Mätch the following: At what level of protein structure do B-sheets of amino acids and a-helices, located at a distance from each other along the length of a polypeptide chain, come together to form a globular protein? This protein structure is the result of two or more protein sub-units assembling to form a larger, biologically active protein complex. 1. primary structure 2. secondary structure What level of protein structure describes amino 3. tertiary structure acid sequence such as Gly- Ala-Val-Ser-Glu-Glu-Tyr- 4. quaternary structure His? At what level of protein structure do the chains of amino acids fold into an a- helical structure? >

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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.