Prokaryotes

Question 1

What is a cell wall in a prokaryote made from and what is its purpose

Answer 1

Made from peptidoglycan(murein)
The cell wall prevents cell from bursting if it takes on to much water via osmosis

Question 2

What is a plant cell wall made from

Answer 2

Cellulose

Question 3

What is a fungi cell wall made from

Answer 3

Chitin

Question 4

What is the nucleoid

Answer 4

The region within the cytoplasm of a prokaryotic cell where dna is found

Question 5

What are the features of circular dna

Answer 5

Float free in the cytoplasm
Not associated with histones
Does not contain introns ( non coding sections of dna )

Question 6

Where are the plasmids in a cell

Answer 6

They are floating free in the cytoplasm

Question 7

What can plasmids do

Answer 7

Code for properties such as antibiotic resistance
Can be transferred from one prokaryote to another

Question 8

What is a flagellum and what is its purpose

Answer 8

Is a long projection
A hair like structure that rotates to propel the prokaryote facilitating directional movement so they can find food

Question 9

What is the purpose of a slime capsule and what are its properties

Answer 9

An extra layer on top of the cell wall, it prevents the cell from drying out
Makes the cells slippery eg bacteria can’t be engulfed by white blood cells

Question 10

What happens in the ribosomes

Answer 10

mRNA is translated into proteins

Question 11

What is the difference between ribosomes in eukaryotes and prokaryotes

Answer 11

P=70s ribosomes
E=80s ribosomes