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प्रश्न
Cell is the basic unit of life. Discuss in brief.
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उत्तर
- The cell is the basic structural and functional building block of all life since, without cells, there could be no living thing. Every life starts off as a single cell.Either a single cell (unicellular) or several cells (multicellular) make up an organism.
- While each group of cells in a multicellular creature is specialised for a particular function, a single cell in a unicellular organism is capable of autonomous existence and may carry out all necessary life processes.
- Cells are the units of life that divide to create new ones, and these cells always come from the division of pre-existing ones.
- Due to the totipotency of cells, a single cell can develop into an entire creature. A cell is the fundamental building block of life since the actions of an organism are the culmination of the activities of its cells.
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संबंधित प्रश्न
Indicate whether the following statements are True (T) or False (F).
Amoeba has irregular shape. (T / F)
Assertion (A): Tissue is a group of dissimilar cells.
Reason (R): Muscle is made up of Muscle cell.
On the lines given below, write about what you have learned from the activities done in this lesson.
Let me tell you about some of the important things I’ve learned about cells. First, I’ll start with…______
______ cells are specialised cells that can be transformed into any kind of cells.
Nowadays an ______ microscope is used to magnify and observe the cells.
How do you distinguish between living and dead cells?
Name the largest Angiosperm cell
Name the organelle without membrane.
Which of the following can be made into crystal?
Which of these options are not a function of Ribosomes?
- It helps in manufacture of protein molecules
- It helps in manufacture of enzymes
- It helps in manufacture of hormones
- It helps in manufacture of starch molecules
Do you agree that “A cell is a building unit of an organism”. If yes, explain why?
We eat food composed of all the nutrients like carbohydrates, proteins, fats, vitamins, minerals, and water. After digestion, these are absorbed in the form of glucose, aminoacids, fatty acids, glycerol etc. What mechanisms are involved in absorption of digested food and water?
Name the organelles which show the analogy written as under
Power house of the cell——
Which of the following is not a cell?
______ is the largest organelle.
The smallest cell in the human body is ______.
What structural and functional attributes must a cell have to be called a living cell?
