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