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. |
Length (in hours) | Number of lamps |
|---|---|
300 − 400 | 14 |
400 − 500 | 56 |
500 − 600 | 60 |
600 − 700 | 86 |
700 − 800 | 74 |
800 − 900 | 62 |
900 − 1000 | 48 |
(i) Represent the given information with the help of a histogram.
(ii) How many lamps have a lifetime of more than 700 hours?
Why was Santosh sent to the local school?
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: