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Macromolecules
Proteins, Carbohydrates (Saccharides!), Fats, Steroids, YAY!
56
Biology
Undergraduate 1
12/04/2013

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Term
Hydroxyl Group
Definition
- OH

Alcohol
Term
Carbonyl Group
Definition
- c = 0

Ketone (middle)
Aldehyde (end)
Term
Carboxyl Group
Definition
- C = O
\
OH

Carboxylic Acid
Term
Amino Group
Definition
H
/
- N
\
H

Amine
Term
Sulfhydryl Group
Definition
-SH
Term
Phosphate Group
Definition
O
||
-O-P-O`
|
O

Organic Phosphate
Term
Methyl Group
Definition
H
|
- C - H
|
H

Methylated Compound
Term
Hyrdrocarbons
Definition
Organic Molecules consisting of only carbon and hydrogen
Term
Functional Groups
Definition
Important chemical groups that affect molecular function by being directly involved in chemical reactions
Term
How ATP gives energy
Definition
Stores the potential to react with water. This reaction releases energy.
Term
Polymer
Definition
Long molecule made up of connecting monomers
Term
Monomer
Definition
Repeating units that serve as the building blocks of polymers
Term
Dehydration Reaction
Definition
When a bond forms between two monomers, each contributing part of a water molecule which is given off
Term
Hydrolysis
Definition
Essentially reverse of dehydration reaction. Breakage of bonds between monomers by adding a water molecule
Term
Carbohydrates
Definition
Sugars and polymers of sugars
Term
Monosaccharides
Definition
Multiple of CH2O. e.g. Glucose (C6H12O6)
Term
Disaccharide
Definition
Two monosaccharides joined by a glycosidic linkage
Term
Glycosidic Linkage
Definition
A covalent bond formed between two monosaccharides by a dehydration reaction
Term
Polysaccharides
Definition
Polymers with a few hundred to a few thousand monosaccharide monomers joined by glycosidic linkages
Term
Starch
Definition
Plant cells. Polymer of glucose
Term
Glycogen
Definition
Animal Cells. Polymer of glucose
Term
Alpha-beta Glucose
Definition
Found in cellulose most extensively. Every other glucose monomer is flipped
Term
Cellulose
Definition
Major component of plant cell walls. Alpha-beta glucose makes hydrogen bonds occur forming a strong lattice.
Term
Chitin
Definition
Used in exoskeletens
Term
Lipids
Definition
Fats, Phospholipids, Steroids
Term
Fat
Definition
Constructed from glycerol and fatty acids
Term
Fatty Acid
Definition
Long carbon skeleton. 16-18 C. Carboxyl group at end giving the term ACID
Term
Triacylglycerol
Definition
Three fatty acids linked to one glycerol
Term
Saturated Fatty Acid vs. Unsaturated Fatty Acid
Definition
Unsaturated: Double bond at some point in the carbon skeleton. Skewing the zigzag so that it does not solidify as easily

Saturated: Carbons completely surrounded by Hydrogen. Solidifies at higher temperatures. Less healthy.
Term
Phospholipids
Definition
Major Constituent of cell membranes. Hydrophilic Choline/Phosphate/Glycerol head. Hydrophobic Fatty Acid Tail
Term
Steroids
Definition
Lipids characterized by a carbon skeleton of 4 fused rings
Term
Catalysts
Definition
Chemical agents that selectively speed up chemical reactions
Term
Enzymic Proteins
Definition
Catalysts
Term
Defensive Proteins
Definition
Protect against disease
Term
Storage Proteins
Definition
Store Amino Acids
Term
Transport Proteins
Definition
Transport substances across cell membranes
Term
Hormonal Proteins
Definition
Coordinate an organisms activities
Term
Receptor Protein
Definition
Responsible for the response of cell to chemical stimuli
Term
Contractile and Motor Proteins
Definition
Actin and Myosin. Movement.
Term
Structural Proteins
Definition
Give Support to structures
Term
Nonpolar amino acids
Definition
Hydrocarbon Side chains. Exception: Methionine (CH2-CH2-S-CH3)
Term
Polar amino acids
Definition
_H at end of side chain
Term
Acidic Amino Acids
Definition
- Charge
Term
Basic Amino Acids
Definition
+ Charge
Term
Peptide Bond
Definition
Covalent bond between two amino acids formed by a dehydration reaction
Term
Primary structure
Definition
Linear chain of amino acids
Term
Secondary Structure
Definition
Regions stabilized by hydrogen bonds between atoms of the polypeptide backbone
Term
Tertiary Structure
Definition
3-D Shape stabilized by interactions between side chains
Term
Quaternary Structure
Definition
Association of two or more polypeptides
Term
Sickle-cell Disease
Definition
Substitution of one amino acid for another at a particular position in hemoglobin causes the molecules to crystallize and the blood cell to take a sickle shape
Term
Denaturation
Definition
When the weak chemical bonds within a protein are destroyed, causing the protein to lose its native shape
Term
Polynucleotides
Definition
Polymer of nucleic acids
Term
Nucleotides
Definition
Monomer nucleic acid
Term
Pyrimidine
Definition
1 ring. C T U
Term
Purine
Definition
2 Rings. A G
Term
DNA VS RNA
Definition
DNA
- Double Helix
- Deoxyribose
- T
RNA
- Ribose
- U
- SIngle Strand
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