Need with question 2. ,3., 4., 5., 6.and 7.

In sexual reproducing animals once fertilization of the egg takes place, the exists as a single cell until cell division begins. a) egg b) larva c) sperm d) zygote

Hey me with this one❤☺❤ how do you say that a cell also has a life span and death like an organism? give one example.

What are the formed elements (cell or parts of cell) in blood and what are their functions ?