Draw a neat labelled diagram of cell and explain its structure and function.
Answers
Answer:Cells are the structural, functional and biological units of all living beings. A cell can replicate itself independently. Hence, they are referred to as the building blocks of life.
Each cell contains a cytoplasm which is enclosed by a membrane and contains several biomolecules like proteins, nucleic acids, etc. Moreover, cellular structures called cell organelles are suspended in the cytoplasm.
What is a Cell?
A cell is the structural and fundamental unit of life. The study of cells from its basic structure to the functions of every cell organelle is called Cell Biology. Robert Hooke was the first Biologist who discovered cells.
All organisms are made up of cells. They may be made up of a single cell (unicellular), or many cells (multicellular). Mycoplasmas are the smallest known cells. Cells are the building blocks of all living beings. They provide structure to the body and convert the nutrients taken from the food into energy.
Cells are complex and their components perform every function in a living being. They are of different shapes and sizes, pretty much like bricks of the buildings. Our body is made up of cells of different shapes and sizes.
Cells are the lowest level of organization in every life form. From organism to organism, the count of cells may vary. Humans have the number of cells compared to that of bacteria.
Cells comprise several cell organelles that perform specialized functions to carry out life processes. Every organelle has a specific structure. The hereditary material of the organisms is also present in the cells.
Discovery of Cells
Discovery of cells is one of the remarkable advancements in the field of science. It helped us know that all the organisms are made up of cells and these cells help in carrying out various life processes. The structure and functions of cells helped us to understand life in a better way.
Who discovered cells?
The cells were discovered by Robert Hooke and Anton Van Leeuwenhoek in the 1660s. Robert Hooke observed a piece of cork under a compound microscope and noticed minute structures that reminded him of small rooms. He named these rooms as cells. But the cells he observed were dead.
Later Anton Van Leeuwenhoek observed living things under the microscope and observed minute parts which were named as animalcules since they resembled animals.
Characteristics of Cells
Following are the various important characteristics of cells:
Cells provide structure and support to the body of an organism.
The cell interior is organized into different special compartments or organelles surrounded by a separate membrane.
The nucleus(major organelle) holds genetic information necessary for reproduction and cell growth.
Every cell has one nucleus and other types of organelles exist in multiple copies in the cytoplasm.
Mitochondria, a double membrane-bound organelle is mainly responsible for the energy transactions vital for the survival of the cell.
Lysosomes digest unwanted materials in the cell.
Endoplasmic reticulum plays a significant role in the internal organization of the cell by synthesizing selective molecules and processing, directing and sorting them to their appropriate locations.
Explanation:
Answer:
Cells are the basic building blocks of all living things. Cells also contain the body's hereditary material and can make copies of themselves. Cells have many parts, each with a different function. Some of these parts, called organelles, are specialized structures that perform certain tasks within the cell.
