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