Why do 'cells are the basic structural units of living organisms '?

Question

Accepted Answer

Cells are the basic structural units of living organisms because all organism are composed of cell. The cells are the building block of life.The smallest functional unit of any part is a cell.

Answer

Answer

Becoz Body can't be imagined without cell... Basics  are required to Form a body..i.e. Cell.. The Basic unit..

Answer

Cells are basic structural unit of life bcz no other entity other than can function solely .
hence they are considered as the building blocks

Answer

Introduction:
Cells are the fundamental building blocks of all living organisms, from simple single-celled organisms to complex multicellular organisms like humans. They are the basic structural and functional units of life. The concept that cells are the basic units of life was first proposed by Matthias Schleiden and Theodor Schwann in the 19th century. This concept, known as the cell theory, revolutionized our understanding of biology and laid the foundation for modern cell biology.

Key Points:

The Cell Theory:
The cell theory states that:

1. All living organisms are composed of one or more cells.
2. The cell is the basic unit of structure and function in all living organisms.
3. Cells arise from pre-existing cells through cell division.

Structure and Function:
Cells have both a specific structure and function that allow them to carry out the essential processes of life. Here are some key points about cell structure and function:

1. Cell Membrane: The cell membrane acts as a selective barrier, allowing certain substances to enter or leave the cell. It also maintains the internal environment of the cell.

2. Genetic Material: Cells contain genetic material in the form of DNA or RNA. This genetic material carries the instructions for the cell's structure and function.

3. Organelles: Cells contain various organelles, such as mitochondria, ribosomes, and the endoplasmic reticulum, which perform specific functions necessary for the cell's survival and activity.

4. Metabolism: Cells carry out metabolic processes, including energy production, nutrient uptake, and waste removal. These processes are essential for the cell's survival and growth.

5. Reproduction: Cells have the ability to reproduce and create new cells through cell division. This allows for growth, repair, and the production of offspring.

Importance of Cells:
Cells are the foundation of life and are essential for the functioning of all living organisms. Here are some reasons why cells are so important:

1. Organization: Cells provide the structural organization necessary for the formation of tissues, organs, and entire organisms.

2. Specialization: Different types of cells in multicellular organisms specialize in specific functions. This cellular specialization allows for the division of labor and the efficient functioning of complex organisms.

3. Homeostasis: Cells play a crucial role in maintaining the internal environment of an organism by regulating various physiological processes.

4. Adaptation: Cells can adapt to changing environmental conditions to ensure the survival of the organism.

5. Disease and Health: Many diseases are caused by abnormalities in cell structure or function. Understanding cells and their behavior is crucial for understanding and treating diseases.

Conclusion:
Cells are the basic structural units of living organisms because they have specific structures and functions that enable them to carry out the essential processes of life. The cell theory, with its three fundamental principles, provides the framework for our understanding of cells. Cells are not only the building blocks of life but also the key to understanding and advancing our knowledge of biology and medicine.

Similar Class 8 Doubts

Cells are the basic structural units of organisms. Explain?

Which of these is not asserted in the cell theory?

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Which of the following statements is the correct definition of a cell?

It is structural unit of every living body

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