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Biology Chapter 2

by: Azanay Notetaker

Biology Chapter 2 14904

Azanay Notetaker
GPA 3.0

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About this Document

Notes over water and organic compounds
Human Biology
Aldemaro Romero
Class Notes
25 ?




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This 2 page Class Notes was uploaded by Azanay Notetaker on Friday January 29, 2016. The Class Notes belongs to 14904 at Southern Illinois University Edwardsville taught by Aldemaro Romero in Spring 2016. Since its upload, it has received 16 views. For similar materials see Human Biology in Biology at Southern Illinois University Edwardsville.

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Date Created: 01/29/16
Biology 140- Chapter 2 &3 Water & Organic Compounds Water Molecule One oxygen gas molecule + Two hydrogen gas molecules= Water molecule Hydrogen- Has a positive polar charge Oxygen- Has a negative polar charge Positive charge with negative makes a hydrogen bond 4 Characteristics of Water 1. Solvent 2. Temperature Buffer- Reacts slowly to temperature 3. Metabolism- Water is a part of all chemical reactions 4. Living Environment Organic Compounds Large and complex molecules Usually associated with hydrogen 4 Major Organic Compounds  Carbohydrates (Sugars)  Lipids (Fats)  Proteins  Nucleic Acid. Carbohydrates  Fructose  Glucose  One molecule of fructose and one molecule of glucose makes sucrose. Lipids  Hydrophobic  Three different types of fats: Saturated, Unsaturated, and Trans fat  Steroids (Fats)  Lipogenesis- Sugars turn into fats  Phospholipids- (found in the cell membrane) Long molecule to maintain stability and is impermeable to water Nucleic Acids DNA RNA Double Helix Single Helix Has Thymine Has Uracil


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