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