Which experiments led to changes to the original cell theory?
experiments that showed that blood cells transport gases, waste, and nutrients throughout the body
experiments that showed that all cells are similar in how they metabolize and in their composition
experiments that transplanted synthetic chromosomes into bacterial cells to create a new species
experiments that established the existence of single-celled organisms and microbes
The experiments that led to changes to the original cell theory include:
1. Experiments that showed that blood cells transport gases, waste, and nutrients throughout the body: These experiments provided evidence that cells can have specialized functions and are not all identical as proposed in the original cell theory.
2. Experiments that showed that all cells are similar in how they metabolize and in their composition: These experiments revealed that cells share certain metabolic processes and have common structures, suggesting a fundamental similarity among different types of cells.
3. Experiments that transplanted synthetic chromosomes into bacterial cells to create a new species: These experiments demonstrated that genetic material can be manipulated and transferred between cells, challenging the notion that cells arise solely from pre-existing cells as stated in the original cell theory.
4. Experiments that established the existence of single-celled organisms and microbes: These experiments provided evidence for the existence of cells that are not part of multicellular organisms, thus expanding the understanding of the diversity and complexity of cell types beyond what was initially proposed in the original cell theory.
The experiments that led to changes in the original cell theory include:
1. Experiments that showed that blood cells transport gases, waste, and nutrients throughout the body: These experiments demonstrated that specialized cells, such as red blood cells, have specific functions within the body and are not just structural components. They provided evidence that cells have specific roles in the transport of substances, which expanded the understanding of cell functions beyond the original theory.
2. Experiments that showed that all cells are similar in how they metabolize and in their composition: These experiments compared the metabolic processes and chemical composition of different types of cells. The findings indicated that cells share common characteristics in terms of their metabolism and composition, supporting the notion that all cells have fundamental similarities.
3. Experiments that transplanted synthetic chromosomes into bacterial cells to create a new species: These experiments involved manipulating the genetic material of bacterial cells by introducing synthetic chromosomes. This led to the creation of new species of bacteria with modified traits and capabilities. These experiments highlighted the role of genetic material in determining cell identity and challenged the original theory's focus solely on cell structure.
4. Experiments that established the existence of single-celled organisms and microbes: Scientists conducted experiments to observe and study single-celled organisms and microbes, such as bacteria and protozoa. These experiments confirmed the existence of organisms composed of a single cell, expanding the understanding of cell diversity and challenging the initial belief that cells always exist as part of multicellular organisms.