C3 Prokaryotic n Eukaryotic Cell

Question 1

What organelle is NOT in prokaryotic cells?

Answer 1

Nucleus, ER, Golgi apparatus, mitochondria.

Question 2

The three characteristics of a prokaryotic cell.

Answer 2

1. Cell bounded by a plasma membrane.
2. The interior of the cell is the cytoplasm.
3. No membrane-enclosed organelles.

Question 3

The external structure of a prokaryote.

Answer 3

Glycocalyx : outer coating, consisting of a capsule or a slime layer.
Cell wall : Rigid structure outside the plasma membrane.
Flagella : Locomotion organelle of some prokaryotes.
Fimbriae : Attachment structure on surface of some prokaryotes.

Question 4

What are the internal structures of prokaryotic cell?

Answer 4

1. Contains chromosome, carries genetic DNA.
2. DNA confined in a nucleoid region, not enclosed by membrane.
3. Contains ribosome.

Question 5

The four characteristics of a eukaryotic cell.

Answer 5

1. DNA in a nucleus.
2. Cytoplasm between the plasma membrane and the nucleus.
3. Membrane-bound organelles.
4. Size larger than prokaryotic cells.

Question 6

7 differences between prokaryotic cell and eukaryotic cell.

Answer 6

1. small size, large size.
2. DNA not associated with histones, DNA associated with histones.
3. DNA in a nucleoid, DNA in a nucleus.
4. DNA not enclosed by nuclear envelope, DNA enclosed by nuclear envelope.
5. DNA molecule is circular, DNA molecule is linear.
6. Absence of membrane bound organelles, presence of membrane bound organelles.
7. Small ribosomes, large ribosomes.