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Limitation of cell size

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 Wondered Why Cells Don't Grow After A Particular Size?  Answer : The concept of surface area to volume ratio... Surface area to volume ratio is an important concept to understand the limitation of cell size. One of the reasons limiting cell size growth is the metabolic rate and the exchange of excretory products. Curious what metabolism has got to do with cell size? It is all that plays the role of growth within cells.  Metabolism is a chemical breakdown of biomolecules to produce energy, during this reaction the build up of metabolic waste accumulates within the cells. In order to prevent accumulation the cell tents to excretes waste, hence this means there must be a larger surface area for faster rate of excretion. Volume on the other is proportional to the cell metabolic rate. Hence the relation of metabolic rate with volume and surface area is of key significants for a proper working of a cell. This could be seen in the following figure.  (Source :    ...

Molecular Docking

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Molecular docking is a method of studying the interaction between two molecules known as receptor molecules and the ligand molecule. The purpose of this method of docking is to predict the structure of the complex formed after the interaction of the ligand and receptor molecule through computation method. To understand further it is necessary to know what are a ligand and a receptor molecule, in common terms they are both proteins. The receptor molecule is often justified as a small protein molecule that is mobile with the body system such as hormones, enzymes and so. Whereas the ligand molecule is a bigger protein complex with different combinations of proteins bonded together having different protein receptors within them.  This method of docking is a combination of different algorithms functioning together to compute the ligand-receptor interaction in all conformational sites possible of the protein.  Throughout this docking, the basic concept of geometrical and chemical ma...

Epigenetics

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 Epigenetics: The reprogramming of genes  By this time, I am definitely sure most of you have realised the change in our environment and lifestyle are the major causes of various diseases and disorders. Epigenetics is one such study probing to identify and reason the effect of environment and behaviour on gene expression. In other words, it is a study on the changes in the surrounding to lead to changes in gene expression.  Does this mean there is a change in the DNA sequence causing mutation? that is a definite NO. The DNA sequence is not changed in any way, but the process of reading all the sequence of genes is changed. Hence, this causes the functioning of the proteins to vary, thereby either strengthening or weakening the biological mechanism of an organism.  Gene expression functions by binary characteristics of either being turned 'on' or 'off'. This particular term gene is simply a portion of the long-chained DNA sequence coding for a particular protein. As k...

Daily science - Climate change

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The challenge that humanity has not realised yet It is very disappointing that mankind is focusing on inventions more than conservations. People are not really ready to face the upcoming issue of climate change. If we haven't noticed, it has already started destroying a broad range of species to go extinct. Just consider the wildfire in the Amazon forest, it was the largest existing ecosystem with many species that went extinct without even being discovered. Well, you may be thinking, what does all of this have to do with conservation and climate change. To put it straight, those lives matter to bring a balance to our existence on Earth. If not for those species at least start conserving the nature that built you, or the future life you want to hold on this planet. Many people talk about patriotism to their country, their culture, their tradition, and etc. All of these are created within the human communities, but what about nature, and the Earth that created you to evolve to what ...

Daily Science : What happens if COVID-19 mutates?

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What happens if COVID-19 mutates? Hello everyone hope you're all safe and healthy at home. Well, today I wanted to talk about SCIENCE for the current situation. Yes, the COVID-19, I know it's been long and that we have started becoming a little careless. Nothing is better than now, so let me enlighten you about why the spread should stop or slow down. It is an apparent reason on the bases of the economic and the political context that the people of the country matter with their routine lifestyles. But, what people don't know much about is the growth or the evolutionary pathway of a viruses lifestyle.   When the virus spreads from one body to another, it is adapting and changing every single time it replicates and multiplies with the influence of the human body's environment. Don't be surprised this is common within all species of life as well, we are all adapting to our surrounding to be the survival of the best fit. The primary alarming signal here is the adaptatio...