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