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