2. What types of molecules are used for energy?
3. What is most commonly used?
(U. S.)

Explanation:

Biological molecules The food we eat – our diet – is made up of different biological molecules which give us energy and contain chemicals we need to grow and repair ourselves and help our cells function in our body.

the offspring would all be white. if the parents are both white flowers then they have the genotype rr, which when crossed results in an all white punnet square.