Functions Of Proteins - A Level Biology.
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A Level Biology - Proteins. STUDY. Flashcards. Learn. Write. Spell. Test. PLAY. Match. Gravity. Created by. MrExham. Terms in this set (12) amino acids. An organic molecule containing a carboxyl group and an amino group; serves as the monomer of proteins. peptide bond. The covalent bond between the carboxyl group on one amino acid and the amino group on another, formed by a dehydration.
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Proteins are polymers of amino acids, formed by long chains of amino acids joined together by peptide bonds. These bonds are formed by condensation reactions which allow two single amino acid molecules to join together forming a dipeptide molecule and water. There are four levels of protein structure. The primary structure is the order of amino acids in the peptide. Secondary structure is the.
The standard curves are not linear for many proteins, especially those with more than 60ug of proteins. This inherent nonlinearity is caused by the reagent itself as there is an overlap in the spectrum of the two different colour form of the dye. The background value of the reagent is continually decreasing when more proteins is bound to the dye. Absorbance may also vary with the age of the.
The mRNA is spliced in many different ways, allowing a single gene to actually result in the creation of multiple proteins. This process is called alternative splicing. Humans have approximately 23,000 genes, but at least 90,000 so the creation of these extra proteins via alternative splicing of the introns is why the introns are important.
Protein structure and variety. Proteins are composed of chains of amino acids. A typical protein is about 400 amino acids long. As there are 20 different types of naturally occurring amino acids.