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