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