the isoelectric point of a molecule is the pH where that molecule
a) has a charge of +1
b) has a charge of -1
c) has no net charge
d) none of these are correct c) has no net charge
the major unifying concepts (theories) of biology include
a) cells use the same laws of bioenergetics to function as the laws of the physical universe
b) the theory of evolution
c) the Cell Theory
d) all of these d) all of these
the movement of water to the top of very tall trees is due to which of the following properties
of the water molecules
a) its specific heat
b) its heat of fusion
c) its heat of vaporization
,d) its surface tension
e) none of these is correct d) its surface tension
e) none of these is correct
the oldest known scientific society is likely the
a) National Academy of Science
b) Royal Society of London
c) Florida Academy of Science
d) Sigma Xi Scientific Research Society
e) Paleontological Society b) Royal Society of London
the permanent geometry of a molecule that cannot be changed without breaking chemical
bonds is referred to as the molecules
a) conformation
b) hydrophobicity
c) structural formula
d) configuration
e) none of these are correct d) configuration
The pH where there is no net charge on an ionizable molecule is known as its
,a) zwitterion
b) ionization point (pK)
c) isoelectric point
d) D-optical isomer
e) none of these is correct c) isoelectric point
The population pyramid shown is an example of a population exhibiting (same length for
bottom 4 and gradually gets smaller for top 4)
a) rapid exponential growth
b) moderate exponential growth
c) little to no growth
d) that of a developing country
e) none of these is correct b) moderate exponential growth
the predicted value of Replacement Level Fertility for a human reproductive couple is
a) 7 billion
b) 5 or more
c) 2.1
d) 5%
, e) none of these are correct c) 2.1
The tertiary level of 3D protein structure is stabilized by
a) ester bonds only
b) hydrogen bonds only
c) interaction with the molecular environment
d) glycosidic bonds
e) none of these is correct c) interaction with the molecular environment
To be of value to science, hypotheses must be _____.
a) established facts
b) reproducible
c) popular
d) testable and falsifiable
e) none of these is correct d) testable and falsifiable
Type of chemical reaction acting upon the polymer shown is described as (HO on end, 3 blocks
bonded, H2O inserted on bond between 3rd and 4th block, H on right end)
a) condensation reaction