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