Chap 1-3 Flashcards
ATom’s interact to form
Molecules
This is the smallest unit of matter that enters into chemical reactions
Atom
Atoms are composed of
Electrons protons and neutrons
Negatively charged particles
Electrons
Positively charged particles
Protons
Uncharged particles
Neutrons
Each chemical element has a different number of
Protons
Isotopes of an element or Atoms with different numbers of
Neutrons
The number of missing or extra electrons in the shell is known as the
Valance
Molecules hold together because the valance electrons of the combining Atoms form attractive forces called
Chemical bonds
The number of protons and electrons is equal in an atom with this type of bond
Ionic bond
Charged Adams that have gained or lost electrons
Ions
This type of bond is a compound that contains different kinds of Adams
Chemical bonds
These type of bonds are attractions between ions of opposite charge
Ionic bonds
These type of bonds formed when two atoms share one or more pairs of electrons
Covalent bonds
This type of bond forms when a hydrogen Adam that is covalently bonded to an oxygen or nitrogen Adam is attracted to another nitrogen or oxygen Adam and another molecule
Hydrogen bonds
This type of reaction occurs when Adams ions or molecules combined to form new larger molecules
Synthesis reactions
This reaction is the synthesis of molecules in the cell
Anabolism
These types of reactions are part synthesis and part decomposition
Exchange reactions
This type of reaction involves the making or breaking of bonds between Adams
Chemical reactions
A change in ____ ____occurs during a chemical reaction
Chemical energy
Reactions that absorb energy
Endergonic
Reactions that release energy
Exergonic
This type of reaction occurs when a molecule is split into smaller molecules ions or Adams
Decomposition reactions
The decomposition reactions in a cell
Catabolism
These types of reactions can readily go in either direction and each direction may need special conditions
Reversible reactions
These compounds always contain carbon and hydrogen
Organic compounds
These compounds typically lack of carbon
In organic compounds
Polar substances dissociates forming
Solutes
These are substances that dissociate into one or more hydrogen
Acids
These are substances that dissociates into one or more OH-
Bases
These are substances that dissociate into cations and anions, neither of which is H+ or OH-
Salts
The chain of carbon Adams in an organic molecule is the
Carbon skeleton
Small organic molecules can combine into large
Macro molecules
______ are polymers consisting of many small repeating molecules
Macromolecules
The smaller molecules found in organic compounds are called
Monomers
These are formed when two monosaccharides are joined in a dehydration synthesis
Disaccharides
These carbohydrates can be broken down by hydrolysis
Disaccharides
These are simple sugars with 3 to 7 carbon Atoms
Monosaccharides
This carbohydrate consist of 2 to 20 monosaccharides
Oligosaccharides
These carbohydrates consist of tens of hundreds of monosaccharides joined through dehydration synthesis
Polysaccharides
Starch, glycogen, dextran, and cellulose are polymers of _____ that are covalently bonded differently
Glucose
_____ is a polymer of two sugars repeating many times
chitin
Contains glycerol and fatty acids formed by dehydration synthesis
Fats
This simple lipid has no double bonds
Saturated fat
The simple lipid has one or more double bonds in the fatty acids
Unsaturated fat
In this simple lipid the H atom is found on the opposite side of the double bond
Trans fat
primarily consist of cell membranes
consist of C,H,O
Are nonpolar and insoluble in water
Lipids
These lipids contain C, H, and O +P, N, or S
Complex lipids
With these lipids the membranes are made of phospholipids
Complex lipids
Four carbon rings with an -OH group attached to one ring; part of membranes
Steroids
____ are Essential in cell structure and function
Proteins
______ are proteins that speed chemical reactions
Enzymes
______ _____ move chemicals across membranes
Transporter proteins
Proteins consist of subunits called
Amino acids
______ bonds between amino acids are formed by dehydration synthesis
Peptide
The primary structure of protein is a
Polypeptide chain
These amino acids exists in either of two stereoisomers
D or L
L forms of amino acids are most often found in
Nature
The structure of protein occurs when the amino acid chain folds and coils in a regular helix or pleats
Secondary structure
The structure of protein occurs when the helix fold in regularly, forming disulfide bridges,hydrogen bonds, and ionic bonds between amino acids in the chain
Tertiary structure
The structure protein consist of two or more polypeptides
Quaternary structure
These proteins consist of amino acids and other organic molecules such as glycoproteins, nucleoproteins, and lipoproteins
Conjugated proteins
The structure exist as a double helix; A hydrogen bonds with T, C hydrogen bonds with G
DNA
Has ribose, is single-stranded, A hydrogen bonds with U, C hydrogen bonds with G
RNA
Has ribose, adenine, and three phosphate groups
ATP