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