Which of the following was rudolf virchow's contribution to our understanding of cells?

cells are the basic units of life.
all living things are made of cells.
cells can be categorized as either prokaryotes or eukaryotes.
all cells are produced from existing cells.

Amistake occurs during mitosis of a muscle stem cell.how might this affect muscle tissue

Vegetation that grows along the floors of tropical and temperate forests is called undergrowth. how is the undergrowth of a tropical rain forest most likely to differ from the undergrowth of a temperate forest? a. a tropical rain forest's undergrowth most likely experiences periods of dormancy during colder weather. b. a tropical rain forest's undergrowth most likely experiences periods of dormancy during rainy weather. c. the undergrowth of a tropical rain forest most likely requires less sunlight. d. the undergrowth of a tropical rain forest most likely requires more sunlight.

What is the answer for the complicated molecules that make up living things usually contain carbon. why is carbon so important in these molecules?