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