LIFE SCIENCE

OBJECTIVE LIFE SCIENCE

CELL BIOLOGY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What does “bilayer” mean?
A
one layer
B
two layers
C
laminated
D
bilateral
Explanation: 

Detailed explanation-1: -bilayer. noun. bi·lay·er ˈbī-ˌlā-ər, -ˌle(-ə)r. : a film or membrane with two molecular layers. a bilayer of phospholipid molecules.

Detailed explanation-2: -The phospholipids in the plasma membrane are arranged in two layers, called a phospholipid bilayer, with a hydrophobic, or water-hating, interior and a hydrophilic, or water-loving, exterior.

Detailed explanation-3: -When cellular membranes form, phospholipids assemble into two layers because of these hydrophilic and hydrophobic properties. The phosphate heads in each layer face the aqueous or watery environment on either side, and the tails hide away from the water between the layers of heads, because they are hydrophobic.

Detailed explanation-4: -Lipid Bilayer Structure The structure is called a “lipid bilayer” because it is composed of two layers of fat cells organized in two sheets. The lipid bilayer is typically about five nanometers thick and surrounds all cells providing the cell membrane structure.

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