Which statement does not apply to transition states? A. only exist transiently (have lifetimes on the order of 10^-14 to 10^-13 seconds) B. differ in energy from the substrate by the activation energy C. Chemical bonds are in the process of being formed and broken. D. Many have been detected and purified experimentally.
Enzyme kinetics
In biochemistry, enzymes are proteins that act as biological catalysts. Catalysis is the addition of a catalyst to a chemical reaction to speed up the pace of the reaction. Catalysis can be categorized as either homogeneous or heterogeneous, depending on whether the catalysts are distributed in the same phase as that of the reactants. Enzymes are an essential part of the cell because, without them, many organic processes would slow down and thus will affect the processes that are important for cell survival and sustenance.
Regulation of Enzymes
A substance that acts as a catalyst to regulate the reaction rate in the living organism's metabolic pathways without itself getting altered is an enzyme. Most of the biological reactions and metabolic pathways in the living systems are carried out by enzymes. They are specific for their works and work in particular conditions. It maintains the best possible rate of reaction in the most stable state. The enzymes have distinct properties as they can proceed with the reaction in any direction, their particular binding sites, pH specificity, temperature specificity required in very few amounts.
Which of the following is true for the induced-fit model of enzyme-substrate binding?
A. The conformation of the enzyme’s active site changes when the enzyme binds to its substrate
B. Stronger interactions between the enzyme and its substrate are formed as compared to the lock-and-key model of enzyme-substrate binding
C. Both A and B
D. Neither A nor B
Which statement does not apply to transition states?
A. only exist transiently (have lifetimes on the order of 10^-14 to 10^-13 seconds)
B. differ in energy from the substrate by the activation energy
C.
D. Many have been detected and purified experimentally.
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