prokaryotic cells

Question 1

Differences between eukaryotic cell and prokaryotic

Answer 1

-cytoplasm that lacks membrane-bound organelles
-smaller ribosomes
-no nucleus; instead they have a single circular DNA molecule
that is free in the cytoplasm and is not associated with
proteins
-a cell wall that contains murein, a glycoprotein.

Question 2

What is a virus

Answer 2

-Neither a prokaryote or eukaryote
-Acellular non-living particles
-Smaller than bacteria

Question 3

Function of a Capsule

Answer 3

-Prevents bacteria from dessicating (drying out)
-Protects bacteria against the hosts immune system

Question 4

How is a ribosome in a prokaryote different from the one in eukaryote

Answer 4

-They are smaller, 70s not 80s

Question 5

Structure of DNA

Answer 5

-Singular circular DNA molecule free in the cytoplasm which isnt protein bound

Question 6

What is a plasmid

Answer 6

-Small loops of DNA
-Can be shared between cells
-Ussualy contain useful genes e.g antibiotic resistance

Question 7

What is a cell wall made of

Answer 7

-Murein

Question 8

-Function of a flagellum

Answer 8

-Locomotion

Question 9

Function of mesosome

Answer 9

-Increased surface area for respiration

Question 10

What are the steps of Binary Fission

Answer 10

-replication of the circular DNA and of plasmids
-division of the cytoplasm to produce two daughter cells. each with a sinale cooy of the circular DNA and a variable number of copies of plasmids.