4. Which of the following statements about physical digestion and chemical digestion is correct?
A. Bile involves both physical and chemical digestion.
B. In the mouth cavity, carbohydrates undergo physical digestion only.
C. In both types of digestion, food substances are broken down into simpler molecules.
D. Physical digestion can enhance the efficiency of chemical digestion.

D

Explanation:

Example the action of teeth on food in the mouth increase surface area for salivary amylase to start digestion of starch

metamorphism is the change of minerals or geologic texture (distinct arrangement of minerals) in pre-existing rocks (protoliths), without the protolith melting into liquid magma (a solid-state change). the change occurs primarily due to heat, pressure, and the introduction of chemically active fluids. i hoped i !

the cells uses some of the atoms of the glucose molecules to atp molecules. the atoms of the glucose molecules will then be converted into energy which will be eventually stored in atp. the energy produced which are stored in atp are coming from the glucose’s chemical bonds.