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