When do humans store fat molecules in their bodies​

Excess fat is stored in the body's cells until it is needed for energy. When the body requires more energy, it will burn stored fat in a chemical process known as metabolism.

the diploid number of chromosomes is sometimes represented by the symbol 2n. for the fruit fly, the diploid number is 8, which can be written as 2n = 8, where n represents twice the number of chromosomes in a sperm or egg cell.