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