Topic 2.4: Proteins
Essential Idea: Proteins have a very wide range of functions in living organisms.
At SHS, Topic 2.4 is taught in the following class unit(s):
Statements & Objectives:
2.4.U1 Amino Acids are linked together by condensation to form polypeptides.
2.4.U2 There are 20 different amino acids in polypeptides synthesized on ribosomes.
2.4.U3 Amino Acids can be linked together in any sequence giving a huge range of possible polypeptides.
2.4.U4 The amino acid sequence of polypeptides is coded for by genes.
2.4.U5 A protein may consist of a single polypeptide or more than one polypeptide linked together.
2.4.U6 The amino acid sequence determines the three-dimensional conformation of a protein.
2.4.U7 Living organisms synthesize many different proteins with a wide range of functions.
2.4.U8 Every individual has a unique proteome.
2.4.A1 Rubisco, insulin immunoglobulins, rhodopsin, collagen and spider silk as examples of the range of protein functions.
2.4.A2 Denaturation of proteins by heat or by deviation of pH from the optimum.
2.4.S1 Drawing molecular diagrams to show the formation of a peptide bond.
2.4.NOS Looking for patterns, trends, and discrepancies- most but not all organisms assemble proteins from the same amino acids.
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