1O. Because the Na -K Pump imports K ions while exporting Na\" ions, it is a pum
ID: 253710 • Letter: 1
Question
1O. Because the Na -K Pump imports K ions while exporting Na" ions, it is a pump termed a. symporter b. antiporter e. uniporter d. ion channel 11. In a red blood cell with an internal solute concentration of about o.sssis placed in OS% glucose solution, which of the following will most likely happen? The red blood cell will lose water and shrink a. b. The red blood cell will gain water and burst d. turgor pressure in the cell will greatly increase The cell will remain the same The cell will plasmolyzed e. 12. Human growth hormone (a membrane. This protein is called a (an) a. ligand b. transport protein e. receptor protein d. adhesion proteirn 13. A liquid can enter a cell through_ a. exocytosis b. phagocytosis c. pinocytosis d. receptor-mediated endoeytosis 14. Transport of hydrophobie substances (such as O, and Co,) across cellular membranes through phospholipid bilayer is termed a. simple diffusion b. facilitated diffusion c. osmosis d. active transport ns have complex glassy structures in their cell walls. These structures form within ratus. How do these structures reach the cell wall without having to pass the Golgi appa through a membrane? a. active transport b. facilitated diffusion c. exocytosis d. simple diffusion e. endocytosis 16. Pressure that develops within a living plant cell as a result of water entering the cell is called a. turgor pressure b. water pressure c. mechanic pressure d. air pressure 17. Facilitated diffusion and active transport both a. require ATP b. require a membrane protein c. transport molecules in only one direction d. transport hydrophobic molecules 18. Calcium ions (Ca2") can be actively transported across a cellular membrane in muscle. What types of molecules are required for this to happen?Explanation / Answer
10) answer is B- N+ -K+ pump is antiporter.because 2 ions of same charge are transported in opposite directions. So it is called as antiporter.
11) answer is B - cell will gain water and burst. Water will move from its high concentration to low concentration. So water present in outside solution is more than inside RBC. So it will move from outside to inside of cell. So cell will gain water and burst.
12) answer is c- receptor protein. Usually hormones bind to receptor present on plasma membrane so they can perform there function. These receptor proteins are usually glycosylated proteins.
13) answer is c- liquid enters cell through pinocytosis. When liquid is taken inside cell also called as drinking of cell.phagocytosis is eating of cell.
17) answer is B. Facilitated diffusion and active transport both require membrane proteins. Facilitated diffusion occurs by using ion channels or transporters without using ATP and active transport occurs through pump using ATP.
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