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Page 1 Cell -The Unit of Life Flash cards Page 2 Cell -The Unit of Life Flash cards cell is the fundamental strucutural and functional unit of all living organism. Page 3 Cell -The Unit of Life Flash cards cell is the fundamental strucutural and functional unit of all living organism. Anton Von Leeuwenhoek first saw and described a live cell and Robert Brown discovered the nucleus. Schleiden and Schwann together formulated the cell theory. ‘Omnis cellula-e-cellula’ was explained by Rudolf Virchow. Page 4 Cell -The Unit of Life Flash cards cell is the fundamental strucutural and functional unit of all living organism. Anton Von Leeuwenhoek first saw and described a live cell and Robert Brown discovered the nucleus. Schleiden and Schwann together formulated the cell theory. ‘Omnis cellula-e-cellula’ was explained by Rudolf Virchow. Cell theory as understood today is: (i) all living organisms are composed of cells and products of cells. (ii) all cells arise from pre-existing cells. Page 5 Cell -The Unit of Life Flash cards cell is the fundamental strucutural and functional unit of all living organism. Anton Von Leeuwenhoek first saw and described a live cell and Robert Brown discovered the nucleus. Schleiden and Schwann together formulated the cell theory. ‘Omnis cellula-e-cellula’ was explained by Rudolf Virchow. Cell theory as understood today is: (i) all living organisms are composed of cells and products of cells. (ii) all cells arise from pre-existing cells. Cells that have membrane bound nuclei are called eukaryotic whereas cells that lack a membrane bound nucleus are called prokaryotic. No organelles, like the ones in eukaryotes, are found in prokaryotic cells except for ribosomes.Read More
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FAQs on Flashcards: Cell - The Unit of Life - Biology Class 11 - 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 it carries out all the necessary functions to sustain life, such as metabolism, reproduction, and response to stimuli. Cells are capable of independent existence and are the building blocks from which all living organisms are formed.
| 2. What are the different types of cells found in living organisms? | |
Ans. There are two main types of cells found in living organisms: prokaryotic cells and eukaryotic cells. Prokaryotic cells, found in bacteria and archaea, lack a nucleus and other membrane-bound organelles. Eukaryotic cells, found in plants, animals, fungi, and protists, have a true nucleus and various membrane-bound organelles.
| 3. How do cells obtain energy for their activities? | |
Ans. Cells obtain energy through a process called cellular respiration. During cellular respiration, cells convert glucose and oxygen into carbon dioxide, water, and adenosine triphosphate (ATP), which is the main energy currency of the cell. ATP provides the necessary energy for various cellular activities, including metabolism, movement, and synthesis of molecules.
| 4. What are the major organelles found in eukaryotic cells and their functions? | |
Ans. Eukaryotic cells contain several organelles, each with specific functions. Some of the major organelles include the nucleus (contains genetic material), mitochondria (produces energy through cellular respiration), endoplasmic reticulum (involved in protein synthesis and lipid metabolism), Golgi apparatus (modifies, sorts, and packages proteins), and lysosomes (contain digestive enzymes for waste removal).
| 5. How are cells involved in the process of growth and development? | |
Ans. Cells play a crucial role in the process of growth and development. Through cell division, cells multiply and increase in number, leading to growth and the formation of new tissues and organs. Additionally, cells differentiate and specialize into specific cell types, allowing for the development of complex organisms with different functions and structures.
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