The number of atoms per cell is about the same as the number of cells in the body. 19+6+4= 29 atoms. 19 + 8 + 4 = 31 atoms. Try writing that number out on a piece of paper: 7 with 27 zeros behind it. 1 Answers. This packaged form of the DNA is called a chromosome. In dna there are 4 strands which join each part of the dna together, these are t and a , and g and c each one of these contains 200-3000 atoms depending on wether it dna or mrna Figure 2 below shows the structural formula of DNA in greater detail. 6. The number of atoms per human cell is only a rough estimate because cells come in different sizes. The nitrogen bases are ring compounds with their carbon and nitrogen atoms arranged in single or double rings. The DNA in one chromosome would actually be hundreds of thousands of bases long These two models shows how all the atoms of the sugars, phosphates and nitrogenous bases fit together to make the "spiral staircase" or "twisted ladder" shape first suggested by the x-ray diffraction pictures of DNA taken by Rosalind Franklin and Maurice Wilkins. Maria Sipes answered 3 years ago. The participating atoms can be located on the same molecule (adjacent nucleotides) or on different molecules (adjacent nucleotides on different DNA strands). On average, how many mistakes are made in every billion base pairs? Because the cell is very small, and because organisms have many DNA molecules per cell, each DNA molecule must be tightly packaged. 7. OR. We say roughly because if you pluck a hair or pick your nose there might be slightly less. Question/Answer › Category: Biochemistry › How many phosphorus atoms are there in a DNA double helix having 10,000 base pairs?-1 Vote Up Vote Down. OR. 19+16+4 = 39 atoms. Here the atoms are colored according to the standard CPK coloring scheme (C, N, O, P).For simplicity, hydrogen atoms are not shown. Two identical molecules of DNA are left behind. Our body is composed of roughly 7x10 27 atoms. Only certain bases can pair together to form base pairs. During DNA replication, DNA unwinds so it can be copied. On average, one. In organisms called eukaryotes, DNA is found inside a special area of the cell called the nucleus. Now, the average DNA strand in humans contains about 440 million of these nucleotides. Is it possible to make a mistake during replication? So, the total number of atoms in the DNA strand would be . If we know how many hydrogen atoms are in our body, then we can say that the rest is stardust. Of course, that’s just an estimate since human DNA isn’t composed of only ‘T’ nucleotides, and I think some of them can have more than one phosphate group (not sure). The six most common elements of life on Earth (including more than 97 percent of the mass of a human body) are carbon, hydrogen, nitrogen, oxygen, sulphur and phosphorus. In the left frame is a short stretch of a single strand of DNA. Carbon-14 is breathed in by plants, which humans and animals eat every day, and is part of our DNA. In DNA, Adenine (A) always pairs with thymine (T), and guanine (G) always pairs with cytosine (C). Yes. OR. How the bases are arranged in the DNA determines the genetic code. Scientists estimate the average cell contains 100 trillion atoms. Total for a thymine nucleotide: 34 atoms. What happens when the enzyme has passed the end of the DNA? That is a lot of atoms! Multiply that by 6 billion nucleotides and you get 204 billion atoms. Phosphate group has about 4 atoms. 19+7+4 = 30 atoms. A hydrogen bond is a weak chemical bond that occurs between hydrogen atoms and more electronegative atoms, like oxygen, nitrogen and fluorine. Maria Sipes asked 3 years ago. The phosphate group contains 4 atoms. So, each nucleotide may have. 8. But unlike other atoms and molecules that are constantly changing, a person's DNA remains the same from the day of a cell's birth – which occurs when a parent cell divides – throughout its life span. 0 Vote Up Vote Down. DNA is a polymer of linked deoxyribonucleotides. 5.
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