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