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