Download The Chemical Basis for Life Vocabulary Worksheet 1 Answers

The Chemical Basis for Life Vocabulary Worksheet 1 Answers
Student Name: ____________________________________
Teacher Name: Richard Eckert
Date: __________
Score: __________
Define these terms:
Activation Energy This is the energy needed by a system to initiate a process.
Active Site This is a specific region of an enzyme where a substrate binds and the chemical reaction occurs.
Biomolecule These are chemical compounds, primarily carbon and hydrogen, that exist in living organisms.
Dehydration Synthesis This is a type of chemical reaction that involves the loss of water from the reacting
molecules. In biological systems, it usually refers to the production of larger, biomolecules or polymers from
smaller monomers.
Denature This is a change in the structure of a protein due to changes in the environment, like temperature
or pH.
Match the term on the left with its definition on the right:
_O_ Acid
A. This is a temperature where the vapor pressure of a liquid equals the
atmospheric pressure.
_I_
B. A bond in which atoms share electrons.
Adhesion
__D Amino Acids
C. These are chemical substances with a measurable pH above that of
7.0 on a 0-14 scale.
G__ Aqueous
D. This is a molecule that contains both amino and carboxylic acid
functional groups. They are the building blocks of protein.
_C_ Base
E. This is a compound made up of carbon, hydrogen, and oxygen atoms;
it is used by cells to store and release energy. Sugars are made by
chloroplasts through photosynthesis and consumed by mitochondria
through cell respiration.
_P_ Base Pair Rule
F. This is an element in the periodic table that is the basis for all organic
molecules.
H__ Biomolecule
G. This is a solution whose solvent is water.
A__ Boiling Point
H. These are chemical compounds, primarily carbon and hydrogen, that
exist in living organisms.
E__ Carbohydrate
I. This is the attraction between molecules of different substances.
F__ Carbon
J. This is a bond in which two pairs of electrons are shared between two
atoms.
K__
K. This is a substance, like an enzyme, which speeds up chemical
reactions, but does not react itself.
Catalyst
M__ Chemical Reaction
L.
N__ Cohesion
M. The changing of substances to other substances by the breaking of
bonds in reactants and the formation of bonds in products.
B__ Covalent Bond
N. This is the attraction between molecules of the same substance.
_Q_ DNA
O. A compound that produces hydrogen ions in solution, is a hydrogenion donor, or an electron-pair acceptor.
J__
P.
Double Bond
This is the structure of DNA as first published by James Watson and
Francis Crick in 1953.
This is the foundation for DNA replication, the rule that states the
purine adenine (A) always pairs with the pyrimidine thymine (T) and
the pyrimidine cytosine (C) always pairs with the purine guanine (G).
_L_ Double Helix
Q.
This holds an organisms hereditary information.