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