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