How is a prokaryotic cell different from a eukaryotic cell? - Science

Question

How is a prokaryotic cell different from a eukaryotic cell?

Answer

Feature	Prokaryotic Cell	Eukaryotic Cell
1. Size	Generally small (1-10 µm).	Generally large (5-100 µm).
2. Nuclear Region	Poorly defined (no nuclear membrane). Known as nucleoid.	Well defined and surrounded by a nuclear membrane.
3. Chromosomes	Single chromosome.	More than one chromosome.
4. Organelles	Membrane-bound cell organelles are absent.	Membrane-bound cell organelles are present.

Who discovered cells, and how?

Why is the cell called the structural and functional unit of life?

How do substances like CO₂ and water move in and out of the cell? Discuss.

Why is the plasma membrane called a selectively permeable membrane?

Fill in the gaps in the following table illustrating differences between prokaryotic and eukaryotic cells.

Can you name the two organelles we have studied that contain their own genetic material?

If the organisation of a cell is destroyed due to some physical or chemical influence, what will happen?

Why are lysosomes known as suicide bags?

Where are proteins synthesised inside the cell?

Make a comparison and write down ways in which plant cells are different from animal cells.

Subject: Science
Class: class 9
Chapter 5: The Fundamental Unit of Life
Medium: English Medium