A) stop B) slow down C) go in different directions D) speed up
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) alter equilibrium conditions B) not be reused C) break down more starch molecules D) change its shape to adapt to different reactant
A) lowering the pH B) increasing the temperature C) changing the ionic concentration D) participating in chemical reactions
A) alters the active site of the enzyme B) neutralizes the acids and bases in the system C) changes the pH of the system D) increases the concentration of the enzyme
A) they have to have some way to use up the protein that they consume 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) enzymes are quickly used up
A) pH B) ionic conditions C) temperature D) concentration of reactants
A) -ene B) -ase C) -ite D) -ose
A) are proteins B) are affected by temperature and pH C) all choices are correct D) speed up chemical reactions
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) temperature of the reaction B) speed of the reaction C) pH of the reaction D) products of the reaction
A) structure of the enzyme B) pH of the environment energy required C) amount of activation D) function of the reactants
A) ions B) enzymes C) sugars D) reactants
A) pH B) direction C) rate D) equilibrium
A) at low temperatures B) under low pressure C) in a high-saline environment D) within a limited pH range
A) electrical energy B) chemical energy C) activation energy D) mechanical energy
A) amylase is denatured at temperature below 37 degrees C B) the optimum temperature for amylase is 37 degrees C C) the lock-and-key model of enzyme action does not apply to amylase D) amylase can function only in the small intestine
A) inactive site B) organic molecule C) active site D) substrate
A) activation energy B) inhibitor C) catalyst D) active site
A) most enzymes can catalyze many different reactions B) enzymes are sent to specific substrates by ribosomes C) different enzymes are made in specific areas of the cytoplasm D) enzymes can only bind to specific substrates
A) . pinocytosis B) enzyme specificity C) sharing of electrons D) vacuole formation
A) proteins B) carbohydrates C) lipids D) nucleotides
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) protease B) manganese dioxide C) lipid D) galactose
A) pH of the environment of the reaction B) size of the substrate molecule C) temperature of the environment of the reaction D) number of enzyme molecules present |