Answer: Option (a) is the correct answer.
Explanation:
A lipid that contains a phosphate group in its molecule is known as a phospholipid.
These are the primary molecules present in a plasma membrane. These tend to contain two hydrophobic fatty acid tails and one hydrophilic head.
Hydrophilic means water loving in nature.
As phosphate group is a polar group due to this the hydrophilic region present in a phospholipid is able to interact with water.
In an amino-alcohol modified phosphate, ester groups, and glycerol, the glycerol is hydrophobic in nature. It also contains two fatty acids and a phosphoric acid which are present as ester. The polar head that mainly consists of phosphate group is hydrophilic and thus, it helps in combining to a water molecules.
Hence, we can conclude that in a phospholipid, amino-alcohol modified phosphate, ester groups, and glycerol are the components which constitute the hydrophilic head.
The enthalpy of the reaction is 100 kJ and the reaction is endothermic in nature.
<u>Explanation:</u>
Enthalpy of any chemical reaction is the measure of the difference in the energy utilized for performing a reaction. As in the present case, it is stated that the initially, a chemical reaction has 356 kJ of energy and after ending the chemical reaction has 456 kJ of energy.
This means the energy is increased after the chemical reaction. So the heat energy is absorbed during the reaction. This kind of chemical reaction where the products are formed by absorbing energy from the surrounding is termed as endothermic reaction.
Enthalpy = Energy absorbed = 456-356 =100 kJ.
So, the enthalpy of the reaction is 100 kJ. And as the enthalpy is positive which means the energy is absorbed from the surroundings, so the reaction is endothermic in nature.
Answer:
May 17
Explanation:
When it refers to 0% light it describe a new moon, from a new moon to a full Moon are 14 days, then if you start a full moon on May 3 and you add 14 days it means that the next new Moon would be on May 17.
Sodium. Oxygen is electronegative and hece pulls bonding electron towards oxygen atom, creating a partial negative charge on the oxygen atom. As unlike charges attract, it is then attracted to the positively charged sodium ion.
Explanation:
It represent Alcohol group (—OH)
