(True or False) Increasing the substrate concentration would infinitely increase the activity of an enzyme.Question 5Select one:a.Trueb.False

Which of the following statements is/are true of enzyme catalysts?Group of answer choicesThey bind to substrates but are never covalently attached to substrate or product.They increase the equilibrium constant for a reaction, thus favoring product formation.They increase the rate at which substrate is converted into product.They lower the activation energy for the conversion of substrate to product.To be effective, they must be present at the same concentration as their substrates.

Specific growth rate depends on substrate concentration (according to Monod kinetics) in the following wayGroup of answer choicesincreases with increasing substrate concentrationdecreases with increasing substrate concentrationreaches a maximum at high substrate concentrationsis independent of substrate concentrationis zero if substrate concentration is zerois half-maximal when the substrate concentration equals Ks

All of the following are true of enzyme-catalyzed reactions EXCEPT:A.the presence or absence of a post-translational modification may alter the activation energy Ea of the reaction.B.the enzyme does not affect the net reaction rate if the ratio of products to reactants equals Keq for the reaction.C.substrates can covalently modify the enzyme to cause a permanent decrease in the enzyme's turnover number kcat.D.the saturation of enzyme active sites by substrate molecules limits the maximum reaction velocity Vmax.Submit

Which of the following best describes the assumption made in steady state kinetic analysis?Group of answer choicesThe concentration of the substrate is decreasing.The concentration of the substrate is constant.The formation of the enzyme-substrate complex is the rate-limiting step.The concentration of enzyme-substrate complex is constant.The enzyme-substrate complex is quickly transformed into the product and free enzyme.

Which of the following statements are true of enzymes?SELECT ALL THAT APPLYEnzymes are permanently changed in a reaction.Enzymes are involved in catabolism but not in anabolism.Enzymes produce specific products from specific substrates.Enzymes provide a route from reactants to products that has a lower activation energy.Enzymes can be regulated to control cellular metabolism.All enzymes require cofactors for activity.