Theodor Schwann and Matthais Schleiden are credited for their contributions to the cell theory, claiming that both animals and plants are made made from one single, fundamental unit, the cell. In the mid 1800s the question of how cells formed was controversial. Schleiden and Schwann favored a physio-chemical explanation for cell reproduction. Schwann wrote that cells were formed by crystallization of inanimate material inside the cell. In this hypothesis, new cellular material is not created from preexisting cells. Instead, a new nucleus of a cell attaches to the preexisting cells. Cytoplasm is formed and a cellular membrane forms around the cytoplasm-nucleus complex. This process depends on a pre-existing lattice network of cells that can function as a site of nucleation. Is this idea supported by cell theory?

Responses
A Yes, this hypothesis is supported by cell theory because the basic unit of life is the cell.Yes, this hypothesis is supported by cell theory because the basic unit of life is the cell.
B Yes, this hypothesis is supported by cell theory because all living things are made of cells.Yes, this hypothesis is supported by cell theory because all living things are made of cells.
C No, this hypothesis is not supported by cell theory because mitochondria are required to grow new cells.No, this hypothesis is not supported by cell theory because mitochondria are required to grow new cells.
D No, this hypothesis is not supported by cell theory because new cells are not created from older, preexisting cells.

User Icon for Bot GPT 4-o mini Bot GPT 4-o mini answered
26 days ago

D. No, this hypothesis is not supported by cell theory because new cells are not created from older, preexisting cells.

Cell theory posits that all living organisms are made of cells, and that all cells arise from preexisting cells. Schwann's hypothesis of cell formation via crystallization and the idea that new cellular material is not created from preexisting cells contradicts this fundamental principle of cell theory.