3.6- Prokaryotic cells and viruses

?
  • Created by: Megan2413
  • Created on: 20-11-16 17:39
What eight features does a bacterial cell contain?
- Cytoplasm - Cell wall - Circular DNA - Plasmids - Ribosomes - Flagellum - Cell-surface membrane - Capsule
1 of 24
What is the function of the flagellum?
It is used for locomotion
2 of 24
Do all prokaryotes have a flagellum?
No
3 of 24
Can prokaryotes have more than one flagellum?
Yes
4 of 24
What type of DNA does a bacterial cell contain?
Circular DNA
5 of 24
Where is the DNA found?
Floating free in the cytoplasm
6 of 24
What other form is DNA found as in bacterial cells?
Plasmids
7 of 24
What are plasmids?
Small circular loops of DNA
8 of 24
What type of genetic information do plasmids contain?
They possess genes that aid the survival of bacteria in adverse conditions ) e.g. produces enzymes that break down anti-biotics
9 of 24
Are plasmids always present in prokaryotic cells?
No
10 of 24
What is the capsule made up of in a bacterial cell?
Secreted-slime
11 of 24
What two functions does a capsule in a bacterial cell have?
It protects them from other cells (such as cells from the immune system) and helps groups of bacterai to stick together for further protection
12 of 24
What does the cell wall provide in a bacterial cell?
It provides support and prevents the cell from changing shape
13 of 24
What is the cell wall of a bacterial cell made of?
Murein
14 of 24
What type of polymer is murein?
A glycoprotein
15 of 24
How is the cell membrane of a bacterial cell similar to that of a eukaryotic cell?
It is made up of mainly lipids and proteins
16 of 24
What does the cytoplasm of prokaryotic cells not contain?
Membrane-bound organelles
17 of 24
What is the difference between ribosomes found in eukaryotic cells and prokaryotic cells?
Ribosomes found in prokaryotic cells are smaller (70s) than in eukaryotic cells (80s)
18 of 24
How do most prokaryotic cells replicate?
By binary fission
19 of 24
What are the four main components of a virus?
- Capsid - Attachment protein - Genetic material - Reverse transcriptase
20 of 24
If the virus was a HIV virus, what other components would it have?
- Lipid envelope - Matrix
21 of 24
What is the capsid and what is its function?
It is a protein coat that encompasses the genetic material
22 of 24
How do viruses reproduce?
They use their attachment proteins to bind to a complementary receptor proteins on the surface of a host cell and inject their genetic material into the host cell. Then the host cells uses its enzymes, ribosomes and other organelles to (pto)
23 of 24
Card 26 continuation
replicate the viral particle using the injected genetic material
24 of 24

Other cards in this set

Card 2

Front

What is the function of the flagellum?

Back

It is used for locomotion

Card 3

Front

Do all prokaryotes have a flagellum?

Back

Preview of the front of card 3

Card 4

Front

Can prokaryotes have more than one flagellum?

Back

Preview of the front of card 4

Card 5

Front

What type of DNA does a bacterial cell contain?

Back

Preview of the front of card 5
View more cards

Comments

Ashiiix

Report

what does pto stand for in flashcard 23?

Similar Biology resources:

See all Biology resources »See all Cell structure resources »