A) go in different directions B) speed up C) slow down D) stop
A) thousands of different enzymes, each prompting a different reaction B) one enzyme that promotes photosynthesis and one enzymes that promotes cellular respiration C) one kind of enzymes that promotes thousands of different chemical reactions D) approximately 100 kinds of enzymes, each promoting a different chemical reaction
A) not be reused B) change its shape to adapt to different reactant C) break down more starch molecules D) alter equilibrium conditions
A) lowering the pH B) changing the ionic concentration C) participating in chemical reactions D) increasing the temperature
A) alters the active site of the enzyme B) changes the pH of the system 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) 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) temperature B) pH C) concentration of reactants D) ionic conditions
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) affecting the rate at which reactions occur B) absorbing water released when polymers are formed C) providing the substrate required for the reaction to occur D) combining with excess hydrogen to form gaseous wastes
A) speed of the reaction B) pH of the reaction C) temperature of the reaction D) products of the reaction
A) function of the reactants B) pH of the environment energy required C) amount of activation D) structure of the enzyme
A) ions B) enzymes C) reactants D) sugars
A) direction B) equilibrium C) rate D) pH
A) within a limited pH range B) at low temperatures C) under low pressure D) in a high-saline environment
A) activation energy B) mechanical energy C) electrical 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) active site B) inactive site C) substrate D) organic molecule
A) inhibitor B) active site C) activation energy D) catalyst
A) enzymes can only bind to specific substrates B) most enzymes can catalyze many different reactions C) different enzymes are made in specific areas of the cytoplasm D) enzymes are sent to specific substrates by ribosomes
A) sharing of electrons B) vacuole formation C) enzyme specificity D) . pinocytosis
A) proteins B) lipids C) nucleotides D) carbohydrates
A) raise the activation energy until a reaction begins B) permanently blind to reactants, allowing a reaction to occur C) prevent reactions from occurring spontaneously D) require activation energy for a reaction to occur
A) manganese dioxide B) galactose C) lipid D) protease
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 |