Why does the velocity reach a plateau (asymptote) at high substrate concentrations?       a. At high substrate concentrations, the product becomes an inhibitor of the reaction that created it.       b. At high substrate concentrations, all enzymes are saturated with substrates.       c. At high substrate concentrations, all substrates have been converted to products.       d. At high substrate concentrations, the product concentration is high and the reaction starts running in reverse.

Q: An enzyme-substrate solution has been "poisoned" with a noncompetitive inhibitor. It is expected…

A: Enzymes can be made up of proteins or RNAs (ribozymes) and can participate in a chemical reaction…

Q: Which of the following describes a reaction that requires substrate 1 to bind the the enzyme, then…

A: Proteins are macromolecules that help in the structure and function of the living body. Enzymes are…

Q: An allosteric inhibitor does which of the following? a. Binds to an enzyme away from the active site…

A: The allosteric inhibitor binds to an enzyme at a site other than the active site. The shape of the…

Q: How can a noncompetitive inhibitor affect enzyme activity without binding to the active site? a. It…

A: The substance that decreases the activity of enzyme is called enzyme inhibitor. There are two types:…

Q: All of the following increase enzymatic activity except a. an increase in temperature. b. an…

A: Enzymes are protein molecules which acts as a catalyst and speed up the reaction when they act on…

Q: Which statement does not apply to transition states? A. only exist transiently (have lifetimes on…

A: Induced-fit model Induced fit is a model in which the structure of an enzyme's active site can be…

Q: Which factor leading to increased reaction rates for enzyme catalyzed reactions involves removing…

A: Short, strong or low barrier hydrogen bonds are found when the pK values of the atoms sharing the…

Q: At what substrate concentration would this enzymatic reaction be operating at only 20 percent of its…

A: The Michaelis-Menten equation can be used to relate the substrate concentration to the reaction rate…

Q: compare the state of an enzyme active site at a low substrate concentration and at a high substrate…

A: The rate of the reaction depends on various parameters like The concentration of the reactants or…

Q: An allosteric site is the location on an enzyme’s surface wherea. the substrate binds.b. the signal…

A: Answer is a.)  substrate .

Q: In an inborn error of metabolism, a. a genetic change results in the production of a defective…

A: Introduction: The series of chemical reactions that occur in the living body jointly considered…

Q: Which of the following is incorrect about the rate of an enzyme-catalyzed reaction? O a. It does not…

A: The rate of an enzyme-catalyzed reaction depends on certain factors and one of them is concentration…

Q: Which of the following statements is true? a. Plotting the rate of facilitated transport against…

A: Facilitated transport, also known as facilitated diffusion, is a mechanism of passive transport that…

Q: When an enzymatic reaction is in progress, do you expect to see happen to the amount of product?

A: Enzymes are proteinaceous molecules that increase the rate of biochemical reactions. Enzymes are…

Q: An enzyme has the ability to catalyze reactions of several unrelated compounds. The mechanism of how…

A: Enzymes are protein molecules that increase the rate of reaction by decreasing the activation energy…

Q: Assuming an excess of substrate, if the enzyme concentration is doubled in a reaction vessel, the…

A: Reaction rate is an indication of the speed of the reaction. The reaction rate is directly…

Q: What distinguishes a linear metabolic pathway from a cyclic metabolic pathway?   A. The last step of…

A: Metabolic pathways are generally the description of the series of biochemical events that goes in…

Q: O C a. b. Ú Rate of Reaction d. of Reaction Rate of Reaction Rate of Reaction 100 Temperature (C)…

A: Given are four graphs depicting the relationship between rate of reaction and temperature. The best…

Q: Penicillin functions by inhibiting an enzyme, transpeptidase, that catalyzes the last step in the…

A: Introduction  The Penicillium fungi is the source of penicillin, one of the first and…

Q: A noncompetitive inhibitor (Circle one). a. Binds at the active site of the enzyme. b. Alters the…

A: During enzyme inhibition the inhibitors are bind to the enzyme and inhibit the activity of enzyme.…

Q: In the first step of glycolysis, glucose can be phosphorylated to glucose-6-phosphate, because.. A.…

A: Glycolysis refers to the metabolic process that converts glucose into pyruvate or pyruvic acid. It…

Q: Which of these statements about ATP is true?a.The bond joining ADP and the third phosphate is a…

A: Mitochondria: These are membrane bound organelle commonly known as powerhouse of cell. Both plant…

Q: Some enzymes function to breakdown harmful compounds that if allowed to accumulate could cause…

A: Given that the substance if accumulated in the cell will be harmful and may even cause death until…

Q: Suppose an enzyme and its substrate obey the lock and key model of enzyme catalysis. Which of the…

A: Enzymes are proteins which act as biocatalysts. Substrates bind with an enzyme at the active site.…

Q: You make a fresh fruit salad. To prevent them from turning brown, due to a reaction of the enzyme…

A: Phenolase It refers to the enzyme that catalyzes the oxidation reaction in certain fruits such as…

Q: For reactions to occur there needs to be what level of substrate and enzyme concentrations? Select…

A: When an enzyme comes into perfect contact with its substrate, a temporary molecule called the enzyme…

Q: A histidine was determined to be the critical residue involved in an enzyme-catalyzed reaction. If…

A: The pKa of histidine is 6.5, which means that it is in its protonated form (His+) at pH values below…

Q: You are performing an enzyme kinetics experiment testing the effect of pH on reaction rate. You…

A: Enzymes are the proteins that act as biological catalyst. They catalyze a biochemical reaction…

Q: Would you expect an “enzyme” designed to bind its target substrate as tightly as it binds the…

A: Enzymes increase the rate of a reaction by decreasing the activation energy. Activation energy is…

Q: Which of the following is incorrect about an enzyme-catalyzed reaction? a. Its progress can be…

A: Because reactant concentrations drop when reactants are transformed into products, reaction speeds…

Hematology

Hematology is the branch of biology. Hematology is the medical field that deals with the treatment of blood disorders and cancers, such as hemophilia, leukemia, lymphoma, and sickle-cell anemia. Hematologists and hematopathologists are medical professionals who specialize in illnesses of the blood and its components.