Exam 1 BioS 101
NAME
__________________________
80 points @ 2 per
question
Form A
TA Name
________________________
Choose the best
available choice and mark your answer with a #2 pencil on the accompanying
answer sheet. Read all choices
before answering the question. Turn
in both your answer sheet and this exam to your TA as you leave. Each question is worth 2
points.
1. Which family of
plants has the most agriculturally important domesticated plant
species?
a) Leguminosae (beans)
b) Solanaceae (tomatoes) c) Umbelliferae (carrots)
d) Gramineae (grasses) e) Liliaceae (onions)
2. In the Medieval
Science Lab, the experimental design included four vials of fruit flies
for both the control and treatment groups. Which of the following experimental
concepts do you associate with multiple vials?
a) reproducibility
b) falsifiability c) replication d) scientific
paradigm
e) null hypothesis
3. If a cell can divide
in 25 minutes, how many minutes would it take for the number of cells to
increase by a factor of 32?
a. 30 minutes b. 75 minutes c. 125 minutes d. 150 minutes e. 800
minutes
4. Which of the following is not normally a
part of the soil?
a. mineral particles b.
roots
c. animals
d. fungi
e. ALL of the above are normally in a soil.
5. What is the
scientific name of the carrot?
a) Daucus Carota
b) Daucus carota c)
Zingiber officinale
d) carota e) Carota
6. As a variable, shoe
size, is best described as a:
a. discontinuous qualitative attribute b. discontinuous qualitative
variable
c. continuous
quantitative attribute d.
discontinuous quantitative variable
e. continuous measurable
variable
7. What three steps best
describe the scientific method?
a. Observation, hypothesis, experimentation b. Observation, creating paradigms,
falsification
c. Visualization, estimation, falsification d. Hypothesis, observation,
conclusion
e. Methods, results, discussion
8. Which of the
following best describes the primary structure in
proteins?
a. It is the number of amino acids in the protein.
b. It is the number of peptide bonds in the
protein.
c. It is the sequence of amino acids in the
protein.
d. It is the presence of helices in the protein.
e. It is the relationship of the protein chains to other subunits of the
enzyme.
9. What element/thing is
always part of natural selection, but is not part of evolution of the universe
or evolution of the earth?
a. change
b. sequence
c. reproduction d. fossils
e. dynamics
10. Soybean is a member
of the legume (bean) family. A bacterial symbiont
associated with that family is able to:
a. capture calcium
b. keep the soil basic
c. produce antibiotics
d. repel root worms e. fix nitrogen
11. Which of the following is the correct
order of the stages of a batch culture?
a. Lag, stationary,
exponential, decline
b. Stationary, lag, exponential,
decline
c. Exponential, stationary, lag,
decline
d. Decline, exponential,
stationary, lag
e. Lag, exponential,
stationary, decline
12. Plants pump
nutrients from the soil. Agriculture eventually transports those nutrients into
cities. People in cities use a fraction of the nutrients for growth. Where do
much of the nutrients unused by the city residents end up?
a. groundwater
b. wastewater c. the
air
d. farms e.
concrete
13. An entity that can reproduce inside a
cell but has no metabolism outside of a cell:
a. protista
b. archaea c.
bacteria d.
virus e. fungi
14. A scientific name
for a species includes first the ____ and then the ______.
a. family & genus
b. genus & specific epithet c. specific
epithet & genus
d. species & genus e. a species name has only one
part.
15. The medical
importance of plasmids is:
a. They make antibiotics
b. They may carry antibiotic resistance genes .
c. They move from bacteria to
human cells. d. They are made of single stranded RNA
e. They coat the outside of the cell
16. The word epidemic
means
a. the disease is likely to be fatal. b. a disease can spread from person to
person.
c. is a measure of how many people just got the
disease.
d.
the disease is carried by a vector e. a lot of people have
the disease at the same time.
