What is Cell ?
The cell is the basic and fundamental unit of life. It is the smallest living thing capable of independent existence. A cell is made up of a nucleus that contains the cell’s DNA, a cytoplasm that contains many proteins and enzymes and a membrane enclosing the cell.
Many cells work together to form a group of cells that work together to form a group of cells that works together to form a group of cells that works together to form an organism. By working together, these cells can perform complex tasks.
The eukaryotic cell is different from the prokaryotic cell because the eukaryotic cell contains organelles that are enclosed within membranes
Cell theory is the concept that all living things are made up of cells. Scientists have come to believe this concept after examining a lot of microscopic pictures, and seeing the tiny parts of plants and animals. They also have told us that cells are the basic unit of life, which means that all living things are made up of cells.
Plants and animals may appear to be different, but if you look closely, you can see that they are made up of the same groups of cells. For example, you can see that all plants have cells that carry out photosynthesis, and all animals have cells that carry out respiration.
Cells are the smallest part of all living things. They’re the tiniest living things in the world. All the cells in our body reproduce themselves by dividing into two daughter cells. This process is called cell division or mitosis.
The cytoplasm is the jelly like substance inside a cell. It is made up of 80% of water. It contains many organelles, which are small structures that form part of the cell. These includes nuclues ribosomes, mitochondria, golgi bodies, endoplasmic reticulum, etc. The cytoplasm also contains enzymes, which are proteins that speed up chemical reactions inside the cell.
The cell membrane is the outer layer of a cell. It controls what enters and leaves a cell. It also regulates the cell’s water content. It is made up of phospholipids, proteins and cholesterol. Phospholipids are made of a hydrophilic head and a hydrophobic tail. The hydrophilic head is attracted to water, and the hydrophobic tail is repelled by water. When phospholipids are in water, the hydrophilic head is attracted to the water, and the hydrophobic tail is repelled by it.
Endoplasmic reticulum is having a folded surface coated with ribosomes. It is a continuous tube which is folded into many branches and sacs. The ribosomes are attached to the membrane and synthesize proteins for secretion in the lumen of the ER.
Mitochondria are the powerhouses of the cell. They are responsible for the production of ATP, which is the primary energy source of the cell. They are semi- autonomous in nature because they have their own genetic material.
The nucleus is the central part of the cell. It contains all of the cell’s chromosomes. The nucleus also controls most of the chemical reactions that happen in the cell. Unlike the rest of the cell, the nucleus is very small. The nucleus is so small that it can fit into the space taken up by the cell’s plasma membrane.
The nucleus contains chromosomes made up of DNA. DNA is a long molecule that contains the genetic information that controls everything that happens in a cell. The nucleus also contains other molecules, such as RNA and protein. The nucleus controls most of the chemical reactions that take place in the cell.
Ribosomes are protein complexes present on the membrane of the rough endoplasmic reticulum. Ribosomes perform the synthesis of proteins in the cell and are responsible for the growth and the maintenance of the cell. Ribosomes are the proteins which are made up of ribosomal RNA and proteins.
The Golgi apparatus is found in most eukaryotes in the cytoplasm. The structure of the Golgi apparatus is stack of flattened membrane vesicles or saccules. Their number varies with the organism. They are found in a specific location in the cytoplasm. The Golgi apparatus is present as a stack of flattened saccules. The membranes of the saccules are continuous with the endoplasmic reticulum. The Golgi apparatus is a transport organelle which modifies, sorts and packages proteins and lipids.