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NEET UG 2026 » NEET UG Study Material » Biology » Cell And Tissue
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Cell And Tissue

Cells are the smallest structural and functional unit of an organism, and they are normally quite small. Tissues are many types of materials composed of specialised cells and their byproducts.

Table of Content
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A living organism is made up of cells and tissues. Both are structurally present and equally important in all living organisms. Cells are a necessary component of tissues; without them, there would be no problems, and cells make up the various types of tissues found in all multicellular creatures. Every living thing has at least one cell.

Cell

A cell is found in every living thing. It can be found in all living organisms. No organism can exist on this planet unless it has a cell. The microbe is life’s smallest structural and functional unit. As a result, cells are recognised as the fundamental unit of life.

These little cells regulate every bodily function.

There are two kinds of biological beings: unicellular organisms and multicellular creatures.

Some species are unicellular organisms, which means they contain just one cell. Despite the fact that they are capable of performing all of life’s activities. Amoeba, algae, bacteria, fungi, Protista, and other unicellular organisms are good examples. Multicellular organisms, on the other hand, are made up of many cell types. These creatures carry out certain activities. Animals, plants, humans, and birds are the best examples of multicellular animals.

The presence or absence of the nucleus determines the cell type. The prokaryotic cell and the eukaryotic cell are two distinct types of cells.

Cellular Characteristics

The cells are made up of the following important features as follows-:

1.An organism’s cells manage the structure and support of the body.

2.The cell’s interior is separated into organelles. These organelles are surrounded by their own membrane.

3.The nucleus is in charge of the cell’s reproduction and growth. The nucleus is a fundamental organelle that contains genetic information required for cell growth and reproduction.

4.Every cell has a nucleus and membrane-bound organelles in its cytoplasm.

5.The mitochondria, a double membrane-bound organelle, is where the energy required for cell survival is exchanged.

6.Lysosomes are in charge of the digestion of foreign substances in the cell.

7.The endoplasmic reticulum is required for the creation of some compounds. It also aids in the processing, guiding, and sorting of them to their respective places within the cell’s internal hierarchy.

Various Cell Types

Cells come in a range of forms and sizes, depending on the tasks they perform. It is divided into two categories based on its cellular structure:

1.Prokaryotes 

2.Eukaryotes

Tissue

 A bunch of similar cells .These cells are all equally responsible for executing a specific task. The similarities are described using structures and functions. The tissues can be found in both plants and mammals.

Types of Plant Tissues

There are two kinds of plant tissues:

1.Meristematic Tissue is a form of tissue that has a meristematic structure.

2.Permanent Tissue-;that will last a lifetime

 Animal Tissues

The collection of tissues associated with structural units accomplishes the usual function of organs. The primary distinction between tissue types is defined by the type of organism. It is further subdivided into the following categories:

1.Simple Permanent Tissue

2. Complex permanent Tissue

3. Special or secretory tissue

Difference between Cell And Tissue

Character

Cell

Tissue

Definition

Cells are defined as an organism’s smallest structural and functional unit, which is often tiny

Tissues are several sorts of material made up of specialised cells and their byproducts

Visibility

Cells are extremely small.

Tissues are microscopic in nature.

Present

Cells can be found in both single-celled and multicellular organisms.

Multicellular creatures are the only ones that have tissues.

Types

The two cell kinds are eukaryotic cells and prokaryotic cells

Epithelial tissue, connective tissue, muscular tissue, and nervous tissue are the four primary forms of tissue.

Comprises

The nucleus, mitochondria, lysosomes, Golgi apparatus, and other cellular organelles make up the cells.

Tissues are made up of similar cell types that are each specialised for a specific function.

Development

It is formed by cell divisions in mitosis and meiosis

Regeneration and fibrosis are used to repair it.

Function

Growth, metabolism, and reproduction are the three functions of cells.

Tissues serve a certain purpose

Conclusion

We conclude that  Tissues are collections of cells that perform duties that are beyond the capabilities of any one cell type. Healthy tissues require the right mix of cells, as well as cells that are orientated appropriately and divide at the right rate.

 
faq

Frequently asked questions

Get answers to the most common queries related to the NEET Examination Preparation.

How do cells and tissues interact with one another?

Ans-:In order to function in tissues and organs, cells must form connections that hold them together and allow them ...Read full

What is the importance of the relationship between cells, tissues, and organs?

Ans-:The components of a cell work together to form a system. Cells cooperate to produce tissues, organs, and organ ...Read full

What keeps cells together?

Ans-:In order to protect our organs, the cells in the tissue must build a barrier that is tight even at the molecula...Read full

How can a cell remain in contact with another cell within a tissue?

Ans-:Adhesive molecules assist cells within tissues to maintain touch with one another and with structures in the ex...Read full

Ans-:In order to function in tissues and organs, cells must form connections that hold them together and allow them to coordinate their actions. Furthermore, cells are linked to a network of fibres known as the extracellular matrix, which offers structural, metabolic, and growth support.

Ans-:The components of a cell work together to form a system. Cells cooperate to produce tissues, organs, and organ systems. Organ systems collaborate to suit the organism’s demands. This activity connects the functions supported by cell organelles and organs/organ systems.

Ans-:In order to protect our organs, the cells in the tissue must build a barrier that is tight even at the molecular level. This barrier is generated by a protein complex that “glue” all of the cells together with no gaps. All of the components required to form a durable barrier between cells are enriched by these droplets.

 

Ans-:Adhesive molecules assist cells within tissues to maintain touch with one another and with structures in the extracellular matrix. Integrins are a particularly significant class of sticky molecules. Integrins, however, are more than just mechanical links: they also relay messages to and from cells.

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