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