17. Viral diseases may
be effectively controlled by vaccination. What is typically injected into the
individual being vaccinated?
a.
antibiotics
b. bacteria c.
dead (heat treated) bacteria d.
dead viruses
e. DNA from the virus
18. A virus may infect
a bacteria, replicate and then burst the bacteria open
to release viral particles. That process is known as:
a. contagion b. burstification c.
lysogeny d. lytic cycle e. phage
19. For the exponential model of population
growth, namely Nt =
N0•ert, what would be the
appropriate value of the parameter r if the population size is constant,
i.e. not growing.
a. 0 b. 1 c. e d. B e. 1/t
20. If all the viral
diseases that were ever to be were created at one time, then we might hope to
eliminate viral diseases. Unfortunately, new viral diseases continue to emerge
due to:
a. evolution b. unseptic conditions c. plasmids d. new
species e.
mosquitoes
21. How does quarantine
help reduce the rate of spread of a contagious disease?
a. It prevents the disease from reaching uninfected
individuals.
b. It keeps the individuals from stress, which tends to make the disease
worse.
c. It puts sick individuals in a better climate.
d. It kills the vector.
e. Sick people are more inclined to help sick individuals than are
healthy ones.
22. The order -largest
to finest- of mineral particles in the soil is:
a. silt, sand, clay
b. grit, sand, slime
c. sand, clay, silt
d. sand, silt, slime e. sand, silt,
clay
23. Soils with
heterogeneous sizes of particles are most likely to be:
a. alluvial
b. loess c. lacustrine d. glacial
till
e. dry
24. An annual plant
survives from one growing season (summer) to the next by its:
a. shoots
b. roots
c. seeds
d. woody stems e.
fitness
25. In mammals, what is
the taxonomic category that is one step up (more inclusive) than
family?
a. phylum
b. order
c. class
d. division e.
genus
26. For seed plants, the
individual we see is a _______ which is _______.
a. sporophyte,
diploid b. sporophyte, haploid
c. gametophyte,
haploid
d. gametophyte,
diploid e. visophyte, aneuploid
27-28. From the results observed after mixing lines of ciliates
together shown in the following Table answer questions 27 &
28.
Mix lines together pairwise
Line A
B
C
D
E
F
A -
B +
-
C -
-
-
D -
-
+
-
E -
-
-
+
-
F -
-
+
-
+
-
+ Mating Observed - No mating in
mixture
27. What statement best
describes the relationship of lines A & B.
a. A and B are members of the same species and
have the same mating type.
b. A and B are members of the same species and
have different mating types.
c. A & B are members of different
species.
d. A has the same mating type as C.
e. B has the same mating type as C, D, E &
F.
28. What statement best
describes the relationship of lines A and C.
a. A and C are members of the same species and
have the same mating type.
b. A and C are members of the same species and
have different mating types.
c. A & C are members of different
species.
d. A has the same mating type as C.
e. B has the same mating type as C, D, E &
F.
29. A disease caused by
a protista is:
a. SARS
b. Gonorrhea c.
HIV
d. Chloera e.
malaria
30. The macromolecule
type that can store information and can perform some function and therefore is
the best candidate for the earliest life is:
a. RNA
b. Protein
c. lipid d. DNA
e. carbohydrate
31. A radioactive
element has a half life of 1 billion years. Assuming it has not been made since
the beginning of the earth, what proportion of the original amount would you
expect to find in rock that is as old as the earth?
a. 0.9%
b. 4%
c. 15%
d. 25% e.
40%
32. If the human body is
70% water and the total amount of water entering the body per day is 1 kg
(besides what is drunk this includes water in food), about how long does an
average molecule of water spend in a person weighing 70
kg?
a. 5 days
b. 7 days
c. 50 days d. 70
days e. 1
year
33. Which of the
following is the best 'tree of life' for the following sequences.
