Word: Cell Doctrine
Definition: The "cell doctrine" is a scientific theory in biology that states that all living things are made up of cells. Cells are the basic building blocks of life, and they perform essential functions that keep organisms alive. This theory was proposed in 1838 by two scientists named Matthias Schleiden and Theodor Schwann.
Usage Instructions: - When talking about biology or living organisms, you can use "cell doctrine" to explain how all life is structured at a cellular level. - It is often discussed in the context of science classes, textbooks, or discussions about the nature of life.
Example: "The cell doctrine helps us understand that both plants and animals are composed of cells, which work together to keep the organism functioning."
Advanced Usage: In more advanced scientific discussions, you might encounter the cell doctrine when discussing topics like cellular processes, tissue formation, and the development of multicellular organisms.
Word Variants: - Cell (noun): The basic unit of life, e.g., "Human cells are very complex." - Cellular (adjective): Relating to cells, e.g., "Cellular respiration is how cells produce energy."
Different Meaning:While "cell" can refer to the biological unit, it can also mean a small room in a prison (e.g., "He was locked in a cell.") or a compartment in a structure (e.g., "The battery has several cells that store energy.").
Synonyms: - Cell theory (another term for the same concept) - Biological unit (referring to the role of cells in living organisms)
Idioms and Phrasal Verbs:There are no specific idioms or phrasal verbs directly related to "cell doctrine." However, in a biological context, you might hear phrases like "break down" (to decompose or analyze) when discussing how cells function or interact.
In summary, the cell doctrine is a fundamental concept in biology that explains the importance of cells in all living organisms.