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