Study BIOLOGY CHAP. 2 QUIZ Flash Cards

 
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BIOLOGY CHAP. 2 QUIZ

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enzymes
speed up chemcial reactions that take place in cells.
chemcial reactions that release energy often occur spontaneously. chemical reactions that _____ energy will not occur without....
absorb without a source of energy.
chemcial reactions always involve changes to the _____ that join atoms in compounds.
chemical bonds.
Some protiens control the rate of _____ and regulate cell _______some are used to form bones and ______. others transport substancesinto or out of cells or help to fight disease.
reactions processes muscles
lipids can be used to _______ _____.
lipids can be used to store energy.
fourgroups of organic compounds
lipids, protiens, carbohydrates, nucleic acids.
carbohydrates are a main source of ____
energy!
a water molecule
is polar becauuse of an uneven distribution of electrons between H and O.
covalent
shared.
iionic bond:
transfered electrons
the main type of chemical bonds are :
ionic bonds
covalent bonds.
buffers
weak acids or bases that react to prevent large changes
base
hydroxie ions in a solution
acid
H+
pH scale
H+ = acid OH+ = basic
scale ranges from 0-14
suspensions
such mixtures of water and nondissolved matterials
solvent
substance in which solute dissolves
solute
substance that is dissolved
solution
forming a type of mixture
adhesion
attraction from
DIFFERENT
substances

aDhesion D= different substances
choesion
attraction from molecules in the
SAME
substance.

choeSion S= same substance
products
elements produced by a chemical reaction
activation energy
energy needed to get a reation started
products
elements produced by a chemiclal reaction
reactants
erlements that enter a chemical reaction
chemical reaction
process that changes one set of chemicals into another
polymerization
bonds polymers
amino acid
protiens are polymers of molecules
protien
macromolecules that contain nitrgoen as well as carbon hydrogen and oxygen
Dna
sugar nucleic acid
RNA
sugar ribus
necleotide
polhymer assembled from individual monomers known as nucleotides.
three parts. carbon, phosphate, nitrogenous, and ribonucleic acid. and sugar ribose nucleic acid.
NOT IMPORTANT
nucleic acid
genetic information
lipid
not soluble in water made of mostly Carbon and Hydrogen
polysaccride
large macromolecules formed from monosaccharides
monosaccharide
single sugar molecules
carbohydrate
energy
polymer
?
monomer
\
van derr waals
intermolecular forces of attraction. when molecles are so close tgether a slight attraction can develop between oppositely charged regions of nearby molecules
molecule
smallest unit of componds
covalent bond
sharing of electrons
ion
charged atom
ionic bond
giving or taking electrons to form ions
compound
substance formed by chemical comination of two or more elements in definate porportions.

s
element
pure substance that consitits of one type of atom
electron
negitivly charged partical
nucleus
center of an atom. consists of protons and neutrons
ATOMS
basic unit of matter.
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