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Practice Questions | Cell - The Unit of Life Video Lecture - NEET
FAQs on Practice Questions - Cell - The Unit of Life Video Lecture - NEET
| 1. What is a cell and why is it considered the unit of life? |  |
Ans. A cell is the basic structural and functional unit of all living organisms. It is considered the unit of life because all living organisms are composed of cells, and cells carry out all the necessary functions to sustain life, such as metabolism, reproduction, and response to stimuli.
| 2. How are prokaryotic cells different from eukaryotic cells? | |
Ans. Prokaryotic cells are simpler and smaller in size compared to eukaryotic cells. Prokaryotic cells lack a true nucleus and membrane-bound organelles, while eukaryotic cells have a defined nucleus and various membrane-bound organelles.
| 3. What are the different organelles present in a typical eukaryotic cell? | |
Ans. A typical eukaryotic cell contains various organelles, including the nucleus, mitochondria, endoplasmic reticulum, Golgi apparatus, lysosomes, and peroxisomes. Each organelle has a specific function and contributes to the overall functioning of the cell.
| 4. How does a cell maintain homeostasis? | |
Ans. Cells maintain homeostasis by regulating their internal environment to ensure a stable and optimal condition for normal cellular functions. This is achieved through processes such as osmosis, active transport, and feedback mechanisms that control the balance of ions, nutrients, and waste products within the cell.
| 5. How does the structure of a cell relate to its function? | |
Ans. The structure of a cell is directly related to its function. For example, the presence of specialized organelles, such as mitochondria, allows the cell to produce energy efficiently. The cell membrane controls the entry and exit of substances, enabling the cell to maintain internal balance. Different types of cells have unique structures that enable them to carry out specific functions, such as nerve cells with long extensions for transmitting signals or muscle cells with contractile proteins for movement.
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Dec 23, 2024 Last updated |
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