Title of Books : Cell Biology
Author : Mark Dalton , Emperorbma, Theresa Knott , Allen Llew, Magnus Manske, Marshman, JW
Schmidt, Karl Wick.
Publisher : -
Year Published : 2006
Code Book/ISBN : -
What is a cell?
Cells are the fundamental building blocks of life. Cells vary to form individual "single-cell" organisms (bacteria) to "multi-cellular" structures (tissue, organs) and organisms (animals and plants). Cells are structural units that make up plants and animals; also, there are many single celled organisms. What all living cells have in common is that they are small 'sacks' composed mostly of water. The 'sacks' are made from a phospholipid bilayer membrane. This membrane is semipermeable (allowing some things to pass in or out of the cell while blocking others). There exist other methods of transport across this membrane that we will get into later. So what is in a cell? Cells are 90% fluid (called cytoplasm) which consists of free amino acids, proteins, carbohydrates, fats, and numerous other molecules. The cell environment (i.e., the contents of the cytoplasm and the nucleus, as well as the way the DNA is packed) affect gene expression/regulation, and thus are VERY important aspects of inheritance. Below are approximations of other components (each component will be discussed in more detail later)
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