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Amphipathic molecule in pasma membrane is -
  • a)
    Protein
  • b)
    Carbohydrates
  • c)
    Phospholipids
  • d)
    All the above
Correct answer is option 'C'. Can you explain this answer?
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Amphipathic molecule in pasma membrane is -a)Proteinb)Carbohydratesc)P...
The lipids in the plasma membrane are phospholipids with one polar hydrophilic head and two nonpolar hydrophobic tail. Thus, the lipids are amphipathic. The hydrophilic head is exposed to the surface whereas the hydrophobic tail is embedded in the inner region of the membrane.
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Amphipathic molecule in pasma membrane is -a)Proteinb)Carbohydratesc)P...
Amphipathic molecule have parts that are hydrophobic and parts that are hydrophilic the 2 hydrocarbon tall of phospholipid are composed of chain of carbon atom non covalently bonds to hydrogen tail making the tails hydrophobic. the phosphate group one the phospholipid head is charged making it hydrophilic the amphipathic nature allows bilayered to form the hydrophobic turning inward away from the aqueous environment of inside and outside of the cell with the hydrophilic phosphate head being contact with water.
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Amphipathic molecule in pasma membrane is -a)Proteinb)Carbohydratesc)P...
All of the 
lipid molecules in cell membranes are amphipathic
 (or amphiphillic
)—that is, they have a hydrophilic (“water-loving”) or polar end and a hydrophobic (“water-fearing”) or nonpolar end. The most abundant 
membrane
 lipids are the 
phospholipids
. These have a polar head group and two hydrophobic hydrocarbon tails.
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Attempt All sub parts from each question.Molecular Perspective In water, there are two types of molecules. Some molecules are at the surface, called exterior molecules, and some molecules are inside, called interior molecules. The interior molecules are attracted to all the molecules around them. The exterior molecules are attracted to only the other surface molecules and to those below the surface. So that the energy state of the molecules on the interior is much lower than that of the molecules on the exterior. The molecules always try to maintain a lower energy state and hence the exterior molecules experience a downward force. This force is known as cohesive force. As a result they try to maintain a minimum surface area, thus allowing more molecules to have a lower energy state. Thus surface tension is created. The water molecules attract one another due to the water molecule’s polar property. The hydrogen ends, which are positive in comparison to the negative ends of the oxygen, cause water to "stick " together. This is why there is surface tension. Water has very high surface tension. It is 72.8 milli newton per meter at 20°C.Q. Which one of the following is the correct molecular structure of water molecule?

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Amphipathic molecule in pasma membrane is -a)Proteinb)Carbohydratesc)Phospholipidsd)All the aboveCorrect answer is option 'C'. Can you explain this answer?
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