A) stop B) slow down C) speed up D) go in different directions
A) one kind of enzymes that promotes thousands of different chemical reactions B) thousands of different enzymes, each prompting a different reaction C) approximately 100 kinds of enzymes, each promoting a different chemical reaction D) one enzyme that promotes photosynthesis and one enzymes that promotes cellular respiration
A) not be reused B) change its shape to adapt to different reactant C) alter equilibrium conditions D) break down more starch molecules
A) increasing the temperature B) lowering the pH C) participating in chemical reactions D) changing the ionic concentration
A) alters the active site of the enzyme B) neutralizes the acids and bases in the system C) increases the concentration of the enzyme D) changes the pH of the system
A) enzymes are quickly used up B) they have to have some way to use up the protein that they consume 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) concentration of reactants B) temperature C) pH D) ionic conditions
A) -ite B) -ose C) -ase D) -ene
A) are proteins B) are affected by temperature and pH C) all choices are correct D) speed up chemical reactions
A) providing the substrate required for the reaction to occur B) affecting the rate at which reactions occur C) combining with excess hydrogen to form gaseous wastes D) absorbing water released when polymers are formed
A) temperature of the reaction B) pH of the reaction C) products of the reaction D) speed of the reaction
A) function of the reactants B) structure of the enzyme C) amount of activation D) pH of the environment energy required
A) enzymes B) ions C) reactants D) sugars
A) direction B) rate C) pH D) equilibrium
A) within a limited pH range B) at low temperatures C) in a high-saline environment D) under low pressure
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) amylase is denatured at temperature below 37 degrees C C) amylase can function only in the small intestine D) the optimum temperature for amylase is 37 degrees C
A) inactive site B) active site C) organic molecule D) substrate
A) active site B) catalyst C) inhibitor D) activation energy
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) . pinocytosis B) sharing of electrons C) enzyme specificity D) vacuole formation
A) nucleotides B) carbohydrates C) proteins D) lipids
A) require activation energy for a reaction to occur B) raise the activation energy until a reaction begins C) prevent reactions from occurring spontaneously D) permanently blind to reactants, allowing a reaction to occur
A) lipid B) galactose C) protease D) manganese dioxide
A) size of the substrate molecule B) pH of the environment of the reaction C) temperature of the environment of the reaction D) number of enzyme molecules present |