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Reaction specificity
Some enzymes catalyze only one reaction acting on a specific substrate. Example: urease and catalase acts only on urea and hydrogen peroxide, respectively. This is also called absolute specificity.
Many enzymes can catalyze same type of reactions (phosphate transfer, oxidation-reduction, hydrolysis etc.) in several structurally-related compounds. Example: carboxypeptidase acts on protein chains and removes one amino acid at a time from the C-terminal, irrespective of the nature of zimino acid.
A substrate caa undergo many reactions but in a specific reaction, an enzyme will catitlyze only one of these reactions. Example: citrate synthase converts oxaloacetate to citrate in the presence of acetyl-CoA. But, in absence of acetyl- CoA, oxaloacetate is acted upon by a different enzyme malate dehydrogenase with the formation of malate.
E. coli DNA has a MW of about 2.7 x 10^9 Daltons. How many meters long is this molecule and what does this tell you about the state of the intracellular DNA? ( The lenght of a sing
The process of meiosis in animals is called gametogenesis .It takes place in the testis in male and ovary in female. Gametogenesis is divided into spermatogenesis (formation of
Two homologous human chromosomes have the following structure: where the letters represent genetic markers and the black dot represents the centromere. 1. Diagram the two chromosom
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Describe the monomer unit of a protein and how monomer units are assembled into peptides.
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Lengthening of long bones in humans takes place in a specific area of the bone. This area is known as the: a) Cancellous bone b) Medullary canal c) Periosteum (pron: per-
Lens Regeneration in Amphibians It is an amazing fact that between all vertebrates only certain amphibians have the unique ability to regenerate lens, iris and retina in adul
Define Mutual supplementation of Protein with legume and milk? Improvement of cereal diets with legume and milk proteins: The proteins of poor diets based on different cereals
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