The cytoplasm functions to support and suspend organelles and cellular molecules. Many cellular processes also occur in the cytoplasm.
Some of these processes include protein synthesis, the first stage of cellular respiration known as glycolysis, mitosis, and meiosis. In addition, the cytoplasm helps to move materials, such as hormones, around the cell and also dissolves cellular waste.
Normally a 10× drop for each trophic level, so I'd say 2,000 kilocal.
Basically, there is a root. This root makes cells. Those cells die and multiply making your nail longer.
This biomolecule would be used to store energy