Biology - Membrane Transport
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Question 1 of 58
1. Question
Which of the following would be least likely to diffuse through a cell membrane without the helper a transport protein?
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Question 2 of 58
2. Question
The rate of diffusion of a specific substance through a plasma membrane is affected by all of the following except:
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Question 3 of 58
3. Question
Substance’X’ is the charged molecule of small molecular weight, It is found at higher concentrartion outside of cells than inside, How might substance’ X’ enter the cells?
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Question 4 of 58
4. Question
The function of channel proteins in membrane is to:
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Question 5 of 58
5. Question
In facilitated diffusion:
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Question 6 of 58
6. Question
Diffusion of water through a selectively permeable membrane is called:
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Question 7 of 58
7. Question
Osmosis is defined as:
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Question 8 of 58
8. Question
Osmosis involves diffusion through a semipermeable membrane of:
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Question 9 of 58
9. Question
Process of osmosis involves the movement of:
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Question 10 of 58
10. Question
” Osmosis is the flow of solution from higher concentration to solution of lower concentration through semipermeable membrane” What is incorrect in this statement?
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Question 11 of 58
11. Question
Which of the following experiment is called physiological demonstration of osmosis?
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Question 12 of 58
12. Question
IN osmosis , water always moves toward the _______ solution, that is, toward _______ the solution with the ______ solute concentration .
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Question 13 of 58
13. Question
RBCs undergo cremation when they are placed in:
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Question 14 of 58
14. Question
A cell is equally permeable to sucrose solution and Na CI solution, First the cell is put in 0.6 M sucrose solution there is no change in size but when ut in 0.6 M NaCI solution the size will:
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Question 15 of 58
15. Question
If a living plant cell is placed in a concentration sugar solution, the cell will:
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Question 16 of 58
16. Question
If a plant cell is placed in a solution less concentration than that of the cell sap, water from outside will enter into the protoplasm through the process of:
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Question 17 of 58
17. Question
A cell is placed in salt solution will:
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Question 18 of 58
18. Question
O.P. of a solution is:
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Question 19 of 58
19. Question
Which of the following is not cone rend with movement materials in and out of cells:
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Question 20 of 58
20. Question
Plasma membrane help in:
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Question 21 of 58
21. Question
In which of the following solution volume of a cell increases:
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Question 22 of 58
22. Question
A cell swells up when kept in:
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Question 23 of 58
23. Question
IN a plant cell, the shrinking of protoplasm is called:
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Question 24 of 58
24. Question
Phenomenon of plasmolysis occurs when cells are kept in:
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Question 25 of 58
25. Question
What does a cell show if placed in seawater ?
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Question 26 of 58
26. Question
A plant cell is placed in a solution whose solute concentration is twice as great as the concentration of cytoplasm. The plasma membrane is selectively permeable allowing water but not solutes to pass through. What happen to the cell?
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Question 27 of 58
27. Question
If a freshwater plant is put in seawater, its cell will:
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Question 28 of 58
28. Question
If a marine alga is put in freshwater. its surrounding would be:
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Question 29 of 58
29. Question
The concentration of solutes in a red blood cell is about 2% . Sucrose cannot pass through the membrane, but water and urea can. Osmosis would cause red blood cell s to shrink most when immersed in which of the following solutions?
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Question 30 of 58
30. Question
The concentration of calcium in a cell is 0.3%. The concentration of calcium in the surrounding fluid is 0.1% . How could the cell obtain more calcium?
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Question 31 of 58
31. Question
Movement of ions against concentration gradient is called:
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Question 32 of 58
32. Question
Movement of ions or molecules in a direction opposite to that of prevailing electro- chamical gradient is known as:
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Question 33 of 58
33. Question
Active transport in a cell occurs in:
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Question 34 of 58
34. Question
Active transport :
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Question 35 of 58
35. Question
Main difference between active and passive transport across cell membrane is that passive transport:
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Question 36 of 58
36. Question
Which of the following requires ATP?
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Question 37 of 58
37. Question
Which of the following is a difference between Active Transport (AT) and Facilitated Diffusion (FD)?
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Question 38 of 58
38. Question
The biomembranes allow active transport of substances because:
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Question 39 of 58
39. Question
The Na up +/K+ pump transports:
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Question 40 of 58
40. Question
Na+ – K+ dependent ATPase activity helps in transport of:
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Question 41 of 58
41. Question
Carrier molecules facilitating transport across cell membrane are:
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Question 42 of 58
42. Question
Carrier proteins are involved in:
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Question 43 of 58
43. Question
Enzyme that facilitates the transport through cell membrane is:
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Question 44 of 58
44. Question
Membrane proteins are:
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Question 45 of 58
45. Question
Which of the following enables a cell to pick up and concentrate a specific kind of molecule?
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Question 46 of 58
46. Question
The term ‘phagocytosis’ has been coined by:
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Question 47 of 58
47. Question
Phagocytosis may be characterized by which of the following statements?
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Question 48 of 58
48. Question
The blood cell which shows phagocytosis is:
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Question 49 of 58
49. Question
The process by which large molecules move out of the cell is called:
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Question 50 of 58
50. Question
Which of the following phenomena is commonly referred as ‘cell drinking’?
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Question 51 of 58
51. Question
Which of the following involves the nonselective uptake of tiny droplets of extracellular fluid?
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Question 52 of 58
52. Question
Pinocytosis is:
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Question 53 of 58
53. Question
A white blood cell is capable of producing and releasing thousands of antibody molecules every second. Antibodies are large, complex protein molecules. How would you expect them to leave the cell?
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Question 54 of 58
54. Question
Which of the following statements is correct?
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Question 55 of 58
55. Question
Macromolecules enter the plasma membrane of cells by:
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Question 56 of 58
56. Question
Phagosomes and pinosomes collectively referred to as:
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Question 57 of 58
57. Question
Size of molecules that can pass through plasma membrane is:
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Question 58 of 58
58. Question
The water soluble materials pass through the proteins called:
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