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