Question

Please answer all.... Thank you!

57) An enzyme binding site with a specific shape can bind only those having a complementary shape; thus, the shape of the protein molecule determines the specificity of the binding site the affinity of the binding site the saturation of the binding site the counding strength of the binding site Two of the above are correct. 58) A cell is what it is because of the instructions it receives concerning the types of proteins (enzymes included) it should synthesize and the rates it should synthesize them. O True O False 59) In an enzyme-substrate reaction, increasing the substrate concentration increases the number of binding sites that are occupied on the enzyme. At 100% saturation, all biding sites have been occupied and further increases in the concentration of the substance will not increase the amount bound. O True O False 60) As a result of the competition, the reaction rate of one substance with an enzyme may be markedly dimished by the presence of another competing substrate. O True O False

Answer 1

57 Ans: The correct option is A.

Active site of enzykme can only bind to specific molecule if the ligand fits right into active site shape, this determines the specificity of binding site.

• Option B is incorrect as affinity is decided by different tyoe of interaction between enzyme and ligand.
• Option C is incorrect as saturation is dependant upon number of ligands that can interact with the active site.
• Option D is incorrect as strength depends upon interaction again.