Macromolecules aka Giant Molecules Macromolecules Are made from
- Slides: 20
Macromolecules aka Giant Molecules
Macromolecules: Are made from thousands →hundreds of thousands of smaller molecules Are formed by polymerization Making of large molecules from the joining of smaller ones Smaller units = monomers (mono – one) Larger units = polymers (poly – many)
4 Groups of Macromolecules 1) Carbohydrates 2) Lipids 3) Proteins 4) Nucleic Acids
Carbohydrates: Made of carbon (C), hydrogen (H), and oxygen (O) atoms in a ratio of 1: 2: 1 Functions: Living things use carbohydrates as their main source of energy Plants and some animals use carbohydrates for structure
Monosaccharides (mono = one): Smaller / simple carbohydrate Our body's primary source of energy takes the form of glucose C 6 H 12 O 6 Other monosaccharide include fructose and galactose
Polysaccharides (poly = many): Are complex carbohydrates Chains of monosaccharides Ideal storage molecules for energy : they are large & fold compactly they are easily converted into the required sugars when needed Plants use to store excess sugar, and make cellulose needed for structure
Lipids: Lipids are the only macromolecule that is not a polymer Mostly made of carbon and hydrogen atoms Are formed when a glycerol molecule combines with a fatty acids
Saturated or Unsaturated: Saturated – carbon and hydrogen single bonds Solid at room temp Unsaturated –have double bonds Liquid at room temp
Lipid Structure: Glycerol Fatty acid
Important Function of Lipids: Make up biological membranes and waterproof coverings Phospholipids are the main component in cell membranes
Examples of Lipids: Fats Oils Waxes Steroids
Proteins: Contain carbon, hydrogen, oxygen, & nitrogen Are polymers of amino acids = building blocks of proteins 20 Amino acids Each amino acid is different and therefore has its own unique properties
Protein Structure: Amino acids are compounds with: amino group on one end carboxyl group on the other end ‘R’ = where amino acid attaches Amino Group Carboxyl Group
Functions of Proteins: Are enzymes Used for storage Transport molecules Are a major component of muscles Mediate cell responses Give structural support
Nucleic Acids: Store and transmit hereditary, or genetic, information Contain hydrogen, oxygen, nitrogen, carbon & phosphorus Polymers assembled from individual monomers called nucleotides 2 kinds 1) DNA 2) RNA
DNA / RNA Information: Long chains of nucleotides DNA Double stranded Contains the genetic information of an organism organized into chromosomes RNA Single stranded Involved in protein synthesis
Nucleic Acid Structure: Three main parts: 1) Sugar 2) Phosphate alternating sugar & phosphate molecules = backbone 3) Nitrogenous bases are oriented in the center
RNA / DNA Structure:
Carbon Compounds include Carbohydrates Carbohydrat that consist of Sugars and starches which contain Carbon, hydrogen, oxygen Lipids Nucleic acids Proteins that consist of Fats and oils Nucleotides Amino Acids which contain Carbon, hydrogen, oxygen, nitrogen, phosphorus which contain Carbon, hydrogen, oxygen, nitrogen,
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