A) stop B) speed up C) slow down D) go in different directions
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) alter equilibrium conditions B) break down more starch molecules C) not be reused D) change its shape to adapt to different reactant
A) lowering the pH B) changing the ionic concentration C) increasing the temperature D) participating in chemical reactions
A) changes the pH of the system B) neutralizes the acids and bases in the system C) increases the concentration of the enzyme D) alters the active site of the enzyme
A) enzymes are quickly used up 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) they have to have some way to use up the protein that they consume
A) pH B) temperature C) ionic conditions D) concentration of reactants
A) -ose B) -ite C) -ase D) -ene
A) are proteins B) all choices are correct C) speed up chemical reactions D) are affected by temperature and pH
A) providing the substrate required for the reaction to occur B) combining with excess hydrogen to form gaseous wastes C) absorbing water released when polymers are formed D) affecting the rate at which reactions occur
A) products of the reaction B) speed of the reaction C) temperature of the reaction D) pH of the reaction
A) structure of the enzyme B) pH of the environment energy required C) function of the reactants D) amount of activation
A) enzymes B) reactants C) ions D) sugars
A) rate B) direction C) equilibrium D) pH
A) at low temperatures B) in a high-saline environment C) under low pressure D) within a limited pH range
A) activation energy B) mechanical energy C) electrical energy D) chemical energy
A) amylase is denatured at temperature below 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) the optimum temperature for amylase is 37 degrees C
A) substrate B) organic molecule C) active site D) inactive site
A) catalyst B) inhibitor C) active site D) activation energy
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) . pinocytosis B) enzyme specificity C) sharing of electrons D) vacuole formation
A) carbohydrates B) lipids C) proteins D) nucleotides
A) require activation energy for a reaction to occur B) prevent reactions from occurring spontaneously C) permanently blind to reactants, allowing a reaction to occur D) raise the activation energy until a reaction begins
A) lipid B) manganese dioxide C) galactose D) protease
A) size of the substrate molecule B) pH of the environment of the reaction C) number of enzyme molecules present D) temperature of the environment of the reaction |