Fatty Acid Molecule And Compound – Biology

In this chapter we discuss Fatty Acid Molecule And Compound – Biology.


Matter

Anything that has mass and/or takes up space (volume)


Element

A substance that cannot be broken down into other substances by chemical reactions


Molecule

Any combination of atoms


Compound

Two or more different elements combined in a fixed ratio


Atom

Smallest unit of matter that retains the properties of an element


Atomic Number

Number of protons


Mass Number

Number of protons plus neutrons


Atomic Weight

1 mole of a sustance = atomic weight in grams


Isotope

Atom with an abnormal number of neutrons


Proton

Positively charged subatomic particle


Neutron

Subatomic particle with no charge


Electron

Negatively charged subatomic particle


Valence Electron

Outermost electrons in an atom


Covalent Bond

Sharing of electrons (Two non-metals)


Ionic Bond

Electrostatic attraction of positive and negative ions (Metal and Non-metal)


Valence shell

An atom’s outermost electron shell


Polar Covalent Bond

Unequal sharing of electrons due to difference in electronegativity


Cation

Positively charged ion


Anion

Negatively charged ion


Hydrogen bond

Hydrogen atom covalently bonded to an electronegative atoms is attracted to another electronegative atom


Reactants

Starting materials in a reaction


Products

Ending materials in a reaction


Cohesion

Two or more molecules of the same substance held together by hydrogen bonds


Adhesion

Two or more molecules of different substances held together by hydrogen bonds


Surface tension

Measure of how difficult it is to stretch/break the surface of a liquid


Specific heat

Amount of heat absorbed to change the temperature by 1 degree C for 1 g of a substance


Heat of vaporization

Quantity of heat required to turn liquid to gas


Evaporative cooling

As liquid evaporates surface cools since molecules left behind have less kinetic energy


Solute

The substance that dissolves


Solvent

The dissolving agent in a solution


Hydrophobic

Water fearing (will NOT mix with water)


Hydrophilic

Water fearing (mixes with water)


Temperature

Measure of heat energy as average kinetic energy


Insulation

Water is less dense as a solid, freezing creates protective barrier


Acid

Substance that increases [H+]


Base

Substance that decreases [H+]


Buffer

Substance that minimizes changes in [H+] or [OH-] in a solution


Structural Isomer

Diiference in the covalent arragnement of atoms


Enantiomers

Mirror image isomers (like your left and right hand)


Monomer

Building block (repeating units)


Polymer

Long molecule consisting of many repeating units linked by covalent bonds


Dehydration reaction

Monomers are joined together and a water molecule is lost


Enzymes

Special macromolecules that speed up reactions in cells


Hydrolysis

Polymers are disassembled and a water molecule is used


Carbohydate

Includes both sugars and polymers of sugars


Polysaccharides

Polymers with hundreds to thousands of monosaccharides


Starch

Sugar storage molecule for plants, made of glucose monomers (Alpha linked)


Glycogen

Sugar storage molecule for animals, made of glucose monomers (Alpha linked), extensively branched


Cellulose

Major component of plant cell walls, made of glucose monomers (Beta linked), never branched


Fat

Made of glycerol and fatty acids


Triglyceride

Three fatty acids linked to one glycerol


Saturated fat

No double bonds in fatty acid chain, solid at room temperature


Unsaturated fat

Double bonds in fatty acid chain, liquid at room temperature


Saturated and unsaturated Fatty acid. Fatty Acid Molecule And Compound - Biology

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