Metabolism & Enzyme Catalysis Lab

Reactants capable of interacting to form products in a chemical reaction must first overcome a thermodynamic barrier known as the reactions'

activation energy

How does a noncompetitive inhibitor decrease the rate of an enzyme reaction?

by changing the shape of the enzymes active site

A system at chemical equilibrium

can no do work

Which term most precisely describes the cellular process of breaking down large molecules into smaller ones?

catabolism

Which of the following is a statement of the first law of thermodynamics?

energy cannot be created or destroyed

Which of the following statements regarding enzymes is true?

enzymes increases the rate of a reaction by lowering the activation energy barrier

The mechanism in which the end product of a metabolic pathway inhibits an earlier step in the pathway is most precisely described as

feedback inhibition

The active site of an enzyme is the region that

is involved in the catalytic reaction of the enzyme

Which of the following is true of metabolism in its entirety in all organisms?

metabolism consists of all the energy transformation reactions in an organism

For living organisms, which of the following is an important consequence of the first law of thermodynamics?

the organism ultimately must obtain all of the necessary energy for life from its environment

Which of the following statements is true about enzyme-catalyzed reactions?

the reaction is faster than the same reaction in the absence of the enzyme

Which of the follow is (are) true for anabolic pathways?

they consume energy to build up polymers from monomers

Which of the following statements is true concerning catabolic pathways?

they supply energy that is released during catabolic reactions, primarily in the form of ATP, for the cells work