Which argument supports the idea that viruses are alive?
a. viruses have a cell membrane.
b. viruses contain unique genetic information..
c. viruses replicate in a host.
d. viruses do not produce proteins.

The observations of hooke and van leeuwenhoek documenting the existence of microscopic cells formed the basis of what important theory? a. the cell theory stating that all living things are composed of cellsb. the theory of spontaneous generation, which held that life forms could arise spontaneouslyc. the theory of chemotherapy, or use of antimicrobials to destroy pathogenic organismsd. the germ theory of disease and causative agents

Which element forms the basis of all organic organisms a carbon b oxygen c hydrogen d nitrogen

With the word calcite wich completes the analogy mineral, erosion, marble, or aragonite