The DNA strands are so thin that you could fit 90,000 of them inside a human hair. It is only 2 nanometers wide i.e. 2 billionths of a meter.
Tag: Cell Biology
How do lipids maintain the fluidity of the plasma membrane?
The fluidity of the plasma membrane is maintained by the lipids present in the membrane such as phospholipids, glycolipids, and sterols. These lipids play a vital role in enhancing the flexibility and mechanical stability of the membrane.
11 Amazing Facts about DNA You didn’t Know.
DNA is the genetic material in all except certain viruses. In Prokaryotic cells, DNA occurs in the cytoplasm and is the only component of the chromosomes. Whereas, in Eukaryotic cells, DNA is largely confined to the nucleus. Do you know, A human DNA contains 3 billion chemical letters. Yes, it is true. There are several other amazing and fun facts about DNA that we don't know.
What is the physical basis of life?
Protoplasm is the essence of life. We can refer to all the constituents of the cell collectively by the term Protoplasm. It shows all those activities that are characteristic of life.
How a 2 meters long DNA is fitted into a 2 micrometers Nucleus?
An average Human cell (diploid) contains about 6.4 billion base pairs of DNA divided among 46 chromosomes. The length of each base pair is about 0.34 nm. Therefore, if the DNA molecule in a diploid cell were laid out end to end, the total length of DNA would be approximately 2 meters.Since the diameter of a typical cell nucleus is only 10 μm, it is obvious for us to know that how is it possible to fit 2 meters of DNA in such small space without getting tangled up. The answer lies in the remarkable manner in which a DNA molecule is packaged.
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