CELL DISCOVERY & Virus V Cells
Unlike cells, viruses cannot make their own energy. They must use this to reproduce.
A host cell?
Cells are considered living because they perform all 8 life functions. Viruses are not considered fully alive because they cannot do this on their own.
reproduce (or carry out metabolism)
Using his handmade microscope, Anton van Leeuwenhoek was the first to observe single-celled organisms, now known as this type of cell without a nucleus.
Prokaryotic Cell or Prokaryote