Accuplacer Biology Placement Exam Review with
Questions Solved 100% Correct| Verified Answers
High heat of vaporization - ANSWER Water vaporizes at a high heat.
High heat of fusion - ANSWER Water freezes at a high temperature
High specific heat - ANSWER Water can absorb or release a tremendous ...
High heat of vaporization - ANSWER Water vaporizes at a high heat.
High heat of fusion - ANSWER Water freezes at a high temperature
High specific heat - ANSWER Water can absorb or release a tremendous amount of energy
with little change in actual temperature. The ability of water to resist changes in temperature.
1 gram of water will need to absorb 4.18 Joules (amount of heat) in order to increase its
temperature by 1 degree Celsius.
pH - ANSWER pH is the measure of acidity. The more H+, the more acidic.
Measure of the H+ in solution - ANSWER pH
Acids - ANSWER substances that release hydrogen ions when dissolved in water
Bases - ANSWER Compounds that reduce the concentration of hydrogen ions in a solution.
Buffers - ANSWER substances that minimize changes in pH
Carbon compounds - ANSWER carbohydrates, lipids, nucleic acid, proteins. Any molecule
that contains carbon is a carbon compound, and usually carbon forms the skeleton of that
compound.
Hydrocarbons - ANSWER Compounds composed of only carbon and hydrogen. As the
backbone of the large molecules of living things, hydrocarbons may exist as linear carbon
,chains, carbon rings, or combinations of both. Furthermore, individual carbon-to-carbon bonds
may be single,
double, or triple covalent bonds, and each type of bond affects the geometry of the molecule
in a specific way.
Functional groups - ANSWER chemical groups attached to carbon skeletons that give
compounds their functionality
-OH - ANSWER Hydroxide. Functional group that is a base, a ligand, a nucleophile and catalyst.
-COOH - ANSWER carboxyl group (carboxylic acid)
-NH2 - ANSWER amino group, amphoteric.
-SH - ANSWER sulfhydryl, acid
-PO42- - ANSWER Phosphate, base,
-C=O - ANSWER carbonyl, acids
Biological molecules - ANSWER the chemical compounds that provide physical structure
and that bring about movement, energy use, and other cellular functions.. carbohydrates,
lipids, proteins, nucleic acids
Monomer -> polymer - ANSWER dehydration synthesis. when a monomer is turned into a
polymer, an anabolic reaction occurs- energy is absorbed to create a more complex molecule.
Dehydration synthesis (condensation) - ANSWER A chemical reaction in which two molecules
covalently bond to each other with the removal of a water molecule.
, basically, imagine two different molecules and put an h2o that is bonded to both of them in
the middle. when you remove the h20, the molecules bond together. COVALENTLY
Hydrolysis - ANSWER Breaking down complex molecules by the chemical addition of water.
Reverse of dehydration synthesis. Polymer to monomer.
Carbohydrates - ANSWER Carbohydrates (complex sugars) are broken down to glucose
(simple sugar) which are processed and turned into ATP for the cells to use.
Functional groups - hydroxyl and carboxyl - ANSWER A carboxyl group consists of a carbonyl
and hydroxyl group bound by a carbon atom. The carbonyl group is a carbon double-bonded
to an oxygen (O=H), while the hydroxyl group consists of an oxygen and hydrogen bonded
together (OH). When combined, creates carboxylic acid. They are acids.
Monosaccharides -> polysaccharides - ANSWER Simple sugar to complex sugar. Dehydration
synthesis. Sometimes called condensation reaction because suddenly water appears.
Glucose -> starch, glycogen and
Cellulose - ANSWER Basically, monosaccharide to polysaccharide (polymerization). Cellulose is
a straight chain of molecules (beta-chain), and starch and glycogen are branched (alpha-chain)
Functions in the cell - ANSWER 1. cell metabolism and energy use
2. synthesis of molecules
3. communication
4. reproduction and inheritance
Energy sources, structural - ANSWER Through the process of cellular respiration, the energy in
food is converted into energy that can be used by the body's cells. During cellular respiration,
glucose and oxygen are converted into carbon dioxide and water, and the energy is
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