A) stop B) speed up C) slow down 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) participating in chemical reactions C) changing the ionic concentration D) lowering the pH
A) alters the active site of the enzyme B) changes the pH of the system C) increases the concentration of the enzyme D) neutralizes the acids and bases in the system
A) enzymes are quickly used up 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) they have to have some way to use up the protein that they consume
A) ionic conditions B) concentration of reactants C) pH D) temperature
A) -ite B) -ene C) -ase D) -ose
A) are affected by temperature and pH B) speed up chemical reactions C) are proteins D) all choices are correct
A) combining with excess hydrogen to form gaseous wastes B) affecting the rate at which reactions occur C) providing the substrate required for the reaction to occur D) absorbing water released when polymers are formed
A) products of the reaction B) speed of the reaction C) temperature of the reaction D) pH of the reaction
A) function of the reactants B) structure of the enzyme C) pH of the environment energy required D) amount of activation
A) ions B) reactants C) sugars D) enzymes
A) pH B) direction C) equilibrium D) rate
A) under low pressure B) in a high-saline environment C) within a limited pH range D) at low temperatures
A) chemical energy B) mechanical energy C) electrical energy D) activation 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) active site B) inactive site C) substrate D) organic molecule
A) inhibitor B) activation energy C) active site D) catalyst
A) most enzymes can catalyze many different reactions B) different enzymes are made in specific areas of the cytoplasm C) enzymes are sent to specific substrates by ribosomes D) enzymes can only bind to specific substrates
A) . pinocytosis B) sharing of electrons C) enzyme specificity D) vacuole formation
A) nucleotides B) lipids C) proteins D) carbohydrates
A) require activation energy for a reaction to occur B) prevent reactions from occurring spontaneously C) raise the activation energy until a reaction begins D) permanently blind to reactants, allowing a reaction to occur
A) lipid B) manganese dioxide C) protease 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 |