Carbohydrates are essential to provide energy for the body because: a. they provide ketone bodies, which are the preferred energy of the body's cells. b. fats are not able to provide any energy to the cells. c. the glucose that is produced from them is vital to fuel most of the body's cells. d. proteins are available only to provide building block materials for tissues. e. ketone bodies produced from proteins do not provide adequate energy for cells.

Option (c).

Explanation:

Biomolecules are the important organic molecules that re present in the body of living organism. Four biomolecules of living organism are carbohydrates, proteins, lipids and nucleic acids.

Carbohydrates are the made of the polymers of glucose. Glucose is the important energy source of the body as the hum,an cells are permeable to the glucose molecule and generates ATP. Carbohydrate acts as an important vital fuel as it contains glucose units.

Thus, the correct answer is option (c).

answer:

the water molecules are transferred from the roots to the stem or top parts of the tall tree because of important properties of water which are adhesion, cohesion and capillary action. cohesion is the property of water molecules keeps water molecules in a combined state by sharing of bonds between them at the atomic level. adhesion allows the interaction of water molecules with other substances or substrate. adhesion will cause the attachment of water molecules to the wall of the vessel (xylem) of the plant. capillary action occurs when the adhesive force to the vessel wall is stronger than the cohesive force between water molecules. capillary action mimics the transfer of water from a tube or pipe. in this way water utilizes its property to transfer water from down to top level of the plant.