B) cholesterol
C) protein
D) carbohydrate chain
the correct answer is option A
Phospholipids structure consists of two parts –
a) Hydrophillic Head
b) Hydrophobic tail
The phospholipids are arranged in two parallel layers thereby forming by the phospholipid bilayer. It is the part of cell membrane and arranges them in a way that their hydrophilic heads face towards the outwards direction and the hydrophobic tails face each other. The hydrophobic tails opposes the transfer of fluid movement specially the water and the fatty acid head containing negative phosphate group opposes the movement of charged ions. They allow transfer of material under specific circumstances.
Answer: By increasing the rate of reaction by lowering the activation energy.
Explanation:
A catalyst can be defined as the substances that can increase the rate of reaction by lowering the activation energy. This saves more energy for the reaction to take place.
The rate of reaction can be increased by several factors such as temperature, pH and catalyst.
Some of the catalyst are: Enzyme, molybdenum.