1.
Which of the following is
not
a feature of scie
ntific hypotheses?
A)
They are true.
B)
They make predictions.
C)
They are based on observations.
D)
They can be tested by experimentation.
E)
They can be tested by observational analysis.
2.
Members of the kingdom Animalia obtain their energy from
A)
decomposing organic matter.
B)
photosynthesis.
C)
other organisms.
D)
sunlight.
E)
inorganic molecules.
3.
After observing that fish liv
e in clean water but not in polluted water, you make the
statement, “polluted water kills fish.” Your statement is an example of
A)
scientific inquiry.
B)
biological evolution.
C)
a prediction.
D)
a hypothesis.
E)
a theory.
4.
Count de Buffon thought that pigs have small functionless toes because
A)
they are evolving toward having functioni
ng toes but have not yet reached the goal.
B)
they have defective toe-pr
oducing information in their DNA.
C)
they evolved from ancestors that had functioning toes.
D)
constant parasitization over gene
rations caused the loss of their toes.
E)
All of the above
5.
Eukarya include
A)
Protista.
B)
Plantae.
C)
Fungi.
D)
Animalia.
E)
All of the above
Page 1
6.
Ozone is important to life on Earth because it
A)
is toxic to all forms of life.
B)
can be used in place of oxygen.
C)
blocks much ultraviolet radiation.
D)
provides energy to some basic forms of life.
E)
disinfects.
7.
Ionic bonds are
A)
attractions between oppositely charged ions.
B)
the result of electron sharing.
C)
the strongest of the chemical bonds.
D)
caused by partial electrical charges.
E)
dependent upon hydrophobic interactions.
8.
Two characteristics of water
make it different from most
other compounds. Its solid
state is _______ its liquid state, and it take
s up _______ heat to change to its gaseous
state.
A)
less dense than; large amounts of
B)
more dense than; small amounts of
C)
less dense than; small amounts of
D)
more dense than; large amounts of
E)
just as dense as; no
9.
The functional group diagramed =O is a(n)
A)
carbonyl.
B)
carboxyl.
C)
aldehyde.
D)
amino.
E)
hydroxyl.
10.
The part of the atom that determines
how the atom behaves chemically is the
A)
proton.
B)
electron.
C)
neutron.
D)
innermost shell.
E)
nucleus.
Page 2
11.
Which pair has similar chemical properties?
A)
1
H and
22
Na
B)
12
C and
28
Si
C)
16
O and
8
S
D)
12
C and
14
C
E)
8
H and
2
He
12.
The number of different elements found in the universe is closest to
A)
12.
B)
24.
C)
48.
D)
100.
E)
192.
13.
The amino acids of the protein keratin are arranged in a helix. This
secondary structure
is stabilized by
A)
covalent bonds.
B)
peptide bonds.
C)
glycosidic linkages.
D)
polar bonds.
E)
hydrogen bonds.
14.
Lipids are
A)
insoluble in water.
B)
readily soluble in organic solvents.
C)
characterized by their solubility.
D)
important constituents of biological membranes.
E)
All of the above
15.
In a biological membrane, the phospholipids
are arranged with the fatty acid chains
facing the interior of the membrane. As a
result, the interior of the membrane is
A)
hydrophobic.
B)
hydrophilic.
C)
charged.
D)
polar.
E)
filled with water.
Page 3
36.
The statement “Enzymes are highly specific” means that certain
A)
enzymes are found in certain cells.
B)
reactions involving cert
ain substrates are catalyzed by certain enzymes.
C)
enzymes require certain c
oncentrations of substrates.
D)
reactions with certain activation ener
gies are catalyzed by certain enzymes.
E)
concentrations of substrates
work with certain enzymes.
37.
For bacteria to continue gr
owing rapidly when they are
shifted from an environment
containing oxygen
to an anaerobic environment, they must
A)
increase the rate of the citric acid cycle.
B)
produce more ATP per mole of glucose during glycolysis.
C)
produce ATP during the oxidation of NADH.
D)
increase the rate of transport of
electrons down the respiratory chain.
E)
increase the rate of
the glycolytic reactions.
