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5 Written Questions

5 Matching Questions

  1. What is an isotonic solution?
  2. How is a phospholipid structured
  3. What is induced fit?
  4. How does active transport work?
  5. What is a substrate?
  1. a The protein receives the solute, ATP phosphorylates the protein, the protein changes shape which causes the solute to be launched on the other side of the membrane where it is more concentrated
  2. b When the active sight changes slightly to bind more tightly to the substrate
  3. c A specific reactant that an enzyme reacts on, fits into the active sight
  4. d With one phosphate group and two fatty acids, has hydrophilic head and hydrophobic tails
  5. e A solution whose pH is equal to that of the cell, the cell gains water as quickly as it loses it, stays the same

5 Multiple Choice Questions

  1. Enzymes, and Because enzymes act as biological catalysts that increases the rate of a reaction without itself being changed into a different molecule, smushes down energy barrier
  2. The tendency of a cell in a given solution to lose or gain water
  3. A chemical that resembles the enzymes normal substrate, binds to active sight, irreversible
  4. Endergonic reaction
  5. The hydrophilic heads face the outside of the membrane while the tails make up the inside, and only the nonpolar, hydrophobic molecules that are soluble in lipids can easily pass through the membrane

5 True/False Questions

  1. How is competitive inhibation prevented?Increasing the number of substrate molecules so theres less of a chance that the inhibitor will get to the active sight first


  2. Are inhibitors always harmful?No, enzyme inhibition often used for regulation cell metabolism


  3. What is an exergonic reaction?A reaction that requires energy, its products have more energy than its reactants, energy is absorbed through surroundings as reaction occurs, energy stored in covalent bonds of product molecules


  4. What is diffusion?The diffusion of water across a selectively permeable membrane


  5. How does it switch to ADP?When theres more water on one side of the membrane than the other, then the water molecules on the side with more water bind to the solute molecules in order to equal out the amount of water on both sides, because now there are less free water molecules on the side where there was once more. This creates an equilibrium


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