cell parts

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The cell is the basic structure, function and biologic unit of all organisms. Cells are the smallest unit of life that can replicate independently, Due to cell theory cells are referred to as the “building blocks of life". Cells consist of cytoplasm enclosed within the membrane, which contains many molecules like proteins and nucleic acids in the cell. Organisms can be classified as unicellular or multicellular. While the number of cells in plants and animals varies from species to species, humans contain almost or about 100 trillion cells. Most plant and animal cells are visible under a microscope, with dimensions between 1 and 100 micrometers. The cell was discovered by Robert Hooke in 1665. The cell theory, first developed in 1839 by Theodor Schwann, which states that all organisms are composed of one or more cells, that all cells come from preexisting cells (cell division), that vital functions of an organism occur within cells (building blocks of life). Every cell contains hereditary information necessary for all cell functions and for transmitting information to the next span of cells. Cells are said to have emerged on Earth 3.5 billion years ago. It was coined by Robert Hooke in which he compared the cork cells he saw through a microscope to small rooms monks lived in. There are two different types of cells, eukaryotes, which contain a nucleus, and prokaryotes, which do not. Prokaryotic cells are usually single-celled, while eukaryotic cells can be either or. Prokaryotic cells are simpler and smaller than eukaryotic cells, and don’t have membrane-bound organelles such as the nucleus. The DNA of a prokaryotic cell consists of a single chromosome that is in constant contact with cytoplasm. Enclosing the cell is the cell envel... ... middle of paper ... ...wn of the pyruvate produced in glycolysis. It occurs inside the mitochondria and generates much more energy than glycolysis, mostly through oxidative phosphorylation as said in Mr. Smith’s lecture. Cell division involves a single cell dividing into two cells. DNA replication is the process of duplicating a cell's genes this always happens when a cell divides through mitosis. Protein synthesis Cells are capable of synthesizing new proteins, which are essential for the modulation and maintenance of cellular activities. This process involves the formation of new protein molecules from amino acid building blocks based on information encoded in DNA/RNA. Protein synthesis generally consists of two major steps: transcription and translation. This basically sums up the cells parts what they are made of and how the function to get the cell to function to get a job done.
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