Ans. A cell is the basic structural and functional unit of all living organisms.

2. What are the two main types of cells?

Ans. The two main types of cells are prokaryotic cells (like bacteria) and eukaryotic cells (like plant and animal cells).

3. What are the different organelles found in a eukaryotic cell?

Ans. Some of the organelles found in a eukaryotic cell are the nucleus, mitochondria, endoplasmic reticulum, Golgi apparatus, lysosomes, and chloroplasts (in plant cells).

4. How do cells obtain energy for their functions?

Ans. Cells obtain energy through a process called cellular respiration, where they convert glucose into ATP (adenosine triphosphate) molecules that are used as energy currency.

5. How do cells communicate with each other?

Ans. Cells communicate with each other through chemical signals and receptors on their cell membranes, allowing for coordination of functions and responses to external stimuli.

MULTIPLE CHOICE QUESTION Try yourself: Which type of endoplasmic reticulum is involved in the production of proteins? A Rough endoplasmic reticulum (RER) B Smooth endoplasmic reticulum (SER) C Golgi apparatus D Mitochondria View Solution Correct Answer: A Hide Explanation ⌃ The rough endoplasmic reticulum (RER) is the type of ER that has ribosomes attached to its surface, where proteins are synthesized. Report a problem Cancel Report

Rough endoplasmic reticulum (RER)

Smooth endoplasmic reticulum (SER)

CBSE Class 9 > Class 9 Videos > Science Olympiad > Quick Revision: The Fundamental Unit of Life

Quick Revision The Fundamental Unit of Life Video Lecture - Science Olympiad

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Quick Revision The Fundamental Unit of Life Video Lecture - Science Olympiad

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