Kategorier: Alle - carbohydrates - lipids - proteins - nucleotides

av Shams Al Molhem 6 år siden

228

Macromolecules

Carbohydrates, lipids, proteins, and nucleic acids are essential biomolecules in biological systems. Carbohydrates provide quick energy, energy storage, and structural support, exemplified by sugars, starches, cellulose, and glycogen.

Macromolecules

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Carbohydrates

Monomer: Monosaccharides

Functions: Quick energy, Energy storage, Structure

Ex: Sugars, Starches, Cellulose (Cell Wall), Glycogen

Unique properties: Starch-energy storage in plants, Glycogen-energy storage in animals, in liver & muscles, Cellulose-structure in plants (cell walls), Chitin-structure in arthropods & fungi exoskeleton. Use dehydration synthesis to build carbohydrates.

Lipids

Monomer: Triglycerides
Elements: Carbon, Hydrogen, Oxygen

Functions: Energy storage, Cushions organs, Insulates body

Ex: Oils, Phospholipids, Steroids, Waxes

Unique properties: Non-polar, Hydrophobic - doesn’t like water.

Nucleic acids

Monomer: Nucleotides
Elements: 5 Carbon sugar, Nitrogenous base, Phosphate group

Functions: Store and transmit hereditary information

Ex: RNA AND DNA

Unique Properties: series of bases encodes information

Proteins

Monomer: Amino acids
Elements: Carbon, Nitrogen, Oxygen, Hydrogen

Functions: Hormones, Movement, Immune system, Enzymes

Ex: Skin, Hair, Fingernails, Enzymes

Unique Properties: Proteins fold & twist into 3-D shape. Proteins do their jobs, because of their shape. Unfolding a protein destroys its shape. wrong shape = can’t do its job. unfolding proteins = “denature”

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