A) go in different directions B) slow down C) stop D) speed up
A) one kind of enzymes that promotes thousands of different chemical reactions B) approximately 100 kinds of enzymes, each promoting a different chemical reaction C) one enzyme that promotes photosynthesis and one enzymes that promotes cellular respiration D) thousands of different enzymes, each prompting a different reaction
A) not be reused B) change its shape to adapt to different reactant C) alter equilibrium conditions D) break down more starch molecules
A) increasing the temperature B) participating in chemical reactions C) lowering the pH D) changing the ionic concentration
A) increases the concentration of the enzyme B) neutralizes the acids and bases in the system C) changes the pH of the system D) alters the active site of the enzyme
A) they have to have some way to use up the protein that they consume B) they have to have some way to use up the protein that they consume C) enzymes are quickly used up D) most cellular reactions require a specific, unique enzyme
A) concentration of reactants B) ionic conditions C) temperature D) pH
A) -ase B) -ene C) -ose D) -ite
A) speed up chemical reactions B) are proteins C) all choices are correct 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) pH of the reaction B) speed of the reaction C) products of the reaction D) temperature of the reaction
A) pH of the environment energy required B) structure of the enzyme C) amount of activation D) function of the reactants
A) enzymes B) reactants C) sugars D) ions
A) equilibrium B) rate C) direction D) pH
A) within a limited pH range B) at low temperatures C) under low pressure D) in a high-saline environment
A) chemical energy B) electrical energy C) mechanical energy D) activation energy
A) the optimum temperature for amylase is 37 degrees C B) the lock-and-key model of enzyme action does not apply to amylase C) amylase can function only in the small intestine D) amylase is denatured at temperature below 37 degrees C
A) substrate B) inactive site C) active site D) organic molecule
A) activation energy B) active site C) inhibitor D) catalyst
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) enzyme specificity B) . pinocytosis C) vacuole formation D) sharing of electrons
A) proteins B) lipids C) nucleotides D) carbohydrates
A) prevent reactions from occurring spontaneously B) require activation energy for a reaction to occur C) permanently blind to reactants, allowing a reaction to occur D) raise the activation energy until a reaction begins
A) lipid B) manganese dioxide C) galactose D) protease
A) pH of the environment of the reaction B) size of the substrate molecule C) number of enzyme molecules present D) temperature of the environment of the reaction |