The right option is; glucose
Glucose is the biological molecule that is smallest due to being a subunit rather than a macromolecule.
Glucose is a simple sugar (monosaccharide), a sub unit of carbohydrates. Glucose is the most significant energy source in all organisms. It is the most abundant carbohydrate and it is mainly present in foods rich in carbohydrates, such as rice, potatoes, and fruit. Glucose is also produced by plants and most algae during photosynthesis.
<span>They are not identical because they use different parts of their genetic instructions. </span>
Answer:
air is drawn into the lungs
lungs expand
the muscles between the ribs contract to move the ribs up and down
air pressure in the chest cavity decreases
the diaphragm contracts and flattens
