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