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