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