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