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27 Cards in this Set

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PROKARYOTIC CELLS

Simple cells; Ex: bacterias


Kingdom- Archeabacteria: (400 hundred million yrs ago) "extremophiles"


Kingdom- Monera: "Most bacterias" & cyanobacteria which is Blue/Green Algae

EUKARYOTIC CELLS

Complex cells, 1 &1/2 billion yrs ago


Kingdom- Protista; ameba & Parmecium


EUKARYOITC MULTICELLULAR

Have 3 Kingdoms: Plantae, Animalia &, Fungi


Plantae: Producer; take water carbon dioxide & sugar and convert into food.


Animalia: Consumers; take sugar in the presence of oxygen to produce water and carbon dioxide.


Fungi: Decomposers; important to keep cycles going. Ex: Mushrooms

MATTER-


WEIGHT-


MASS-

Has Mass and takes up space.


Force of gravity.


Number of molecules.

ELEMENT

Pure substance that cannot be broken by chemical mean.


-created in stars; 96% made of C, H, O, & N


-nuclear reaction are the only way change/make elements.


-14.2 million yrs Hydrogen was created in the BigBang & some Helium.


ATOM

Smallest amount of matter.


- made of Protons, Nuetrons &, Electrons.


Electrons: maded around the nucleus and the nucleus is made up of prtons and nuetrons.

PROTONS:


NUETRONS:


ELECTRONS:

-Positively Charged w/ Atomic weight of 1 = "1DALTON"


-Has a charge of Zero = 1DALTON


-Negatively Charged = Very Low Mass

ATOMIC NUMBER

-number of protons in nucleus


-unique for each number


-cannot change


-subscript to the left of the symbol

ATOMIC MASS

Mass of an Atom


Protons & Neutrons

ISOTOPES

C- 6P +6N =12 "Atomic Mass"


C- 6P +7N =13 " "


C- 6P +8N =14 " " < RADIOACTIVE>

CATION-


ANION-


MOLECULES-

Atom/Molecule that has a positive charge."loses electrons'


Atom/Molecule that has a negative charge." gains electrons"


2 atoms or more coming together to form a chemical bond.

OCTECT RULE

Energy Levels/shells:


N-1= 2 Electrons


2-4= 8 Electrons


-outter shell called "valence" & has to be filled


Chemistry- ele trons moving b/w valence shell atoms/molecules.

H H O


V ^


H O H H H H


>O Na O< Cl >O


H O H H H H


^ v


H H O


Na2 & Cl2 "DEADLY"

Chemisty: Movement of Electron to form or break bonds



A - B + C - D >>>> A - C + B - D


^ ^


Reactants Products



Water is Electronegative & a POLAR MOLECULE: positive and negative b/w partcialy positive& particaly negative ends of molecules.


"H- an ionic bond"

70% of water in glass: hydrogen bond and lasts for 1 trillionth time of a second.


FREEZING point Water id LESS dense "0 c


4 c water id MOST dense

WATER PROPERTIES

-H Bonds:1. clings to polar molecules. " H2O makes you wet". the attraction b/w polar molecules in clothes and H-bonds in H2O is adhesion. ex: H2O on straw


Cohension- attraction b/w similar substances w/ H-bonds. Ex: leafs on the surface. h-bonds pulling H2O in different directons;H2O high surface tension called the bilayer

2) Stone heat & Moderate temperatures:.


freezing point- 81 & 32 F; melting point- 0 c


3) water is a good solvent- for Hydrophilic (likes H2O) "polar & charged" substances


-solvent: water


-soulte: sugar- polar molecule


: salt- ionic molecule

4) water organizes nonplolar "Hydrophobic" (Hates H2O) molecules: key of life in developing a membrane


5) water ionizes- basis for the pH scale. nuetral pH= 7.0



pH- measure the concetration of free H- ions in solution

CHEMICAL BONDS

1)Ionic bonds (electrical charge)-when opposite charges attract


weak bonds b/c it disolves H2O


stores energy&, All ionic bonds work b/c can eat & disloves in H2O


Na- sodium 11 protons


> electrical nuetral


Cl- chlorine 17 protons

2) Covalent Bonds- electron pair shared b/w atoms & molecules; valence shell share electrons


store energy


H - H single covalent


H = H double covalent


H = H triple covalent; "almost industriable"

Pure H2O- # of hydrogen ions is = to the # of hydroxide ion.Ex H2O= H -HO - p+ H


{ life does better b/w 7 & 8}


0 1 2 3 4 5 6 7 8 9 10 11 12 13 14


Acid - Base


H-protons> than hydroxide is > than


hydroxide H>OH H< OH


Ex: orange& tomatoes Ex. Drano

CARBON

4 valence electron & can form 4 covalent bonds


/\/\/\/\/\= c-c-c-c-c



Fuctiona group- specific groups of atoms attached to the carbon skeleton


1. hydroxly R- OH > hydroxide ion



2. carbonyl R-C-R



3. carboxyl R-C



4. amino R-N important for A.Acids

5 sulfhydrly R-SH disulfide bridges



6 phosphate R-O-P-O energy



7 methyl R-CH

BIOLOGICAL MOLECULES

1) carbohydrates- "repeating subunit"- CHO


2) Protiens_ " " A.Acids; theres 20


polymers of A.Acids; several level structures


3) lipids- fats " " CH


4) Nucleic Acid" " nucleotides; theres 4

POLYMER


MONOMERS


DEHYDRATION SYNTHESES

Large molecules made of many identicle subunits


Subunits


Syntheses of a ploymer from monomers, loss of one H2O molecule per each bond formed

PRIMARY STRUCTURE

specific A.Acid sequence;


AA20- AA1- AA7- AA13-AA17


protiens. enzymes> biological catalysts speeds up chemical reaction


Peptide- molecules of emotions; small chain of A.A


" genes of a specific protien make you look like your dad/uncle etc.

SECOND STRUCTURE

-Alpha Helix-~~~~~~


- Beta Pleated Sheet- /\/\/\/\/\/\

TERIARY STRUCTURE


QUATERNARY STRUCTURE


DENATURE PROTIEN

folding the primary structure


Hemoglobin


3D changed; you destroy and the protien wont work anymore


-

NUCLEIC ACIDS

Information:


DNA: 4 Nucleotides


stands for deoxyribose nucleic acid


deoysribos = sugar


RNA: 4 Nucleotides


stads for ribo nucleic acid


ribose= sugar


Both Dna & RNA are Polymers


NITROGEN CONTAING BASES

1) Purine Base- Adenine & Quanine (both RNA&DNA; Has Double Base



2)Pyrmidine Base- Cytocine & Thymine (DNA)


Cytocine & Uarcil (RNA)


- has single base