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Cell- The Fundamental Unit of Life- 1 Video Lecture | Crash Course for Class 9 (English)
FAQs on Cell- The Fundamental Unit of Life- 1 Video Lecture - Crash Course for Class 9 (English)
| 1. What is a cell? |  |
Ans. A cell is the fundamental unit of life, which is the smallest structural and functional unit of all living organisms. It is responsible for carrying out various processes necessary for the survival and functioning of an organism.
| 2. What are the main components of a cell? | |
Ans. A cell is composed of various components, including the cell membrane, cytoplasm, and nucleus. The cell membrane acts as a barrier and controls the movement of substances in and out of the cell. The cytoplasm is a jelly-like substance that houses various organelles and carries out metabolic activities. The nucleus contains genetic material and controls the cell's activities.
| 3. How are cells classified? | |
Ans. Cells can be classified into two main categories: prokaryotic cells and eukaryotic cells. Prokaryotic cells are simpler and do not have a nucleus or membrane-bound organelles. They are found in bacteria and archaea. Eukaryotic cells, on the other hand, have a true nucleus and membrane-bound organelles. They are found in plants, animals, fungi, and protists.
| 4. What are organelles? | |
Ans. Organelles are specialized structures within a cell that perform specific functions. They are like small organs within a cell. Examples of organelles include mitochondria (responsible for energy production), endoplasmic reticulum (involved in protein synthesis), Golgi apparatus (involved in processing and packaging of proteins), and lysosomes (involved in the breakdown of waste materials).
| 5. How do cells reproduce? | |
Ans. Cells reproduce through a process called cell division. In eukaryotic cells, cell division occurs through mitosis, where a single cell divides into two identical daughter cells. This process is involved in growth, repair, and asexual reproduction. In prokaryotic cells, cell division occurs through binary fission, where the cell replicates its genetic material and divides into two identical daughter cells.
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