Assume that a single layer of phospholipids coat the water in a beaker. which part of the phospholipid molecule will face the ai
r? a.the phosphate groups
b.the hydrocarbon tails
c.the phospholipids would dissolve and not form a membrane coat
d.both heads and tails as the molecules are amphipathic and will lie sideways
A phospholipid molecule comprises of a head group (that contains polar phosphate molecule) that is hydrophilic ( water attracting groups due to formation of hydrogen bonding or ionic bonds with water molecules) and two tails of fatty acid ( which are hydrophobic that is water repelling groups).
In this question, a single layer of phospholipid coats the water in a beaker. This means that head group of this layer is in contact of water ( present in the beaker) and the two fatty acid tails of hydrocarbon ( that are water repelling) are facing air.
The part of the phospholipid molecule that will face the water, as it is labelled to be hydrophilic would be the polar phosphate group. The correct response would be A.
Explanation: In hypertonic solutions solute concentration is higher that those inside the cells. That means there is a different pressure in and out of the cell and in order to reach the equilibrium the cell has to release water to the medium and ever the concentration. As a result of this stressful conditions cells shrink which make pickles smaller.
