The smallest unit of life is the
a. cell
b. compound
c. molecule
d. atom

Which process must a cell undergo top identical cells at the end of cell division

Efficiency is the percent of work put into a machine by the user (input work) that becomes work done by the machine (output work)

Which best explains why viruses do not have special structures or enzymes that allow them to make their own food? viruses can use energy in living cells that they infect. viruses can replicate inside a host that they infect. viruses can cause contagious illnesses in host cells. viruses integrate their rna or dna into infected cells.