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Principles of Biology
Chapter 3 - Macromolecules
34
Biology
Undergraduate 1
02/08/2009

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Term
Peptide Bond
Definition
Bond formed between two amino acids. Formed from binding the carboxyl group of one amino acid to the amino acid group of another.
Term
Special Cases Amino
Definition
Cysteine - Has Sulphur and will create disulphide bridges
Glycine - Smallest Amino Acid. R group is a single hydrogen.
Proline - Ring Structure. Used to form kinks and loops.
Term
Primary structure
Definition
Single, long chain. This determines other structures.
Term
Secondary Structure
Definition
2 Flavors - Alpha Helix or Beta pleated sheets.
Term
Tertiary Structure
Definition
Bending and folding of secondary structure. Held together by interaction of R-Groups
Term
Quaternary Structure
Definition
Tertiary structures interacting with each other. Example: Hemaglobin.
Term
Denaturization
Definition
Heating up a protein so that the bonds of secondary, tertiary or quaternary structures. Does not ruin the primary structure.
Term
Chaperonins
Definition
Rehab for proteins. Fixes misfolded proteins. Catches it in a "cage."
Term
Monosaccharide
Definition
Glucose, fructose, and ribose.
Term
Disaccharide
Definition
Maltose, Lactose, Sucrose.
Term
Polysaccharide
Definition
Lots of energy (starches, glycogen, and cellulose). AKA CARBS!
Cellulose - one long chain. Very strong.
Glycogen and Starch - bind to water easily.
Starch is slightly branched and glycogen is very branched.
Term
Alpha and Beta Glucose
Definition
Alpha - Hydrogen is up
Beta - Hydrogen is down
Term
Glycosidic Linkage
Definition
Bonds between sugars. Always between carbon abd 1 and 4. Alpha and beta depends on the first carbon
Term
Difference between Ribose and Deoxyribose
Definition
Ribose has oxygen and hydrogen. Deoxy you have only a hydrogen.
Term
Oligosaccharide
Definition
3 - 20. Used as a recognition signal.
Term
Why does glycogen store more?
Definition
Stores more because the body doesn't have to pump out water. Very compact.
Term
Triglyceride
Definition
Has 3 fatty acid tails. Ester linkage between glycerol and triglyceride.
Term
Saturated Fats
Definition
No double bonds. Solid at room temperature, like lard. Saturated with hydrogen bonds.
Term
Unsaturated Fats
Definition
Some double bonds. usually liquids
Monounsaturated-One double bond. Very good for you. Viva Olive Oil!
Polyunsaturated - More than one double bond. Peanut oil, vegetable oil, etc.
Term
Isomer
Definition
Molecules with the same atoms, but differently arranged.
Structural: Differ in how the atoms are joined together
Optical: Carbon with 4 groups binded to it.
Term
BIochemistry Unity
Definition
Organisms can attain required macromolecules by eating other organisms.
Term
Formation of Polymes
Definition
Condensation reactions - joining them together. Produces a water.
Hydrolysis - Breaks them to monomers. Requires water.
Term
Polypeptide chain
Definition
Single unbranched chain of amino acids
Term
Special Amino Acids
Definition
Serine, Threonine, Asparagine, Glutamine, Tyrosine.
Term
Carbohydrate
Definition
molecule in which carbon is flaned by Hydrogen and hydroxyl group
Term
Hexose
Definition
6 carbon sugar
Term
Pentose
Definition
5 carbon sugar
Term
sugar phosphates
Definition
Important in energy reactions
Term
Lipids
Definition
Nonpolar hydrocarbons. they can be phospholipids, carotenoids, steroids, vitamins, and waxes.
Term
Glycerol
Definition
3 OH groups. An Alcohol
Term
Fatty Acids
Definition
Nonpolar hydrocarbon w/ a polar carboxy group.
Term
Nucleotides
Definition
RNA and DNA. Consists of a pentose sugar and a phosphate group and a nitrogen-containing base.
Term
DNA bases
Definition
Adenine, cytosine, guanine, and thymine.
Term
RNA bases
Definition
Adenine, cytosine, guanine, and uracil.
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