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