Biology Exams 1-4
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1. Which of the following statements is NOT true of all They require oxy-
living things? gen.
2. A solution with a pH of 4 has how many more H+ 1000 times more
(hydrogen ions) than a solution with a pH of 7?
3. Hydrogen bonds can form between water molecules the oxygen atom
because in a water mole-
cule has a slight
negative charge
while the hydro-
gen atoms have
a slight positive
charge.
4. The image below represents a model of the molecular More than one of
structure of collagen (the major protein found in skin, the above.
ligaments, and tendons). Notice that it consists of 3
separate chains of amino acids. This protein displays:
5. Which of the following is true concerning the mole- It represents a sat-
cule illustrated below? urated fat.
6. If one strand of a DNA molecule has the sequence of 3'-TAAGCT-5'
bases 5'-ATTCGA-3', the complimentary strand would
have the sequence
7. Lipitor is a drug that binds to the active site of the competitive inhibi-
HMG-CoA enzyme thus reducing the amount of cho- tion
lesterol synthesized in the liver. In general, by what
mechanism does Lipitor work?
8. Which of the following is true of the atom below? It can form two
Assume that it is a neutral atom. covalent bonds, it
has an atomic
number of 8, and
it's nucleus must
contain 8 protons.
9.
, Biology Exams 1-4
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J. Hämmerling conducted experiments with Acetabu- Genes from
laria that investigated which part of the cell controlled A. mediterranea
growth and development. One of his experiments is were expressed in
outlined below. Based on this experiment as well as A. crenulata. This
information in your Active Learning Activity, how are resulted in the for-
these results explained? mation of mRNA
that was released
from the nucle-
us and directed
the formation of
a new A. mediter-
ranea-type cap.
10. Which of the following is NOT a component of the cell cells are the only
theory: units that display
homeostasis.
11. Altering which of the following structural organiza- altering any of the
tion levels of a protein could disrupt the function of following levels of
the protein? organization could
disrupt the func-
tion of a protein.
12. What is the atomic mass of an ion with 51 electrons, 106
53 neutrons, and a +2 charge?
13. Two cells are identical in size, shape, and structure. Cell A was hyper-
The only difference is the concentration of solutes tonic to cell B.
within the two cells. Both cells are placed in a 1%
sugar solution. Cell B enlarges for a while, then stops.
Cell A continues to enlarge and finally ruptures.
Which of the following was true at the beginning of
the experiment?
14. Which aspect of phospholipids makes them useful in Their hydropho-
the formation of cell membranes? bic regions ori-
ent away from wa-
ter while their hy-
drophilic regions
, Biology Exams 1-4
Study online at https://quizlet.com/_fbu4wy
orient toward wa-
ter.
15. Which of the following is true of the molecule illus- It represents a dis-
trated below? accharide.
16. A gene contains the following sequence of DNA 5' AUUGGCGUA
bases: 3' TAACCGCAT 5' 3'
17. Refer to the following figure for this question as well "B" represents the
as the next one. Compare the reaction labeled "A" reaction catalyzed
with the reaction labeled "B". Which of the following by an enzyme.
statement is true concerning those two reactions?
18. Which of the following is true of reaction "A" in the It is exergonic.
previous figure?
19. Consider Chargaff's data below. What conclusions Purines (which in-
did Watson and Crick draw from these data? clude "A" and "G")
likely form bonds
with pyrimidines
(which include "T"
and "C") since the
combined amount
of purines tends
to be the same
as the combined
amount of pyrim-
idines within each
species.
20. Consider the data below. What conclusions can be Trans fats pose a
drawn? significant health
threat since they
cause HDL levels
to decrease and
LDL levels to in-
crease.
21.
Study online at https://quizlet.com/_fbu4wy
1. Which of the following statements is NOT true of all They require oxy-
living things? gen.
2. A solution with a pH of 4 has how many more H+ 1000 times more
(hydrogen ions) than a solution with a pH of 7?
3. Hydrogen bonds can form between water molecules the oxygen atom
because in a water mole-
cule has a slight
negative charge
while the hydro-
gen atoms have
a slight positive
charge.
4. The image below represents a model of the molecular More than one of
structure of collagen (the major protein found in skin, the above.
ligaments, and tendons). Notice that it consists of 3
separate chains of amino acids. This protein displays:
5. Which of the following is true concerning the mole- It represents a sat-
cule illustrated below? urated fat.
6. If one strand of a DNA molecule has the sequence of 3'-TAAGCT-5'
bases 5'-ATTCGA-3', the complimentary strand would
have the sequence
7. Lipitor is a drug that binds to the active site of the competitive inhibi-
HMG-CoA enzyme thus reducing the amount of cho- tion
lesterol synthesized in the liver. In general, by what
mechanism does Lipitor work?
8. Which of the following is true of the atom below? It can form two
Assume that it is a neutral atom. covalent bonds, it
has an atomic
number of 8, and
it's nucleus must
contain 8 protons.
9.
, Biology Exams 1-4
Study online at https://quizlet.com/_fbu4wy
J. Hämmerling conducted experiments with Acetabu- Genes from
laria that investigated which part of the cell controlled A. mediterranea
growth and development. One of his experiments is were expressed in
outlined below. Based on this experiment as well as A. crenulata. This
information in your Active Learning Activity, how are resulted in the for-
these results explained? mation of mRNA
that was released
from the nucle-
us and directed
the formation of
a new A. mediter-
ranea-type cap.
10. Which of the following is NOT a component of the cell cells are the only
theory: units that display
homeostasis.
11. Altering which of the following structural organiza- altering any of the
tion levels of a protein could disrupt the function of following levels of
the protein? organization could
disrupt the func-
tion of a protein.
12. What is the atomic mass of an ion with 51 electrons, 106
53 neutrons, and a +2 charge?
13. Two cells are identical in size, shape, and structure. Cell A was hyper-
The only difference is the concentration of solutes tonic to cell B.
within the two cells. Both cells are placed in a 1%
sugar solution. Cell B enlarges for a while, then stops.
Cell A continues to enlarge and finally ruptures.
Which of the following was true at the beginning of
the experiment?
14. Which aspect of phospholipids makes them useful in Their hydropho-
the formation of cell membranes? bic regions ori-
ent away from wa-
ter while their hy-
drophilic regions
, Biology Exams 1-4
Study online at https://quizlet.com/_fbu4wy
orient toward wa-
ter.
15. Which of the following is true of the molecule illus- It represents a dis-
trated below? accharide.
16. A gene contains the following sequence of DNA 5' AUUGGCGUA
bases: 3' TAACCGCAT 5' 3'
17. Refer to the following figure for this question as well "B" represents the
as the next one. Compare the reaction labeled "A" reaction catalyzed
with the reaction labeled "B". Which of the following by an enzyme.
statement is true concerning those two reactions?
18. Which of the following is true of reaction "A" in the It is exergonic.
previous figure?
19. Consider Chargaff's data below. What conclusions Purines (which in-
did Watson and Crick draw from these data? clude "A" and "G")
likely form bonds
with pyrimidines
(which include "T"
and "C") since the
combined amount
of purines tends
to be the same
as the combined
amount of pyrim-
idines within each
species.
20. Consider the data below. What conclusions can be Trans fats pose a
drawn? significant health
threat since they
cause HDL levels
to decrease and
LDL levels to in-
crease.
21.
