Explanation:
A. Function of carbohydrate- provide energy
Carbohydrate are the most abundant bio-molecules consisting of carbon (C), hydrogen (H) and oxygen (O) atoms in 2:1 ratio. They serve many functions in the organisms like providing structural support and as energy storing molecule which upon oxidation provide energy to the organisms.
hence, providing energy is the correct answer.
B
. Function of lipids-chemical messenger
Lipids are the hydrophobic bio-molecules which form substances such as a fat, oil or wax which are soluble in in non-polar solvent but insoluble in water. They perform many function in the cells such as component of cell membrane, act as chemical messenger between cells ,energy storage, thermal insulation, fat digestion.
hence, chemical messenger is the correct answer.
C. Function of proteins- act as receptor molecules
Large, complex molecules which plays various important roles in plants.
Their important roles are- helps in transportation,structural molecule,act as receptor molecules,act as gene regulatory molecules,catalyze biochemical reactions,signalling molecule.
hence, act as receptor molecules is the correct answer.
D. Example of carbohydrate- starch, cellulose, glycogen
Starch, cellulose, glycogen are the molecules which are composed of basic units of carbohydrate- Carbon, hydrogen and oxygen. They perform the functions of carbohydrate like form structural support (cellulose) and serve as energy molecules (Starch and glycogen).
hence,starch, cellulose, glycogen is the correct answer.
E. Example of nucleic acids- DNA and RNA
DNA and RNA are the nucleic acid molecules in the organisms which carries the genetic information which undergo the process of translation to make proteins from the coded sequence of mRNA.
hence, DNA and RNA is the correct answer.