Species
A AGTGCCTAAGCCTATCCAT
Species B AGTACCTATGCCTATTCAT
|
|
Species C GGTGCCTAAGCCTATTCAT
a.
b.
c.
d.
e.
|
|
|
|
|
|
|
|
A B C
A C B
B
C A
G A C
C T A
34. Using the 4 letters
(A, C, G & T) of DNA how many different 3 base sequences are
possible?
a. 4
b. 12 c. 16 d. 64 e.
34
35. What type of
macromolecule is the most reduced (and therefore has the most energy per
gram)?
a. nucleic acid
b. lipid c. protein
d. carbohydrate
e. vitamins
36. If a population is growing
exponentially, the per capita growth rate ()N/N•)t)
______.
a.
increases linearly with time b. increases
exponentially with time
c.
is constant
d. is zero
e. decreases linearly as time increases
37. The dewpoint is:
a. the relative humidity
b. the place where cold air tends to sink
c. 10° C below the current temperature d. 10° C above the current
temperature
e. the temperature at which the relative
humidity becomes 100%
38. Net primary
production is a measure of the energy captured per unit area (square meter) of
ecosystems. Even though it is a
measure of energy, the usual units it is measured in are:
a.
Joules
b. grams of biomass c. kilocalories
d. calories
e. force•distance
39. Recently it has been
possible to identify species that have never been cultured. What is the name of
the technique that discovered new species without culturing
them?
a. electron microscope b. stable isotope analysis
c. mass spectrometer
d. direct sequencing
e. gradient analysis
40. A compound, such as
an amino acid, that can both take up and/or release hydrogen ions and thereby
mitigates changes in pH is known as a?
a. acid
b. buffer
c. base d. protein e.
regulator
THE CHOICES MADE BY A
PREVIOUS CLASS ARE GIVEN ON THE NEXT PAGE. THE LAST ENTRY ON EACH ROW IS THE
CORRELATION BETWEEN THE CORRECT ANSWER TO THAT QUESTION AND THE EXAM
TOTAL.
Exam 1A Fall 2005
% choosing each letter
Ques A
B
C
D
E
Correlation
Comment
1.
29 9
3
59
0
0.14
2.
23 17
30 19
10
‑0.05
3. 1
6
41 13
39
0.19
4. 2 7
27 11
53
0.14
5.
1 95
4
0
0
0.03
6.
12 7
24 29
29
0.21
7.
60 1
0
37
2
0.16
8.
13 3
81 1
3
0.20
9.
7
13
57 6
17
0.18
More than 57% needs to understand
10. 12 16
11 8
53
0.55
11. 14
7
21 1
57
0.32
12. 23
65 6
5
1
0.22
13. 7
5
9
79
1
0.34
14. 8
80 4
7
1
0.26
15. 21 46
6
2
25
0.22
16. 3
9 2
7
79
0.16
17. 11
3 20 54
12
0.30
18. 14 6
24 55
2
0.37
19. 54 35
2
3
6
0.32
20. 79 5
5
10
1
0.25
21. 95 0
1
4
0
0.09
22. 14 5
23 3
55
0.27
23. 13 19
11 45
12
0.36
24. 4
44 33
9
10
0.26
25. 9
46 23
2
20
0.24
26. 22 20
28 27
2
0.12
book Question, performance poor.
27. 40 39
18 2
1
0.16
28. 0
0
100
0
0
Q28. shown is corrected, original
defective
29. 12 11
4
24
49
0.26
30. 68 12
0
20
1
0.21
31. 22 36
19 15
8
0.20
32. 13 29
29 28
1
0.34
33. 7
74 16
3
1
0.23
34. 1
7
5
60
27
0.30
35. 4
39 13
43
1
0.33
36. 36 46
14 1
3
‑0.05
37. 27 12
9
1
51
0.27
38. 31 38
11 17
2
0.37
39. 4
8
13 65
10
0.27
40. 6
80 3
5
6
0.30
You may notice that there are quite a few questions about the order of events in time or the order of objects by size. Understanding of patterns and being able to connect apparently separate events/objects is an important part of understanding population biology.
