A) slow down B) stop C) speed up D) go in different directions
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) alter equilibrium conditions B) not be reused C) break down more starch molecules D) change its shape to adapt to different reactant
A) participating in chemical reactions B) increasing the temperature C) changing the ionic concentration D) lowering the pH
A) alters the active site of the enzyme B) increases the concentration of the enzyme C) changes the pH of the system D) neutralizes the acids and bases in the system
A) enzymes are quickly used up B) most cellular reactions require a specific, unique enzyme 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) pH C) ionic conditions D) temperature
A) -ite B) -ase C) -ene D) -ose
A) are affected by temperature and pH B) speed up chemical reactions C) are proteins D) all choices are correct
A) providing the substrate required for the reaction to occur B) absorbing water released when polymers are formed C) affecting the rate at which reactions occur D) combining with excess hydrogen to form gaseous wastes
A) products of the reaction B) temperature of the reaction C) speed of the reaction D) pH of the reaction
A) function of the reactants B) pH of the environment energy required C) structure of the enzyme D) amount of activation
A) reactants B) ions C) sugars D) enzymes
A) rate B) equilibrium C) direction D) pH
A) at low temperatures B) within a limited pH range C) under low pressure D) in a high-saline environment
A) activation energy B) mechanical energy C) electrical energy D) chemical 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) organic molecule D) inactive site
A) activation energy B) catalyst 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) most enzymes can catalyze many different reactions D) enzymes can only bind to specific substrates
A) . pinocytosis B) sharing of electrons C) enzyme specificity D) vacuole formation
A) carbohydrates B) proteins C) lipids D) nucleotides
A) permanently blind to reactants, allowing a reaction to occur B) raise the activation energy until a reaction begins C) prevent reactions from occurring spontaneously D) require activation energy for 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) pH of the environment of the reaction D) temperature of the environment of the reaction |