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