A) slow down B) speed up C) go in different directions 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) 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) break down more starch molecules D) not be reused
A) changing the ionic concentration B) participating in chemical reactions C) lowering the pH 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) most cellular reactions require a specific, unique enzyme B) enzymes are quickly used up 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) ionic conditions C) temperature D) pH
A) -ose B) -ene C) -ite D) -ase
A) all choices are correct B) are proteins C) speed up chemical reactions D) are affected by temperature and pH
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) temperature of the reaction B) products of the reaction C) speed of the reaction D) pH of the reaction
A) amount of activation B) structure of the enzyme C) pH of the environment energy required D) function of the reactants
A) reactants B) ions C) sugars D) enzymes
A) rate B) pH C) direction D) equilibrium
A) in a high-saline environment B) at low temperatures C) under low pressure D) within a limited pH range
A) activation energy B) electrical energy C) chemical energy D) mechanical energy
A) amylase can function only in the small intestine B) the optimum temperature for amylase is 37 degrees C C) amylase is denatured at temperature below 37 degrees C D) the lock-and-key model of enzyme action does not apply to amylase
A) inactive site B) substrate C) active site D) organic molecule
A) activation energy B) inhibitor C) active site D) catalyst
A) different enzymes are made in specific areas of the cytoplasm B) most enzymes can catalyze many different reactions C) enzymes are sent to specific substrates by ribosomes D) enzymes can only bind to specific substrates
A) . pinocytosis B) vacuole formation C) sharing of electrons D) enzyme specificity
A) lipids B) nucleotides C) carbohydrates D) proteins
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) manganese dioxide B) lipid C) protease D) galactose
A) size of the substrate molecule B) number of enzyme molecules present C) temperature of the environment of the reaction D) pH of the environment of the reaction |