Biomolecules - Vocab Flashcards
Pentose
A 5- carbon sugar
Monosaccharide
If the number of carbon atoms in a molecule is low (from 3 to 7)
Hexose
A 6-carbon sugar
Glucose
A main example of a simple carbohydrate or a hexose
Dehydration reaction
Water is removed during a reaction
Degradation
Addition of water in a reaction
Disaccharide
Contains 2 monosaccharides that have joined during a dehydration reaction
Polysaccharides
Polymer made from sugar monomers
Polymer
Macromolecule consisting of covalently bonded monomers
Monomer
A simple organic molecule that exists individually or link to other monomers to form polymers
Starch
Ready storage of glucose, polymers in starch are up to 4000 glucose units, less chains that branch off, becomes glycogen stored in liver
Glycogen
Ready storage if glucose in liver
Cellulose
A polysaccharide, in cell walls, alternating up/down oxygen molecules in linkage therefore we can’t digest it (fiber)
Hydrophobic
Does not dissolve in water because it’s nonpolar
Hydrophilic
Type of molecule that interacts with water by dissolving in water and or by forming hydrogen bonds with water molecules
Fats
Usually of animal origin and solid at room temperature. Long term energy storage, insulates against heat loss, protective cushion around major organs
Oils
Plant origin, liquid at room temp.
Triglyceride
A fat molecule is sometimes called this because of it’s 3 part structure
Neutral fat
This term is sometimes used because the molecule is nonpolar
Emulsification
Breaking up of fat globules into smaller droplets by the action of bile salts or any other emulsifier
Give an example if emulsification
Dirty clothes are washed with detergent, prior to digestion fats are emulsified by bile in intestines
Fatty acid
A hydrocarbon chain that ends with the acidic group COOH
Saturated fatty acids
No double covalent bonds between carbon atoms
Unsaturated fatty acids
Double bonds between carbon atoms whenever the number of hydrogens is less than 2 per carbon atom
Steroids
Lipid molecule that has a complex of 4 carbon rings
Carbohydrates are made from
Simple sugars
Carbohydrates contain
C H O
Biological subgroups of carbohydrate
Monosaccharides, disaccharides, starches, cellulose
Carbohydrates function as
Sources of energy and inert structural support
Lipids are made from
Fatty acids (mainly)
Lipids contain
C, H
Biological subgroups of lipids
Fats and oils, phospholipids, steroids
Lipids function as
Long term energy storage and membrane components
Proteins are made from
Amino acids
Proteins contain
C,H, N, O, S
Biological subgroups of proteins
Functional proteins, structural proteins
Protein molecules function as
Control molecules, flexible structures
Nucleic acids are made from
Nucleotides
Nucleic acids contain
C, H, O, N, P
Biological subgroups of nucleic acids?
DNA RNA
Nucleic acids function as
Information carriers and control molecules