A) slow down B) stop C) go in different directions 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) alter equilibrium conditions B) not be reused C) change its shape to adapt to different reactant D) break down more starch molecules
A) lowering the pH B) participating in chemical reactions C) changing the ionic concentration D) increasing the temperature
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) 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) pH C) ionic conditions D) temperature
A) -ose B) -ite C) -ene D) -ase
A) are affected by temperature and pH B) speed up chemical reactions C) all choices are correct D) are proteins
A) absorbing water released when polymers are formed B) affecting the rate at which reactions occur C) combining with excess hydrogen to form gaseous wastes D) providing the substrate required for the reaction to occur
A) products of the reaction B) speed of the reaction C) temperature of the reaction D) pH of the reaction
A) amount of activation B) function of the reactants C) structure of the enzyme D) pH of the environment energy required
A) reactants B) sugars C) enzymes D) ions
A) direction B) rate C) pH D) equilibrium
A) within a limited pH range B) in a high-saline environment C) under low pressure D) at low temperatures
A) mechanical energy B) chemical energy C) activation energy D) electrical 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 is denatured at temperature below 37 degrees C D) amylase can function only in the small intestine
A) inactive site B) organic molecule C) active site D) substrate
A) catalyst B) inhibitor C) activation energy D) active site
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) sharing of electrons B) enzyme specificity C) vacuole formation D) . pinocytosis
A) nucleotides B) lipids C) proteins D) carbohydrates
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) lipid B) galactose C) manganese dioxide 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 |