My Answer: Vestigial organs
Why?: " Vestigial organs are physical structures that were fully developed
and functional in an ancestral group of organisms but are reduced
and unused in the later species."
Hope I helped! :D
I believe you're looking for "chemical digestion".
Chemical digestions is where food that we ate is digested into simpler and soluble molecules that can be absorbed by our body. Enzymes are used as a catalyst to speed up the reaction.
One example is the digestion of lipids. Enzyme named lipase is used to speed up the digestion of lipids into 3 fatty acid molecules and 1 glycerol. This way, our body can absorb these simple molecules, and use them in order to make our body function.
On the other hand, physical digestion does not include enzymes, such as chewing in our mouth, therefore, don't mix them up!
Air would go through the trachea, then the bronchi, the bronchioles, and then the alveoli.
Photosynthesis? Its when a plant takes in sunlight for ATP (energy).
Answer:
Energy storage, cell structure, signalling.
Explanation:
The functions that lipids serves in the body is - storage of energy, cell structure and signalling. Lipid is an efficient source and storage of energy. It helps in absorption and transportation of fat soluble vitamins ( A, D, E ,K). lipids work as a building block of cellular membrane. Lipids also act as a chemical messanger
