Answer:
Reproduction.
Explanation:
At the cellular level indicate that the living organisms are made up of the smallest building blocks called cell. It refer to unicellular organisms i.e organism with one cell.
At the cellular level, membranes; for the whole organism, the skin is Reproduction because a single parent cell divides into two cells (offsprings), two divides into four cells and so on. It is called cell division and cell reproduction because a single cell skin divides to produce many cells.
That cell is called ribosome.
After looking at the above diagram given, Enzymes are the molecules that were used to cut, copy, and to connect the DNA segments. The correct answer is 2. Make sure to check the number choices, they are out of order on this particular question.