Prokaryotic Cell and Eukaryotic Cell
| Prokaryotic cell | Eukaryotic cell |
|---|---|
| Cell size is generally small (1 - 10 \(\mu\)m). | Cell is generally large (5 - 100 \(\mu\)m). |
| Nuclear region is called nucleoid and is not surrounded by a nuclear membrane. | Nuclear material is surrounded by a nuclear membrane. |
| Only a single chromosome is present. | More than one chromosome is present. |
| Nucleolus is absent. | Nucleolus is present. |
| Membrane bound cell organelles are absent. | Membrane bound cell organelles. |
| Cell division by fission or budding (no mitosis). | Cell division mitotic or meiotic. |
(i) The kind of person the doctor is (money, possessions)
(ii) The kind of person he wants to be (appearance, ambition)
ABCD is a quadrilateral in which AD = BC and ∠ DAB = ∠ CBA (see Fig. 7.17). Prove that
(i) ∆ ABD ≅ ∆ BAC
(ii) BD = AC
(iii) ∠ ABD = ∠ BAC.

Prokaryotic cells are single-celled microorganisms known to be the earliest on earth. Prokaryotes include Bacteria and Archaea. The photosynthetic prokaryotes include cyanobacteria that perform photosynthesis.
A prokaryotic cell contains a single membrane and therefore, all the reactions occur within the cytoplasm. They can be free-living or parasites.
Prokaryotic cells have different characteristic features such as: