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