38.
How does the reduction of pyruvate to lactic
acid during fermenta
tion allow glycolysis
to continue in the absence of oxygen?
A)
Water is formed during this reaction.
B)
This reaction is a kinase reaction.
C)
This reaction is coupled to
the oxidation of NADH to NAD
+
.
D)
This reaction is coupled to the formation of ATP.
E)
This reaction is coupled to the reduction of NAD
+
to NADH.
39.
Yeast cells tend to create anaerobic cond
itions because they use oxygen more quickly
than it can be replaced by diffusion through the cell membrane. For this reason, yeast
cells
A)
exhibit a red pigment.
B)
exhibit a green pigment.
C)
die.
D)
produce ethanol.
E)
None of the above
Page 8
40.
In steps 6 through 10 of glycolysis, the c
onversion of one mole
of glyceraldehyde 3-
phosphate to pyruvate yields 2 moles of ATP.
But the oxidation of
glucose to pyruvate
produces a total of 4 moles of ATP. Wher
e do the remaining 2 moles of ATP come
from?
A)
One mole of glucose yields 2
moles of glyceraldehyde 3-phosphate.
B)
Two moles of ATP are used during the
conversion of glucose to glyceraldehyde 3-
phosphate.
C)
Glycolysis produces 2 moles of NADH.
D)
Fermentation of pyruvate to lact
ic acid yields 2 moles of ATP.
E)
Fermentation of pyruvate to lact
ic acid yields 2 moles of NAD
+
.
41.
When the supply of acetyl CoA being produced
exceeds the demands of
the citric acid
cycle, some of the acetyl
CoA is diverted to the synthesis of
A)
pyruvate.
B)
NAD.
C)
proteins.
D)
fatty acids.
E)
lactic acid.
42.
Which of the following is true of metabolic pathways?
A)
Complex chemical transformations in
the cell occur in
a single reaction.
B)
Each reaction in a pathway requires oxygen.
C)
Metabolic pathways in eukar
yotes occur in the cytoplasm.
D)
Metabolic pathways vary from organism to organism.
E)
Each metabolic pathway is regulated by specific enzymes.
43.
When a cell needs energy, ce
llular respiration is
regulated by isocitrate dehydrogenase,
an enzyme of the
citric acid cycle. This enzyme is stimulated by
A)
H
+
.
B)
heat.
C)
oxygen.
D)
ADP.
E)
None of the above
Page 9
44.
NAD
A)
is a key electron ca
rrier in redox reactions.
B)
requires oxygen to function.
C)
is found only in prokaryotes.
D)
binds with an acetyl group to form acetyl CoA.
E)
detoxifies hydrogen peroxide.
45.
Which of the following are guidelines or rule
s dealing with on-line
quizzes in BIO 121?
A)
Quizzes are "closed-book quizzes." This means you are
not
allowed to use your
textbook, notebook, or any other resources while you take the quiz.
B)
Quizzes and answers may not be printed nor shared with other students.
C)
You may take each quiz only once; once
you begin to take a quiz be sure to
complete it before pressing "Submit."
D)
If you violate any of the guidelines a
nd policies stated on the syllabus, you will
receive a grade of zero on
all
quizzes, and therefore recei
ve a reduction of nearly
27% in your BIO 121 grade.
E)
All of the above
46.
Essay/Problem [10 pts.]
Explain the importance of the theory
of evolution in the field of biology.
Be sure to place your answer on the answer sheet.
Page 10
Answer Key
1.
A
2.
C
3.
D
4.
C
5.
E
6.
C
7.
A
8.
A
9.
A
10.
B
11.
D
12.
D
13.
E
14.
E
15.
A
16.
C
17.
C
18.
B
19.
C
20.
D
21.
E
22.
E
23.
E
24.
D
25.
D
26.
A
27.
A
28.
D
29.
B
30.
A
31.
A
32.
A
33.
B
34.
E
35.
B
36.
B
37.
E
38.
C
39.
D
40.
A
41.
D
42.
E
43.
D
44.
A
Page 11
45.
E
Give some thought to the answer to the essay question.
Page 12
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