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