Download Which of the following does not explain carbon`s ability to form long

Which of the following does
not explain carbon's ability
to form long chains.
A. Carbon can form 4
covalent bonds.
B. Carbon can form 4 ionic
bonds.
C. Carbon only has four
electrons in its outer energy
level.
D. Carbon can bond with four
other molecules.
What allows many landdwelling organisms to
maintain body temperature
by eliminating excess heat?
A. Water’s ability to
evaporate
B. Water’s movement by
capillary action
C. Water’s capacity to
dissolve substances
D. Water’s formation of ions
in solution
What is the principal
inorganic solvent in cells?
A. salt
B. water
C. alcohol
D. CO2
One of the carbon
compounds found in a cell
has twice as many hydrogen
atoms as oxygen atoms. This
compound most likely
belongs to the group of
substances known as:
A. nucleic acids.
B. lipids.
C. proteins.
D. carbohydrates.
Carbohydrates are stored in
the liver and muscles of
animals in the form of:
A. cellulose.
B. glycerol.
C. glycogen. D. enzymes.
Which of the following is not
a protein?
A. Hair
B. Hemoglobin
C. Enzymes D. Cellulose
Which of the following
molecules represents a
saturated fatty acid?
A.
B.
C.
The "lock and key" model
of enzyme action illustrates
that a particular enzyme
molecule:
A. forms a permanent
enzyme-substrate complex.
B. may be destroyed and
resynthesized several times.
C. interacts with a specific
type of substrate molecule.
D. reacts at identical rates
under all conditions.
Which concept is illustrated
by the reaction shown in the
diagram above?
A. proteins can be denatured
B. enzymes are specific
C. enzymes break down by
oxidation-reduction
D. molecules use facilitated
diffusion