OBJECTIVE FORESTRY

FORESTRY

GENETICS TREE IMPROVEMENT

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
The plasma membrane in a eukaryotic cell mainly consists of which of the following?
A
a phospholipid bilayer with proteins embedded in the layer
B
a protein bilayer with phospholipids embedded in the layers
C
a hydrophilic head and a hydrophobic tail
D
a phospholipid layer and a protein layer
Explanation: 

Detailed explanation-1: -A plasma membrane consists of a lipid bilayer. This lipid bilayer is made up of an upper hydrophilic lipid layer, and a lower hydrophobic lipid layer. The plasma membrane contains transport protein . The proteins are embedded in the phospholipid bilayer.

Detailed explanation-2: -The phospholipid bilayer consists of two layers of phospholipids, with a hydrophobic, or water-hating, interior and a hydrophilic, or water-loving, exterior. The hydrophilic (polar) head group and hydrophobic tails (fatty acid chains) are depicted in the single phospholipid molecule.

Detailed explanation-3: -Four major phospholipids predominate in the plasma membrane of many mammalian cells: phosphatidylcholine, phosphatidylethanolamine, phosphatidylserine, and sphingomyelin.

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