A) stop B) speed up C) go in different directions D) slow down
A) thousands of different enzymes, each prompting a different reaction B) one enzyme that promotes photosynthesis and one enzymes that promotes cellular respiration C) approximately 100 kinds of enzymes, each promoting a different chemical reaction D) one kind of enzymes that promotes thousands of different chemical reactions
A) alter equilibrium conditions B) not be reused C) change its shape to adapt to different reactant D) break down more starch molecules
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) changes the pH of the system C) neutralizes the acids and bases in 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) they have to have some way to use up the protein that they consume C) most cellular reactions require a specific, unique enzyme D) enzymes are quickly used up
A) pH B) temperature C) concentration of reactants D) ionic conditions
A) -ite B) -ase C) -ene D) -ose
A) are proteins B) speed up chemical reactions C) are affected by temperature and pH D) all choices are correct
A) providing the substrate required for the reaction to occur B) absorbing water released when polymers are formed C) combining with excess hydrogen to form gaseous wastes D) affecting the rate at which reactions occur
A) speed of the reaction B) pH of the reaction C) temperature of the reaction D) products 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) enzymes B) sugars C) reactants D) ions
A) rate B) equilibrium C) pH D) direction
A) within a limited pH range B) at low temperatures C) under low pressure D) in a high-saline environment
A) activation energy B) electrical energy C) chemical energy D) mechanical energy
A) the lock-and-key model of enzyme action does not apply to amylase B) the optimum temperature for amylase is 37 degrees C C) amylase is denatured at temperature below 37 degrees C D) amylase can function only in the small intestine
A) inactive site B) active site C) organic molecule D) substrate
A) active site B) activation energy C) catalyst D) inhibitor
A) enzymes are sent to specific substrates by ribosomes B) most enzymes can catalyze many different reactions C) different enzymes are made in specific areas of the cytoplasm D) enzymes can only bind to specific substrates
A) vacuole formation B) sharing of electrons C) enzyme specificity D) . pinocytosis
A) carbohydrates B) proteins C) nucleotides D) lipids
A) raise the activation energy until a reaction begins B) require activation energy for a reaction to occur C) permanently blind to reactants, allowing a reaction to occur D) prevent reactions from occurring spontaneously
A) manganese dioxide B) galactose C) protease D) lipid
A) temperature of the environment of the reaction B) pH of the environment of the reaction C) number of enzyme molecules present D) size of the substrate molecule |