the cell wall differ from a eukaryotic cell?

It is not made of cellulose or chitin

5

How does flagella in prokaryotic cells differ from eukaryotic?

It is made of the protein flagellum and us arranged in a helix

6

How do the ribosomes differ?

They are a lot smaller (70s)

7

Give an example of a prokaryotic cell:

Bacteria cell such as cholera

8

Can normal microscopes be used to see the internal structure of prokaryotic cells?

No
An electron microscope is necessary

9

What is a mesosome?

The site of respiration

10

What is a capsule?

A protective device (slime layer)

11

How big are prokaryotic cells?

Extremely small cells ( less than 2 micrometers in diameter)

Decks in A Level Biology Class (102):