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Questo esame si sostiene in inglese: le lezioni e le domande sono in inglese. L'interfaccia resta in italiano.
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Parte 1 di 1
Water is a polar molecule whose electronegative oxygen and partially positive hydrogens form extensive hydrogen bonding networks. These impart high specific heat capacity, high boiling point, and strong cohesion, making water the ideal biological solvent.
Carbohydrates function as cellular fuels (glucose C6H12O6) and structural polymers (cellulose, chitin). Lipids are hydrophobic macromolecules; triglycerides store energy, while amphipathic phospholipids form the core bilayer of cellular membranes.
Water Dipole
Polar covalent O-H bonds with hydrogen bonding
High heat capacity and solvent capability
Monosaccharides
Simple sugars like glucose, fructose, galactose
Primary substrate for glycolysis
Polysaccharides
Starch/glycogen (energy), cellulose (plant walls)
Polymers of glucose linked by glycosidic bonds
Phospholipids
Glycerol + 2 fatty acids + phosphate group
Hydrophilic head and hydrophobic tails
Esempio svolto
1.Glucose is the primary monosaccharide metabolized during cellular respiration to yield ATP.
2.Phospholipids are completely hydrophobic and dissolve readily in non-polar organic solvents.
Accesso a vita a tutte le 5 lezioni di Biology, mappe concettuali interattive, quesiti risolti passo per passo e simulazioni d'esame a tempo per CEnT-S.