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