3.2.1.2 Structure of prokaryotic cells and viruses

Question 1

How do prokaryotes differ to eukaryotes?

Answer 1

• Much smaller
• No membrane-bound organelles
• No nucleus

Question 2

What are plasmids?

Answer 2

Small loops of DNA that aren’t part of the main circular DNA moleucle

Question 3

How do plasmids work?

Answer 3

They can contain DNA for antibiotic resitance which can be transfered between prokaryotes

Question 4

What is a capsule?

Answer 4

Some have capsules
Protects bacteria from drying out

Question 5

What are flagellums?

Answer 5

Long, tail-like structure that rotate to propelle the cell

Question 6

What are bacterial cell wall made from?

Answer 6

Murein

Question 7

What are fungal cell walls made from?

Answer 7

Chitin

Question 8

Why are virues call acellular and non-living?

Answer 8

Acellular since they consits of one particle
Non-living since they don’t complete any life processes

Question 9

What are the main 3 structure of a virus?

Answer 9

Caspid
Attachment Proteins
Core of genetic material

Question 10

What is the function of a caspid?

Answer 10

The protein coat which surrounds the virus

Question 11

What is the function of an attachment protein?

Answer 11

Allows the virus to attach itsef to a suitable host cell