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