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