2.6 Prokatoyes And Ukaroytic Cells

Question 1

Prokaryotes

Answer 1

Single organism without a nucleus and do not have membrane bound organelles bacteria

Question 2

Eukaryote

Answer 2

Cells with a nucleus and other membrane - bound organelles

Question 3

DNA in prokaryotes

Answer 3

Only have one molecule of DNA , a chromosome, which is supercoiled to make it more compact.
Often grouped into operons meaning a number of genes are switched on or off at the same time

Question 4

Ribosomes in prokaryotes

Answer 4

Smaller than those in eukaryotic cells.

Their size is determined by the rate at which they settle in solution

Question 5

Prokaryotic cell wall

Answer 5

Prokaryotic cells have a cell wall made from peptidogylcan

Formed by amino acids and sugars

Question 6

Flagella in prokaryotes

Answer 6

Thinner than in eukaryotes
No 9+2 arrangement
Energy is supplied by chemiosmosis not ATP

Question 7

structures that are in eukaryotes that are not in prokaryotes

Answer 7

Membrane enclosed organisms: chloroplasts 
Lysosomes
Mitochondria
Golgi apparatus 
Endoplasmic reticulum

Question 8

Difference in how genetic material is stored

Answer 8

In prokaryotes the dna is free in the cytoplasm in a single strand
In eukaryotes it is a supercolied chromosome compartmentalised inside the nucleus

Question 9

Difference in the cell wall presence in prokaryotes and eukaryotes

Answer 9

Cell wall of prokaryotes is made from peptidoglycan

Plant cells are the only eukaryotes to have a cell wall, make from cellulose.

Question 10

Cellular component found in animals that are not found in plants

Answer 10

Centrioles and lysosomes