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प्रश्न
Which of the following statements is not true for plasma membrane?
विकल्प
It is present in both plant and animal cell
Lipid is present as a bilayer in it
Proteins are present integrated as well as loosely associated with the lipid bilayer
Carbohydrate is never found in it
उत्तर
Carbohydrate is never found in it
Explanation:
The main components of plasma membrane are lipids, proteins, and carbohydrates. The plasma membrane is a phospholipid bilayer which makes a stable barrier between two aqueous compartments. Proteins are embedded within this phospholipid bilayer and carbohydrates are always found on the exterior surface of cells and bound to proteins and form glycoproteins.
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संबंधित प्रश्न
What is a mesosome in a prokaryotic cell? Mention the functions that it performs.
Select the INCORRECT statements from the following
- In plasma membrane hydrophilic polar heads of lipids arrange towards the outer side and the hydrophobic tail towards the inner side
- In plasma membrane peripheral proteins lie on the surface of membrane while the integrated proteins are buried in the membrane
- Neutral solutes may move across the membrane by the process of simple diffusion against the concentration gradient
- Polar molecules can pass through the non-polar lipid bilayer and do not require a carrier protein
The correct answer is
Cell envelope of prokaryotes consists of
Who proposed the fluid mosaic model of plasma membrane?
The stain used to visualise motochondria is ______.
