Using absorbance at 234 nm, 280 nm, and 260 nm, you calculated the percent of proteins present in your DNA. The percent of proteins present when calculated using absorbance at 260 nm and 280 nm was much larger than the percent of proteins present calculated using absorbance at 260 nm and 234 nm. This indicated that: a. Peptides present in your DNA preparation contain a large number of amino acids, tyrosine, phenylalanine, and tryptophan. b. Peptides present in your DNA preparation contain a small number of amino acids tyrosine, phenylalanine, and tryptophan. c. Peptides present in your DNA preparation do not contain amino acids tyrosine, phenylalanine, and tryptophan. d. Your DNA preparation is not contaminated with proteins. All of the above. f. None of the above. e.
Nucleotides
It is an organic molecule made up of three basic components- a nitrogenous base, phosphate,and pentose sugar. The nucleotides are important for metabolic reactions andthe formation of DNA (deoxyribonucleic acid) and RNA (ribonucleic acid).
Nucleic Acids
Nucleic acids are essential biomolecules present in prokaryotic and eukaryotic cells and viruses. They carry the genetic information for the synthesis of proteins and cellular replication. The nucleic acids are of two types: deoxyribonucleic acid (DNA) and ribonucleic acid (RNA). The structure of all proteins and ultimately every biomolecule and cellular component is a product of information encoded in the sequence of nucleic acids. Parts of a DNA molecule containing the information needed to synthesize a protein or an RNA are genes. Nucleic acids can store and transmit genetic information from one generation to the next, fundamental to any life form.
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Introduction :-
A peptide is a short chain of amino acids linked together by peptide bonds. Peptides play important roles in the biological processes of living organisms, including serving as neurotransmitters, hormones, enzymes, and structural components. They can also serve as drugs for medical treatment. The number of amino acids in a peptide can range from two to several hundred, and the specific sequence of amino acids determines the peptide's structure and function.
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