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