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