A) stop B) go in different directions C) slow down D) speed up
A) approximately 100 kinds of enzymes, each promoting a different chemical reaction B) one enzyme that promotes photosynthesis and one enzymes that promotes cellular respiration C) thousands of different enzymes, each prompting a different reaction D) one kind of enzymes that promotes thousands of different chemical reactions
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) participating in chemical reactions D) changing the ionic concentration
A) increases the concentration of the enzyme B) neutralizes the acids and bases in the system C) alters the active site of the enzyme D) changes the pH of the system
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) enzymes are quickly used up D) they have to have some way to use up the protein that they consume
A) temperature B) ionic conditions C) pH D) concentration of reactants
A) -ase B) -ene C) -ite D) -ose
A) all choices are correct B) are proteins C) speed up chemical reactions D) are affected by temperature and pH
A) combining with excess hydrogen to form gaseous wastes B) absorbing water released when polymers are formed C) providing the substrate required for the reaction to occur D) affecting the rate at which reactions occur
A) temperature of the reaction B) products of the reaction C) pH of the reaction D) speed of the reaction
A) structure of the enzyme B) amount of activation C) function of the reactants D) pH of the environment energy required
A) enzymes B) reactants C) ions D) sugars
A) equilibrium B) rate C) direction D) pH
A) in a high-saline environment B) at low temperatures C) within a limited pH range D) under low pressure
A) chemical energy B) activation energy C) electrical energy D) mechanical energy
A) amylase can function only in the small intestine B) amylase is denatured at temperature below 37 degrees C 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) substrate B) active site C) inactive site D) organic molecule
A) catalyst B) active site C) inhibitor D) activation energy
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) vacuole formation C) enzyme specificity D) . pinocytosis
A) carbohydrates B) proteins C) lipids D) nucleotides
A) prevent reactions from occurring spontaneously B) permanently blind to reactants, allowing a reaction to occur C) require activation energy for a reaction to occur D) raise the activation energy until a reaction begins
A) protease B) galactose C) manganese dioxide D) lipid
A) number of enzyme molecules present B) pH of the environment of the reaction C) size of the substrate molecule D) temperature of the environment of the reaction |