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