(3.2.1.2) prokaryotic cells

Question 1

compare prokaryotic and eukaryotic cells.

Answer 1

1. prokaryotic cells is much smaller than eukaryotic cells
2. prokaryotic cell has a murein cell wall but eukaryotic cell has a cellulose cell wall
3. prokaryotic cells lacks membrane-bound organelles but eukaryotic cell has them
4. prokaryotic have 70S ribosomes whereas eukaryotic have 80S ribosomes
5. prokaryotic DNA is circular and floating free in cytoplasm but eukaryotic DNA is linear and enclosed in a nucleus
6. prokaryotic DNA is ‘naked’ whereas human DNA is bound to histones/proteins

Question 2

what are some occasional features of a prokaryotic cell?

Answer 2

• can have plasmids which are circular loops of DNA
• can have a capsule surrounding cell wall which helps agglutination and adds protection
• can have a flagella to aid in movement