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