8 Questions
What is protoplasm?
A complex organic substance found in cells
Who recognized that all cells are very similar in structure?
Schleiden and Schwann
What do the substances enclosed by membranes or cell walls always contain?
Nuclei or an equivalent nuclear substance
What has made it possible to reveal the complex intricacies of intracellular organization?
Development of electron-microscope techniques
What is the significance of cell theory?
Cells are the basic structural and functional units of all organisms.
Explain the composition of protoplasm.
Protoplasm is a colloidal organic complex consisting largely of protein, lipids, and nucleic acids.
How have developments in electron-microscope techniques impacted the study of cells?
They have made it possible to reveal the complex intricacies of intracellular organization.
What do the substances enclosed by membranes or cell walls always contain?
The protoplasm always contains nuclei or an equivalent nuclear substance.
Test your knowledge about cell theory, which refers to cells as the basic structural and functional units of all organisms, and protoplasm, the living material of a cell. Learn about the founders of cell theory, Schleiden and Schwann, and their recognition of the similarities in cell structure across organisms.
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