![]() ![]() Energy Homeostasis that are anchored in the membrane are responsible for cell signaling and interactions, transmembrane transport of substances, and for providing cellular structure.Ĭell membrane (also known as plasma Plasma The residual portion of blood that is left after removal of blood cells by centrifugation without prior blood coagulation. The specific sequence of amino acids determines the shape the polypeptide will take, during protein folding, and the function of the protein. Proteins Proteins Linear polypeptides that are synthesized on ribosomes and may be further modified, crosslinked, cleaved, or assembled into complex proteins with several subunits. Fatty Acids and Lipids interact and expose their polar heads to the aqueous extracellular environment while sequestering their nonpolar tails toward the middle of the membrane. They are composed of one molecule of the long-chain amino alcohol sphingosine (4-sphinganine) or one of its derivatives, one molecule of a long-chain acid, a polar head alcohol and sometimes phosphoric acid in diester linkage at the polar head group. Fatty Acids and Lipids and sphingolipids Sphingolipids A class of membrane lipids that have a polar head and two nonpolar tails. They are named according to their polar head groups, such as phosphatidylcholine and phosphatidylethanolamine. Membranes are formed when glycerophospholipids Glycerophospholipids Derivatives of phosphatidic acid in which the hydrophobic regions are composed of two fatty acids and a polar alcohol is joined to the c-3 position of glycerol through a phosphodiester bond. Additionally, the cell membrane allows the cell to communicate with other cells and also helps in tissue formation. DNA Types and Structure and mediate the exchange of ions and molecules. DNA, which consists of a polysugar-phosphate backbone possessing projections of purines (adenine and guanine) and pyrimidines (thymine and cytosine), forms a double helix that is held together by hydrogen bonds between these purines and pyrimidines (adenine to thymine and guanine to cytosine). Eukaryotic and prokaryotic organisms normally contain DNA in a double-stranded state, yet several important biological processes transiently involve single-stranded regions. Energy Homeostasis that function to protect cellular DNA DNA A deoxyribonucleotide polymer that is the primary genetic material of all cells. A cell membrane is composed of a phospholipid bilayer and proteins Proteins Linear polypeptides that are synthesized on ribosomes and may be further modified, crosslinked, cleaved, or assembled into complex proteins with several subunits. ![]() Transfusion Products membrane or plasmalemma) is a biological membrane that separates the cell contents from the outside environment. Students: Educators’ Pro Tips for Tough TopicsĪ cell membrane (also known as the plasma Plasma The residual portion of blood that is left after removal of blood cells by centrifugation without prior blood coagulation.Maternity Nursing and Care of the Childbearing Family. ![]()
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