Categorie: Tutti - glucose - structure - energy

da Amir Ramzy mancano 3 anni

137

Biological Molecules (Carbohydrates)

Lactose is a disaccharide composed of glucose and galactose, featuring two carbon rings linked by a β-1,4-glycosidic bond formed through a condensation reaction. This sugar not only serves as a readily available energy source but also aids in the absorption of calcium and phosphorus.

Biological Molecules   (Carbohydrates)

Biological Molecules (Carbohydrates)

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Disaccharide (Lactose)

Lactose is composed of glucose and galactose, two simpler sugars used as energy more readily available, it aids in the absorption of calcium and phosphorus in our bodies
- White solid - Polar - Soluble in water and ethanol

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Galactose and glucose units joined by a β-1,4-glycosidic linkage, by a condensation reaction

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Glucose and galactose make up this disaccharide

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Two carbon rings bonded, consisting of of C, O, H, function grp. hydroxyl carbonyl groups, two sugars bonded together

Monosaccharide (Glucose & Galactose)

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Immediate source of energy, important for structure of organisms and cellular respiration, create energy for cells
- Colourless - Polar - Solid and liquid - Soluble in water and acids, not in nonpolar solvents - Sweet in taste

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When bonded more than one monosaccharide, glycosidic bonds are formed using condensation reaction, water is removed for bonding capability

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Monomers include glucose, fructose and galactose

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Molecules of C, O, H, function grp. consists of hydroxyl carbonyl groups, ring structure and α-carbohydrates the OH grp. is opposite direction of monomer (CH2OH), β-carbohydrates are same direction of monomer, helical or straight chained shape

Oligosaccharide (Maltotriose)

Found on the plasma membrane of animal cells for cell-cell recognition and cell binding, different oligosaccharide determine blood type of red blood cells,
- Polar - Solid and liquid - Soluble in water and acids, not in nonpolar solvents - Sweet
Glycosidic bonds formed by condensation reaction

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Three glucose molecules bonded together

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Made up of to 20 monosaccharides joined together, function grp. hydroxyl carbonyl groups, chain of many monosaccharides

Polysaccharide (Starch & Cellulose)

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Functions

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Stored energy, not immediate since many bonds need to be broken, important for cellular structure (cell wall)
Properties

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- White solid - Polar - Solid and liquid - Insoluble in water - Not sweet in taste - hydrophobic
Linkage

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Many alpha and beta glycosidic linkage formed by condensation reaction
Monomer

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Composed of glucose monomers joined in α 1,4 linkages
Structure

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ambitiousgood communicatorfocuseddeterminedadaptablecuriousoptimisthard workerhonestpoliteco-operativeself motivatedenthusiasticgood leaderstrategic thinkerquick learnerflexiblegood problem solver
Helical shape (α) and straight chain shape (β), function grp. hydroxyl carbonyl groups, many monosaccharides bonded together