A) stop B) go in different directions C) speed up D) slow down
A) approximately 100 kinds of enzymes, each promoting a different chemical reaction B) one kind of enzymes that promotes thousands of different chemical reactions C) one enzyme that promotes photosynthesis and one enzymes that promotes cellular respiration D) thousands of different enzymes, each prompting a different reaction
A) alter equilibrium conditions B) change its shape to adapt to different reactant C) not be reused D) break down more starch molecules
A) changing the ionic concentration B) lowering the pH C) participating in chemical reactions D) increasing the temperature
A) changes the pH of the system B) neutralizes the acids and bases in the system C) increases the concentration of the enzyme D) alters the active site of the enzyme
A) they have to have some way to use up the protein that they consume B) enzymes are quickly used up C) they have to have some way to use up the protein that they consume D) most cellular reactions require a specific, unique enzyme
A) temperature B) ionic conditions C) pH D) concentration of reactants
A) -ene B) -ose C) -ase D) -ite
A) all choices are correct B) speed up chemical reactions C) are proteins D) are affected by temperature and pH
A) absorbing water released when polymers are formed B) combining with excess hydrogen to form gaseous wastes C) affecting the rate at which reactions occur D) providing the substrate required for the reaction to occur
A) products of the reaction B) speed of the reaction C) pH of the reaction D) temperature of the reaction
A) function of the reactants B) pH of the environment energy required C) amount of activation D) structure of the enzyme
A) reactants B) ions C) sugars D) enzymes
A) direction B) rate C) pH D) equilibrium
A) in a high-saline environment B) at low temperatures C) within a limited pH range D) under low pressure
A) activation energy B) electrical energy C) chemical energy D) mechanical energy
A) the lock-and-key model of enzyme action does not apply to amylase B) amylase can function only in the small intestine C) amylase is denatured at temperature below 37 degrees C D) the optimum temperature for amylase is 37 degrees C
A) organic molecule B) active site C) substrate D) inactive site
A) activation energy B) inhibitor C) active site D) catalyst
A) most enzymes can catalyze many different reactions B) enzymes can only bind to specific substrates C) enzymes are sent to specific substrates by ribosomes D) different enzymes are made in specific areas of the cytoplasm
A) . pinocytosis B) vacuole formation C) sharing of electrons D) enzyme specificity
A) proteins B) carbohydrates C) lipids D) nucleotides
A) permanently blind to reactants, allowing a reaction to occur B) raise the activation energy until a reaction begins C) prevent reactions from occurring spontaneously D) require activation energy for a reaction to occur
A) galactose B) manganese dioxide C) lipid D) protease
A) pH of the environment of the reaction B) size of the substrate molecule C) temperature of the environment of the reaction D) number of enzyme molecules present |