Tag Archives: nucleus

Cell cycle and Cell division

By | August 31, 2021

All the living organisms, even the enormous ones, start their journey from a single cell. The process through which cells originate from existing living cells is called as cell division. Each cell have the ability to divide into two daughters cells (In mitosis), which again can grow and divide. This after many cycles (of growth… Read More »

Differences between DNA and RNA

By | August 21, 2021

Nucleic acids accounts for one of the four major biological macromolecules, which carry genetic blueprint of a cell and are essential for proper functioning of the cell. Deoxyribonucleic acid (DNA) and Ribonucleic acid (RNA) are two important nucleic acids which help in carrying genetic information and are made up of nucleotide monomers. Even though both… Read More »

The Nucleus of a Eukaryotic Cell and Chromatin Organization

By | August 20, 2021

The nucleus of a eukaryotic cell is essential for the storage and utilization of genetic information. The contents of the nucleus are enclosed by a complex nuclear envelope that separates the nucleus from the cytoplasm. The nucleus of a non-mitotic cell contains: Chromosomes, highly extended nucleoprotein fibers, also called chromatin. An irregularly shaped electron-dense structure,… Read More »

What are prokaryotes ?

By | August 18, 2021

All the living organisms on this planet are made up of cells. They can be divided into two groups : Prokaryotes and Eukaryotes. Prokaryotes are single celled or colonial organisms, where the cell is surrounded by cell membrane or plasma membrane and lacks a defined nucleus (as found in eukaryotic cell). These cells are of… Read More »

Golgi Complex – The Protein Assembly Center of the Cell

By | July 26, 2021

The Golgi complex has a characteristic morphology – flattened, disklike, membranous cisternae with dilated rims, and associated tubules. The cisternae have a diameter of 0.5 to 1 micrometer, stacked in an ordered manner and a Golgi stack contains fewer than eight cisternae. There are several thousand distinct types of stacks depending on the cell type.… Read More »

DNA – Instructions for life

By | July 21, 2021

If one looks inside the nucleus of every human cell, there are 46 tiny rod like structure called as Chromosomes. These chromosomes are made of tightly coiled strands of Deoxyribonucleic acid – DNA. It is one of the two main nucleic acids found in our cells. DNA happens to be the genetic material in all living… Read More »

Structural and functional unit of life – The Cell

By | July 12, 2021

Our earth is a wonderful place where many different kinds of organisms co-exist. The diversity observed among living forms is huge- ranging from minute Algae to tall trees, micro organisms like bacteria to gigantic Blue whales. The thing that unifies all of them is that all have a basic unit of life called as “Cells”.… Read More »