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What is a cell in biology?
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Apr 19, 2024 · cell, in biology, the basic membrane-bound unit that contains the fundamental molecules of life and of which all living things are composed. A single cell is often a complete organism in itself, such as a bacterium or yeast. Other cells acquire specialized functions as they mature.
Cell biology is the study of cell structure and function, and revolves around the concept that the cell is the fundamental unit of life. Focusing on the cell allows a detailed...
Cell biology is the study of the structural and functional units of cells. Cell biology encompasses both prokaryotic and eukaryotic cells and has many subtopics which may include the study of cell metabolism, cell communication, cell cycle, biochemistry, and cell composition.
Cell theory, developed in 1839 by Matthias Jakob Schleiden and Theodor Schwann, states that all organisms are composed of one or more cells, that cells are the fundamental unit of structure and function in all living organisms, and that all cells come from pre-existing cells.
Learn about the history and basics of cell theory, the idea that all living things are composed of one or more cells. Explore the diversity and functions of different types of cells and how they are observed and studied.
- What is the main function of a typical cell in the human body?Cellular biology is a pretty in depth field, but cells basically break down sugars into usable energy, they regulate growth through cellular divisi...
- in the second paragraph, when you cut a cell in half, what do you see, and are any cells the same?When cut a cell in half you will see a cell membrane, cell wall (in some cells), cytoplasm- the jelly-like substance in the cell, mitochondria- the...
- Is it actually possible to cut a cell in half (as mentioned in the second introductory paragraph)? I...they use staining agents do dye the cell. Staining agents include Methyl Blue and Safrannin
- how many cells is an egg made of?When you say that, do you mean it in an "embryonic egg, inside of the womb" context or an egg that has been laid?
- Does number of the cells in our body always remain the same ?Not really: cells continuously die and split so that they keep getting destroyed but the body replaces them too. Also, children have fewer cells th...
- Are cells in the human body more reliant on other cells than unicellular organisms?We are looking at it on a different scale. An unicellular organism does not even have 'other cells to be reliant on' since it is unicellular. In a...
- how would that first cell survive?Most likely because of the lack of competition. If you were the only organism alive, with lots of resources around you, why wouldn't you be able to...
- are cells made out of cellsLol that's not possible! Cells are instead made out of various biomolecules and cell organelles, which are made out of various other molecules bond...
Cells are the smallest common denominator of life. Some cells are organisms unto themselves; others are part of multicellular organisms.
Cells are the most basic unit of life. All cells have a membrane that separates them from the outside world. Although cells are small, they are not simple. Cells contain different components, such as the cytoplasm, ribosomes, and genetic information in the form of DNA. Created by Sal Khan.
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- Sal Khan
