Archive

Category Archives for "Cell Biology"

Cytoplasm Vs Cytosol: Definition, Functions and Differences

The cell is the functional and structural unit of all living organisms. The eukaryotic cells are present both in the plants and animals. The cells have various shapes, sizes, and physiology. All the cells are typically composed of cell-covering, cytoplasm, cytoplasmic organelles, ergastic substances, and a true nucleus.CytoplasmThe cytoplasm is the live, semi-transparent, vacuolated, granular, […]

Continue reading

Cell Nucleus: Definition, Structure and Functions

The cell is the fundamental structural, biological and functional unit of living things. The typical cell contains the most outstanding visual and functional feature, the nucleus. The nucleus is the most prominent organelle which occupies about 10 % of the volume of the cell.The nucleus is the double membrane-bounded dense round cellular component which contains […]

Continue reading

Cell Wall: Structure and Functions

The cell wall is the semi-rigid, laminated, semi-permeable non-living outermost cellulose coat which is positioned next to the cell membrane of the plant cells, Fungi, Algae, Bacteria, and some Archaea. The protoplasm of the plant cells is separated from the external world by the cell wall which is entirely lacking in animal cells.  Generally, the […]

Continue reading

Plasma Membrane: Structure and Functions

All types of cells are bounded by a thin membrane which is known as the plasma membrane. It is also known as the cell membrane, cytoplasmic membrane or plasmalemma. It is a living ultra-thin, elastic porous selectively permeable membrane that separates the cell content from the external environment.The term cell membrane was first coined by […]

Continue reading

Difference between Lysosome and Ribosome

A cell contains different types of cell organelles which perform different roles within the cell and they help in the survival of living organisms. As cell organelles, lysosomes and ribosomes carry out different functions in the cell. Lysosomes are found only in eukaryotic cells but ribosomes are present in both prokaryotic and eukaryotic cells.Image showing […]

Continue reading

Difference between Plasma Membrane and Cell Wall

The cell is the fundamental structural, biological and functional unit of all living organisms. It is also known as building block of life. The numbers of cells vary from species to species. Each cell is enclosed by a membrane and composes of proteins and nucleic acids. In bacteria, fungi, algae and plant cell, the outer […]

Continue reading

Difference Between Prokaryotic and Eukaryotic Cell

On the basis of internal structure, cells are of two types: Prokaryotic and Eukaryotic cells. Prokaryotic cells are simple and small in size while eukaryotic cells are complex and large in size. Eukaryotic cells have true nucleus and nucleolus with different types of membrane-bound cell organelles such as Endoplasmic reticulum, Golgi body, Mitochondria etc. Well […]

Continue reading

Difference Between Mitochondria and Chloroplast

The cell is the functional, structural and biological unit of all living organisms. It is of two types such as prokaryotic and eukaryotic cells. The cell contains many types of organelles, among them, some are typically solitary such as the nucleus and golgi complex, while others can be numerous such as mitochondria,  lysosomes, chloroplasts, etc. […]

Continue reading

Ribosome: Types, Structure and Functions

The ribosome is one of the essential membrane-bound organelles of the cells. It is a minute spherical structure that contains RNA and protein and serves as the site of protein synthesis.  It occurs either freely in the cytoplasm or in the matrix of mitochondria and chloroplast or attached on the outer membranes of the endoplasmic […]

Continue reading

Lysosome and Its Functions

Lysosomes are single membrane-bound cytoplasmic organelles of most cells filled with a wide variety of hydrolytic enzymes that are involved in intracellular digestion.  The term “Lysosome” comes from the Greek word ‘lysis’, to separate and ‘soma’ body.  Sometimes it can be described as the stomach of the cell. In 1950, Belgian Cytologist Christian Rene de […]

Continue reading