A) stop B) slow down C) go in different directions D) speed up
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) alter equilibrium conditions B) not be reused C) break down more starch molecules D) change its shape to adapt to different reactant
A) participating in chemical reactions B) changing the ionic concentration C) lowering the pH D) increasing the temperature
A) neutralizes the acids and bases in the system B) increases the concentration of the enzyme C) changes the pH of the system D) alters the active site of the enzyme
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) temperature B) pH C) ionic conditions D) concentration of reactants
A) -ene B) -ase C) -ite D) -ose
A) speed up chemical reactions B) are proteins C) all choices are correct D) are affected by temperature and pH
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) temperature of the reaction B) pH of the reaction C) speed of the reaction D) products of the reaction
A) pH of the environment energy required B) structure of the enzyme C) function of the reactants D) amount of activation
A) sugars B) enzymes C) reactants D) ions
A) rate B) direction C) pH D) equilibrium
A) under low pressure B) within a limited pH range C) at low temperatures D) in a high-saline environment
A) activation energy B) mechanical energy C) chemical 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) organic molecule B) inactive site C) active site D) substrate
A) catalyst B) activation energy C) active site D) inhibitor
A) enzymes are sent to specific substrates by ribosomes B) enzymes can only bind to specific substrates C) different enzymes are made in specific areas of the cytoplasm D) most enzymes can catalyze many different reactions
A) vacuole formation B) . pinocytosis C) sharing of electrons D) enzyme specificity
A) carbohydrates B) proteins C) lipids D) nucleotides
A) prevent reactions from occurring spontaneously B) permanently blind to reactants, allowing a reaction to occur C) require activation energy for a reaction to occur D) raise the activation energy until a reaction begins
A) lipid B) galactose C) manganese dioxide D) protease
A) pH of the environment of the reaction B) number of enzyme molecules present C) size of the substrate molecule D) temperature of the environment of the reaction |