Zoology is the branch in which all these aspects been studied.
- is made of phospholipids
- controls the transfers of materials in and out of the cell
- embedded with proteins
Answer:
B. Organ system
Explanation:
Cells are the smallest level of organization. They make tissues and tissues make organs like heart and lungs. Organs make organ systems which are the highest level of organization such as respiratory system which includes organs like lungs etc.
The amount of FAT that a food contains is measured in calories
