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Proteins are ............................ in the body. QUINOA, an example of a complete plant protein that provides the necessary ratios of the ESSENTIAL AMINO ACIDS to the body.
There are a total of 20 amino acids in nature;they are the building block of proteins. These amino acids are divided into two different classes; essential and non essential amino acids. We do not need to take the non essential amino acids in our food because our body can synthesize them when they are needed. We have to take the essential amino acids in our food because our body can not synthesize them. A protein source that contains all the essential amino acids is called a complete protein and a good example is quinoa. An incomplete protein source is one that does not consist of all the essential amino acids.
Petroleum is not a source of coal or coal-precursor.
Answer: b. to form RNA molecules form DNA
The cell would have to take in and use more energy in order to break the covalent bonds.
The correct option is B
Hydrogen bonds :
are the chemical mechanism that governs the complementarity of the bases of DNA. This correspondence is unique thanks to the geometry of the hydrogen donor atoms and the acceptors that form the bases.
The (hydrophobic) bases are stacked inside the double helix of DNA; their plane is perpendicular to the axis of the double helix. The outside (phosphate and sugar) is hydrophilic.
The hydrogen bonds between the bases of one strand and the bases of the other strand keep the 2 strands united.
One purine on one strand necessarily binds to a pyrimidine on the other strand. As a corollary, the number of purine residues is equal to the number of pyrimidine residues.
* A binds to T (by 2 hydrogen bonds).
* G binds to C (via 3 hydrogen bonds: more stable bond: 5.5 kcal vs 3.5 kcal).
What part of the DNA strand do hydrogen bonds hold together?
hydrogen. Covalent bonds occur within each linear strand and strongly bond the bases, sugars, and phosphate groups (both within each component and between components). Hydrogen bonds occur between the two strands and involve a base from one strand with a base from the second in complementary pairing.
Learn more about DNA strand:
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