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Bio test #2 part 2
| Question | Answer |
|---|---|
| Carrier-mediated transport is also called | facilitated diffusion. |
| Oxidation and reduction reactions are chemical processes that result in a gain or loss in | electrons. |
| After getting off the ski lift, you choose a trail that requires you to ski up a small incline before beginning the downward section of the trail. In this scenario, the hill is analogous to | activation energy. |
| The actual transport of protons by the proton pump is mediated by a transmembrane protein which undergoes a change in its | conformation. |
| Enzymes are very specific in their choices of substrates because each different enzyme has an active site that | is shaped to fit a certain substrate molecule. |
| The following are all functions of a typical plasma membrane except | permanence in composition. |
| The plasma membrane is a thin sheet of lipid embedded with | proteins. |
| One of the most important coenzymes that accepts electrons/hydrogens is | NAD+ |
| If two solutions have unequal concentrations of a solute, the solution with the lower concentration is called | hypotonic. |
| In an enzyme catalyzed reaction the reactant is called the | substrate. |
| The First Law of Thermodynamics simply states that | energy cannot be created or destroyed, just changed from one form to another. |
| While standing at the top of the stairs, you have a potential energy of 40 Joules. If you walk all the way down the stairs, what would your potential energy be at the bottom of the stairs? | 0 Joules |
| If a cell has the same concentration of dissolved molecules as of its outside environment, the cell's condition is called as being | isotonic. |
| Molecules that act as a catalysts in biological systems are | enzymes. |
| RNA molecules that have been recently reported to act also as enzymes are given the name | ribozymes. |
| The organic non-protein components that aid in enzyme functioning are called | coenzymes. |
| One day during the summer you and some friends made ice cream using an electric ice cream maker. A few days later you noticed a yellow circle of dead grass where the ice cream freezer had been placed. What happened? | The ice and salt mixture was HYPEROSMOTIC to the grass cells and caused the yellow circle of dead grass. |
| The plasma membrane is a thin sheet of lipid embedded with | proteins. |
| The accumulation of amino acids and sugars in animal cells occurs through | coupled transport. |
| Incubation of cells at 20 degrees C blocks the release of proteins from the trans-Golgo. Under such conditions, you would expect to see | a decrease in exocytosis. |
| A phospholipid molecule has a polar and a non polar end. Because of this, water molecules form | hydrogen bonds with the polar end of the phospholipid molecule. |
| The accumulation of amino acids and sugars in animal cells occurs through | coupled transport. |
| During neuronal signaling, a change in membrane potential will cause sodium channels to open and let Na+ ions diffuse down their concentration gradient into the cell. Which helps establish the concentration gradient necessary for this process to occur? | Na+/K+ pump |
| Oxidation and reduction reactions are chemical processes that result in a gain or loss in | electrons. |
Created by:
evie mcintyre