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