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