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Ch. 03 Module 2: Sec
a&p
| Question | Answer |
|---|---|
| Match the term with its definition: Hypotonic solution | A solution containing fewer solutes than the cell |
| In chemical signaling, which of the following is considered to be a second messenger? | Cyclic AMP |
| Pinocytosis is a type of __________. | endocytosis |
| Which of the following pairs is a correct match? | exocytosis: active membrane transport process |
| By which method does the following move into the cell molecules moving against the concentration gradient? | active transport mechanisms |
| Match the type of membrane transport with the appropriate characteristic: primary active transport | movement of a substance that utilizes a carrier; energy comes directly from hydrolysis of ATP |
| Match the type of membrane transport with the appropriate characteristic: secondary active transport. | Driven indirectly by energy stores in concentration gradients of ions |
| Match the term with its definition: hydrostatic pressure | The force of a liquid pushing against something |
| Which type of membrane transport process uses ATP as a source of energy? | Primary Active Transport Active transport processes use ATP. Notice the first letter in each word. |
| By which method does the following move into the cell: movement of large particles, bacteria, or cellular debris by endocytotic vehicle. | Phagocytosis |
| Correctly match the term and definition: the fusion of a vesicles with the plasma membrane to move substances out of the cell. | Exocytosis |
| The electrochemical gradient recognizes the effect of both electrical and concentration (chemical) forces. The electrochemical gradient applies to which of the following substances? | Sodium ions |
| Which of the following bonds to a specific receptor and initiated a response in a cell? | Ligand |
| Cells of the body mainly use __________ for the selective endocytosis of most macromolecules. | receptor-mediated endocytosis |
| Select the statement that is false regarding the resting membrane potential | The minus sign of the testing membrane potential indicates that the outside of the cell is negative indicates that the outside of the cell is negative compared to its inside. |
| Proteins in the cell membrane that bind hormones and relay messages into the interior of the cell __________. | perform a function known as signal transduction |
| Which of the following is true with regard to membrane potential? | Transient opening of gated Na+ and K+ channels in the plasma membrane is a normal means of activating neurons and muscle cells. |
| Match the term with its definition: osmotic pressure | The force that solutes have to attract water |
| By which method does the following move into the cell: movement of large particles, bacteria, or cellular debris by endocytoic vesicle | Phagocytosis |
| Cyanide poisoning prevents the production of ATP. If ATP were not available to drive the sodium-potassium pump, which of the following is most likely? | Na+ will leak back into the cell and being wafer with it causing cells to burst |
| Crenation takes place when a cell is placed in | hypertonic solution |
| The electrochemical gradient recognizes the effect of both electrical and concentration (chemical) forces. The electrochemical gradient applies to which of the following substances? | Sodium ions |
| A cell will swell, and likely burst, if it is placed in a(n) __________ solution. | hypotonic |
| In chemical signaling, which of the following is considered to be a second messenger? | Cyclic AMP |
| The resting membrane potential is mainly determined by | The concentration gradient of K+ and the differential permeability of the plasma membrane to K+ and other ions |
| The sodium- potassium pump helps to maintain the concentration gradients for sodium and potassium ions across the plasma membrane. Select the true statement regarding the sodium-potassium pump | For each molecule of ATP used, the pump moves three positively charged sodium ions out of the cell. |
| Correctly match the term and definition: endocytosis of a tiny quantity of extracellular fluid containing solute molecules | pinocytosis |
| Correctly match the term and definition: vesicular transport that moved substances into cells | Endocytosis |
Created by:
dgs24