A) slow down B) stop C) go in different directions D) speed up
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) break down more starch molecules B) change its shape to adapt to different reactant C) alter equilibrium conditions D) not be reused
A) participating in chemical reactions B) increasing the temperature C) lowering the pH D) changing the ionic concentration
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) 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) pH B) temperature C) ionic conditions D) concentration of reactants
A) -ose B) -ene C) -ase D) -ite
A) are affected by temperature and pH B) all choices are correct C) speed up chemical reactions D) are proteins
A) affecting the rate at which reactions occur B) providing the substrate required for the reaction to occur C) absorbing water released when polymers are formed D) combining with excess hydrogen to form gaseous wastes
A) products of the reaction B) pH of the reaction C) speed of the reaction D) temperature of the reaction
A) pH of the environment energy required B) amount of activation C) function of the reactants D) structure of the enzyme
A) reactants B) ions C) sugars D) enzymes
A) equilibrium B) rate C) direction D) pH
A) within a limited pH range B) in a high-saline environment C) at low temperatures D) under low pressure
A) activation energy B) mechanical energy C) electrical energy D) chemical energy
A) amylase can function only in the small intestine B) the lock-and-key model of enzyme action does not apply to amylase C) amylase is denatured at temperature below 37 degrees C D) the optimum temperature for amylase is 37 degrees C
A) inactive site B) active site C) organic molecule D) substrate
A) inhibitor B) catalyst C) active site D) activation energy
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) sharing of electrons B) . pinocytosis C) enzyme specificity D) vacuole formation
A) nucleotides B) lipids C) proteins D) carbohydrates
A) permanently blind to reactants, allowing a reaction to occur B) raise the activation energy until a reaction begins C) prevent reactions from occurring spontaneously D) require activation energy for a reaction to occur
A) manganese dioxide B) protease C) lipid D) galactose
A) number of enzyme molecules present B) size of the substrate molecule C) temperature of the environment of the reaction D) pH of the environment of the reaction |