As a single cell.
Yes, all organisms begin as a single-celled zygote. Then they undergo meiosis and mitosis to replicate if they are multicellular or stay the same if they are single celled organisms.
All life begins as a single cell.
Glycolysis
Plankton and phytoplankton.
multicellular organisms begin as a single cell.
Life
All living organisms use energy to carry out daily functions
We all current life has a single common ancestor.
Cells make up all the organisms of life. Hopefully...
Cell
Yes. All organisms that are produced by sexual reproduction start out as a single cell called a zygote. The zygote is the cell that results from the fertilization of the egg by the sperm.
The layer containing all forms is biosphere. It is the life of all organisms.