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