2.1 Prokaryotic Cells Flashcards Preview

A Level Biology > 2.1 Prokaryotic Cells > Flashcards

Flashcards in 2.1 Prokaryotic Cells Deck (11)
Loading flashcards...
1
Q

Do prokaryotic cells contain a nucleus?

A

No they contain circular DNA that floats freely in the cytoplasm

2
Q

What other structures are found in prokaryotic cells?

A
  • flagellum
  • plasma membrane
  • cell wall
  • plasmids
  • ribosomes
  • Genetic material (DNA)
  • mesosome
  • capsule
3
Q

What is a plasmid?

A

Rings of DNA floating freely in the cytoplasm

4
Q

How does the cell wall differ from a eukaryotic cell?

A

It is not made of cellulose or chitin

5
Q

How does flagella in prokaryotic cells differ from eukaryotic?

A

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

6
Q

How do the ribosomes differ?

A

They are a lot smaller (70s)

7
Q

Give an example of a prokaryotic cell:

A

Bacteria cell such as cholera

8
Q

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

A

No

An electron microscope is necessary

9
Q

What is a mesosome?

A

The site of respiration

10
Q

What is a capsule?

A

A protective device (slime layer)

11
Q

How big are prokaryotic cells?

A

Extremely small cells ( less than 2 micrometers in diameter)

Decks in A Level Biology Class (102):