Question

which statement is true of carbohydrates
A Carbohydrates form biological catalysts known as enzymes.
B Carbohydrates carry the genetic information in plants.
C Carbohydrates are major components of cell membranes.
D Carbohydrates are a source of energy.

Answer 1

Answer:

The correct answer is D carbohydrates are a source of energy .

Explanation:

Carbohydrates can be defined as Polyhydroxy Aldehydes or Polyhydroxy ketones.Carbohydrates are major source of energy in our body.

                   Carbohydrate such as glucose is broken down to through glycolysis, TCA cycle and oxidative phosphorylation collectively called aerobic respiration to generate carbon di oxide,H2O and adenosine Tri Phosphate or ATP.

            1 molecule of ATP is broken down to generate -30.5 kj/mole energy which is used as free energy by the cell to carry out various cellular and physiological process such as gluconeogenesis,Muscle contraction etc.