AP BIOLOGY

THE CELL

STRUCTURE AND FUNCTION OF THE CELL

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
____ form the two layers of the cell membrane.
A
Carbohydrates
B
Proteins
C
Phospholipids
D
Cholesterol
Explanation: 

Detailed explanation-1: -Phospholipids are made up of two layers, the outer and inner layers. The inside layer is made of hydrophobic fatty acid tails, while the outer layer is made up of hydrophilic polar heads that are pointed toward the water.

Detailed explanation-2: -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-3: -The two major components of cell membranes are phospholipids and protein. Phospholipids are a unique type of lipid that have both hydrophilic and hydrophobic parts.

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