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