"This Double Helix is a scientific model of B deoxyribonucleic acid, which is the most common form of DNA. DNA is a chemical carrier of our genes. It has an elegant geometric structure that allows it to store a massive amount of information. Every organism has its own DNA, and it is our DNA that makes each of us unique.     Beads representing Phosphorus and Deoxyribose are 15 mm wide and multifaceted, and beads representing nitrogenous bases are oval and flat, 25 mmX20 mm."

"This Double Helix is a scientific model of B deoxyribonucleic acid, which is the most common form of DNA.

Deoxyribonucleic acid (DNA) is the hereditary matter in cells that makes up the repository for genes. DNA's structure consists of sugar, phosphate groups,and nitrogenous bases in its nucleotides. These bases are cytosine, thymine, adenine, and guanine. Cytosine and thymine are classified as pyrimidines that have a single ring. Adenine and guanine are classified as purines that have a double rings. Adenine base pairs with thymine (uracil only in RNA), and cytosine base pairs with guanine.

Deoxyribonucleic acid (DNA) is the hereditary matter in cells that makes up the repository for genes. DNA's structure consists of sugar, phosphate groups,and nitrogenous bases in its nucleotides. These bases are cytosine, thymine, adenine, and guanine. Cytosine and thymine are classified as pyrimidines that have a single ring. Adenine and guanine are classified as purines that have a double rings. Adenine base pairs with thymine (uracil only in RNA), and cytosine base pairs with guanine.

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My life, literally and figuratively.  Glad someone else calls them "nitrogenous base"s and has the directionality of the riboses and number of H-bonds right.    Just realized it's originally from IDT.  That explains it!

DNA is a polymer of nucleotides. Two polymers can join to form a double-stranded molecule (double helix) via complimentary base pairing. For more details go to the "DNA structure and function" board

Complementary base pairs: purine-pyrimidinepairs; sugar-phosphate backbone; 2 DNA strands wound around one another to produce a double helix; stabilized in part by hydrogen bonds between nitrogenous bases on either strand; due to the geometry of the bases & amount of space available in helix, H bonds only form when A and T w/ 2 bonds or G and C w/ 3 bonds line up on opposite strands

Complementary base pairs: purine-pyrimidinepairs; sugar-phosphate backbone; 2 DNA strands wound around one another to produce a double helix; stabilized in part by hydrogen bonds between nitrogenous bases on either strand; due to the geometry of the bases & amount of space available in helix, H bonds only form when A and T w/ 2 bonds or G and C w/ 3 bonds line up on opposite strands

Basic Components of Nucleic Acids - Nitrogenous bases, Ribose and Phosphate group. The bases are Purines (A,G) and Pyrimidine (C,T,U). Ribose, Phosphate.    http://www.biochemden.com/basic-components-nucleic-acids-purines-pyrimidines

Basic Components of Nucleic Acids - Purines and Pyrimidines

Drawing this picture helped me as a visual learner to learn the structure of DNA. By drawing a DNA strand I learned that the backbone of DNA is a chain of sugar and phosphate. Linked to the sugar of the chain is one nitrogen base. The nitrogen bases are thymine, guanine, cytocine, and adenine. This chain of sugars phosphates and nitrogen bases are connected to another chain by a hydrogen bond.

Drawing this picture helped me as a visual learner to learn the structure of DNA. By drawing a DNA strand I learned that the backbone of DNA is a chain of sugar and phosphate. Linked to the sugar of the chain is one nitrogen base. The nitrogen bases are thymine, guanine, cytocine, and adenine. This chain of sugars phosphates and nitrogen bases are connected to another chain by a hydrogen bond.

The goal of this dry lab is to have student's construct a paper model of a DNA double helix.  They will construct 8 nucleotides (nitrogenous base, ...

DNA Structure Lab: Paper Helix

The goal of this dry lab is to have student's construct a paper model of a DNA double helix. They will construct 8 nucleotides (nitrogenous base, .

Uric acid is a byproduct of the metabolism of purines, one of two types of nitrogenous bases that form the basic structure of DNA and RNA. W...

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3 Main differences between DNA & RNA: RNA uses the sugar Ribose while DNA uses Deoxyribose. RNA is single stranded while DNA is double stranded. RNA uses the nitrogenous base Uracil whereas DNA uses the nitrogenous base Thymine.

3 Main differences between DNA & RNA: RNA uses the sugar Ribose while DNA uses Deoxyribose. RNA is single stranded while DNA is double stranded. RNA uses the nitrogenous base Uracil whereas DNA uses the nitrogenous base Thymine.

DNA. The nucleotides are joined to one another in a chain by covalent bonds between the sugar of one nucleotide and the phosphate of the next, resulting in an alternating sugar-phosphate backbone. According to base pairing rules (A with T and C with G), hydrogen bonds bind the nitrogenous bases of the two separate polynucleotide strands to make double-stranded DNA.

Scientists: Alien Genes in Human DNA & Extraterrestrial Abilities to Modify DNA

This DNA is a teaching model; It demonstrates different structural units of DNA: Phosphorus, Oxygen, Deoxyribose, CH2 group, 4 types of nitrogenous bases and bonding molecules of hydrogen. Each unit is shape and color coded.

DNA MOLECULAR MODEL, TEACHING MODEL 20" (50 cm)

This DNA is a teaching model; It demonstrates different structural units of DNA: Phosphorus, Oxygen, Deoxyribose, group, 4 types of nitrogenous bases and bonding molecules of hydrogen. Each unit is shape and color coded.

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