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Integral cell membrane proteins...

Integral cell membrane proteins

A

are partially embedded in lipid layers

B

are completely embedded in lipid layers

C

show lateral but not vertical movements within bilayer of lipid

D

All of these

Text Solution

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The correct Answer is:
D
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A student made a pictorial representation of a eukaryotic cell membrane and labelled the components as follows. The student has made errors whikle labelling the components membrane. Which of the following hold true regarding the error ? (i) Protein A should be labelled as trans-membrane protein only and not as integral protein. (ii) The polarity of the protein A should be reversed because the cytosolic phjase always shows reducing environment. (iii) Position of cholesterol molecule shouold be close to polar region as it contains a polar group. (iv) Protein B should be labelled as integral membrane protein and not as peripheral gltcoprotein.

Depending on the ease of extraction, membrane proteins can be classified as

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NCERT FINGERTIPS-CELL - THE UNIT OF LIFE-Cell - The Unit Of Life
  1. Select the incorrect statement regarding the plasma membrane.

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  2. Identify the components labelled as A, B, C and D in the given figure ...

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  3. Integral cell membrane proteins

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  4. The latest model of cell membrane is the

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  5. According to the modern concept, cell membrane is

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  6. The molecules in the membrane that limit its permeability are the

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  7. Who gave the lamellar or sandwich model of cell membrane ?

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  8. The fluid mosaic model explains which aspects of a cell membrane ?

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  9. Cell membrane is selective permeable. This means that it

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  10. Many molecules can move briefly across the membrane without any requir...

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  11. Choose the incorrect statement regarding cell membrane.

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  12. Which of the following is an energy dependent process ?

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  13. The function of intracellular membrane is not to

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  14. If you remove the cell wall from a plant cell and place it into a drop...

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  15. Continuity of cytoplasm from cell is maintained through cytoplasmic co...

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  16. Dye injected into a plant cell might be able to enter an adjacent cell...

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  17. Which organelle is not a part of the endomembrane system ?

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  18. A cell, which is very active in the synthesis and secretion of protein...

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  19. The cell organelle involved in the glycosylation of proteins is

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  20. isdirectly connected to the outer nuclear membrane.

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