biomoleculesjkreider.weebly.com/uploads/4/7/1/0/47104229/biomolecules.pdf · chemistry of carbon...
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Biomolecules
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Chemistry of Carbon
● Living organisms are made up of molecules that consist of carbon and other elements.
● Carbon atoms have four valence electrons, allowing them to form strong covalent bonds with many other elements, including hydrogen, oxygen, phosphorus, sulfur, and nitrogen.
● Carbon-carbon bonds can be single, double, or triple covalent bonds.
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Biomolecules
● The term “biomolecule” means a molecule present in living
organisms that is necessary for survival.
● It is also known as: macromolecule
(“macro” = large)
● Elements found in biomolecules: C, H, O, N, and/or P
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Biomolecules
● The building blocks of biomolecules are monomers.
● Monomer: (“mono” = one)○ A small molecule that chemically
bonds with a similar molecule to form a polymer.
● Polymer: (“poly” = many)○ A large molecule made from
monomers linked together by chemical bonds.
● Biomolecules form by polymerization, in which small molecules join together to form large molecules.
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Biomolecules
The four major groups of biomolecules found in living things are:
Carbohydrates = Bun
Cheese = Lipid
Meat = Protein
Lettuce = Nucleic Acid
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Carbohydrates
● Carbohydrates are also known as sugars.
● Elements: Carbon (C), Hydrogen (H), and Oxygen (O)
● Typically in a Ratio of: 1:2:1 Example (C6H
12O
6)
● Primary Function: Provide short-term or quick energy for cell activities
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Carbohydrates
● Typical Structure: Often a ring like a pentagon
● Monomer: Monosaccharide (“one sugar”)
● Polymer: Polysaccharide (“many sugars”) or Disaccharide (“two sugars”)
● Typically ends in -”ose”
● Examples:○ Bread○ Pasta○ Potatoes
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Lipids
● Lipids are also known as fats.
● Elements: Carbon (C), Hydrogen (H), and Oxygen (O)
● Primary Function: Provide long-term or stored energy for the organism
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Lipids
● Typical Structure: Long hydrocarbon chain
● Monomer: Fatty Acids + Glycerol
● Polymer: Triglyceride
● Examples:○ Oils○ Waxes○ Steroids○ Hormones
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Proteins
● Elements: Carbon (C), Hydrogen (H), Oxygen (O), and Nitrogen (N)
● Primary Function: Provides structural support; Enzymes; Immune system
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Proteins
● Typical Structure: Complex and varied○ Primary - Sequence of amino acids○ Secondary - Alpha helix, Beta pleated sheets○ Tertiary - Folding of secondary structures○ Quaternary - 3D structure of multiple amino acid chains
● Monomer: Amino acids
● Polymer: Polypeptide (amino acids linked together by peptide bonds)
● Examples:○ Meat○ Beans
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Nucleic Acids
● Elements: Carbon (C), Hydrogen (H), Oxygen (O), Nitrogen (N), and Phosphorus (P)
● Primary Function: Contains and carries the genetic information of an organism
● Monomer: Nucleotide
● Polymer: Polynucleotide (Nucleic acid)
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Nucleic Acids
● Nucleotide Structure: Consists of 3 parts: a 5-carbon sugar, a phosphate group (-PO
4), and a nitrogenous base
● Examples:○ DNA○ RNA○ ATP (energy of cell)