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