Lecture 2 Flashcards
All contain CHO
Organic Compounds
Types of Organic Compounds
Carbohydrates Lipids Proteins Nucleic Acids ATP
Chainlike molecules made of repeating units called monomers
Polymer
Organic molecules are made by
Dehydration Synthesis
Removal of OH from one monomer and removal of H from the other
Dehydration Synthesis
Polymers are broken down by
Hydrolysis
Monomers are released by the addition of a water molecule, adding OH to one monomer and H to the other
Hydrolysis
Contains CHO in 1:2:1 ratio
Carbohydrates
Function of carbohydrates
Main fuel for cells
Types of Carbohydrates
Monosaccharides
Disaccharides
Polysaccharides
Simple sugars
Monosaccharides
Examples of simple sugars
Glucose
Galactose
Fructose
Deoxyribose
Double sugars
Disaccharides
Examples of double sugars
Sucrose
Lactose
Maltose
Polymer (many sugars linked)
Polysaccharides
Storage carb in plants
Starch
Storage carb in animal tissues
Glycogen
Contains CHO (much more CH than O)
Lipids
Functions of Lipids
Store energy
Cell membranes
Hormones
Types of lipids:
Triglycerides
Phospholipids
Steroids
Eicosanoids
Fatty acid + glycerol
Triglycerides
Examples of triglycerides
Oils
Fats
Types of fats:
Saturated
Unsaturated
Trans
Omega-3
Lipid bilayer in cell membranes
Phospholipids
Examples of steroids
Cholesterol
Hormones
Prostaglandins
Eicosanoids
Examples of prostaglandins:
Blood clotting
Blood pressure
Inflammation
Labor
Three fatty acid chains are bound to glycerol bu dehydration synthesis
Triglyceride Formation
Two fatty acid chains and a phosphorus-containing group are attched to the glycerol backbone
Phospholipid Molecule
Form interlocking hydrocarbon rings
Steroid Structure
Good Fats
Polyunsaturates
Monounsaturates
Bad Fats
Saturated
Trans
Contains CHON (+ some SP)
Proteins
Monomer protein
Amino acid
Monomer protein
Amino acid
Functions of Proteins:
Enzymes Hormones Transport Immunity Movement Support
Enzymes
Lactase
Hormones
Insulin
Transport
Hemoglobin
Immunity
Antibodies
Movement
Muscles
Support
Collagen
Structural Levels of Proteins
Primary
Secondary
Tertiary
Quaternary
Amino acid sequence
Forms polypeptide
20 different amino acids
Primary
Amino acids are linked by
Peptide Bonds
Hydrogen bonds make spirals and sheets
Secondary
Spirals
Alpha-helix
Sheets
Beta-pleated sheet
More folding to produce globular (compact, ball-like) molecule
Tertiary
2+polypeptides
Quaternary
Two types of proteins
Fibrous
Globular
Structural
Fibrous Proteins
Examples of fibrous proteins
Collagen
Keratin
Functional
Globular Proteins
Examples of Globular Proteins
Antibodies
Enzymes
Proteins unfolds and loses 3D shape
Protein Denaturation
Causes of protein denaturation
Decrease in pH
Increase in Temperature
Change in structure results to
Change in function
Contains CHONP
Nucleic Acids
Monomer nucleic acid
Nucleotide
Components of a nucleotide
Sugar
Phosphate
Nitrogen Base
Function of nucleic acids
Store hereditary information
Types of nucleic acids
DNA
RNA
Instructions for building proteins Double stranded (double helix)
DNA
Sugar DNA
Deoxyribose
Bases of DNA
A G C T
Complimentary
A - T
G - C
Carry info from DNA to ribosomes
Single-stranded
RNA
Sugar RNA
Ribose
Bases of RNA
A G C U
Types of RNA
mRNA
tRNA
rRNA
Adenine base + ribose + 3 phosphates
Adenosine Triphosphate (ATP)
Function of ATP
Main energy compound of cells
ATP =
ADP + Pi + energy
Speeds up chemical reactions, but not used up or changed
Biological Catalyst
Biological Catalyst lowers
Activation energy
What an enzyme acts on
Substrate
Where substrate binds (very specific shape to fit substrate)
Active site
Enzyme are proteins affected by
pH
Temperature