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