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