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Showing posts from February, 2020

Why out of 20 amino acids only nine amino acids are classified as essential amino acids ?

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Amino acids play central roles both as building blocks of proteins and as intermediates in metabolism.  The 20 amino acids that are found within proteins convey a vast array of chemical versatility .  The precise amino acid content, and the sequence of those amino acids, of a specific protein, is determined by the sequence of the bases in the gene that encodes that protein.  The chemical properties of the amino acids of proteins determine the biological activity of the protein.  Proteins not only catalyze all (or most) of the reactions in living cells , they control virtually all cellular processes.  Also, proteins contain within their amino acid sequences the necessary information to determine how that protein will fold into a three-dimensional structure, and the stability of the resulting structure.  The field of protein folding and stability has been a critically important area of research for years and remains today one of the great unsolved mysteries. It is, ho
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Learn Html with Kbdk: How does HTML describe the structure of pages?

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To describe the structure of a web page, we add code to the words we want to appear on the page. You can see the HTML code for this page below. Don't worry about what the code means yet. We start to look at it in more detail on the next page.  Note that the HTML code is in blue, and the text you see on the screen is in yellow. <html> <body> <h1> This is the Main Heading </h1> <p> This text might be an introduction to the rest of the page. And if the page is a long one it might be split up into several sub-headings. </p> <h2> This is a Sub-Heading </h2> <p> Many long articles have sub-headings so to help you follow the structure of what is being written. There may even be sub-sub-headings (or lower-level headings). </p> <h2> Another Sub-Heading </h2> <p> Here you can see another sub-heading. </p> </body> </html> The HTML code (in blue) is made
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Neet Cracky: The major differences between DNA and RNA

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Neet Cracky  I know that Google is flooded with many results for this query about the differences between DNA and RNA but I would like to shortlist my points and give you the aptest information required for board exams and other competitive exams. Let's get started with the topic. Let's start with the basics we know that DNA is abbreviated as D eoxy R ibo N ucleic acid and RNA is abbreviated as R ibo N ucleic A cid. You might have wondered why do we study DNA and RNA which are too small to be seen by the naked eye. DNA was first identified by Friedrich Miescher in the late 1860s but in the 1950s DNA was discovered by James Watson and Francis Crick .  Friedrich Miescher a Swiss physician and biologist  discovered RNA in 1868. He named nucleic acid as ' Nuclein '.He was the first scientist to isolate Nucleic acid. In 1889 a scientist known as Altman named nuclein to nucleic acid. The length of all the DNA  present in the human body is 600 trillion mi
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