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