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