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Integrative Biology
100 and 101
Sample Exam Questions, Spring 2010
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These exam questions were used on hour exams during
previous
semesters. Use this as a study guide for the STYLE (NOT CONTENT) of
questions you can expect on this semester's exams. DO NOT use this as
your exclusive study tool. Emphasis of the lectures and learner
objectives may be different this semester.
These questions address the topics on the first 20
lectures. Questions dealing with evolution are not included in
this sample.
Each question will be keyed to a specific lecture and
objective,
for example, "Lecture 1, Objective 2".
Answers to these questions will NOT
be posted.
Lecture 1, Objective 2
1. Leafy sea dragons have leaf-like appendages that mimic the
fronds
of the sea kelp beds in which they inhabit. This inherited
characteristic enables the delicate sea dragon to evade capture by its
enemies. The evolution of these leafy appendages is an example of which
of the characteristics of life?
a. organization
b. adaptation
c. growth and development
d. maintenance of internal constancy
e. irritibility, or reacting to environmental change
Lecture 1, Objective 2
2. One of these is NOT a requirement of living things. Choose
that
trait.
a. organization
b. ability to think
c. maintenance of internal constancy
d. response to the environment
e. energy
Lecture 1, Objective 4
3. What is a theory in biology?
a. an opinion or educated guess
b. proof that a hypothesis is true
c. the outcome of an experiment
d. a hypothetical set of facts
e. a hypothesis that has been supported by many experiments and/or
observations
Lecture 1, Objective 3
4. Which of the following is formulated as a hypothesis to
explain
why the different sexes of a ringed pheasant look different?
a. The drab coloration of the female pheasant allows it to
be
camouflaged in its natural habitat
b. Painting a female pheasant bright red will draw attention to it.
c. Male pheasants, painted a drab color, were ignored by the females
during mating season.
d. In an experiment, it was found that male pheasants were attracted to
the drab-colored female pheasants.
e. If female pheasants were more brightly colored, then they will be
"sitting ducks," especially during the hunting season.
Lecture 2, Objective 3
5. What are the two primary environmental factors determining
the
distribution of biomes in different regions of our planet?
a. latitude and elevation
b. temperature and precipitation
c. the tilt of the Earth and relative distance from the sun
d. global air circulation and ocean currents
e. El Niño and global warming
Lecture 2, Objective 3
6. "Seasons" on the planet Mars are characterized by
variation in the size of its polar ice cap and the severity of its dust
storms over the course of the Martian year. What causes these
"seasons" of Mars?
a. topographical differences, such as its great channels and
tall
volcanoes
b. gravitational forces from other bodies in the solar system
c. rising and falling air masses
d. its relative distance from the Sun at different times of the Martian
year
e. the tilt of the planet and relative changes in the angle of
incidence
of sunlight
Lecture 2, Objective 2
7. Why can many different species coexist in an ecosystem when
they
are competing for limited resources?
a. each species is found in a different biome
b. each species occurs in a slightly different habitat
c. each species occupies a different niche
d. each species comprises a different population
e. resources are shared among all species
Lecture 2, Objective 1
8. Which of the following is NOT an ecosystem or a definition
of
one?
a. the planet Earth
b. all the organisms, sometimes hundreds of species, in a given area
c. a leaf that has fallen to the ground
d. a tropical rainforest
e. the kelp beds of southern Australia, home of the sea dragon
Lecture 2, Objective 3
9. Many major deserts of the world are situated around 30
degrees N
and S latitude. The aridity of these regions can be best explained
by:
a. the water-conserving adaptations of desert plants and
animals
b. the absence of pioneer species
c. sea surface temperatures and global ocean currents
d. their high relative humidity
e. the dry air masses over these regions are falling, increasing in
temperature, and sucking all the moisture out of the ground
Lecture 3, Objective 4
10. The transition of your neighbor’s lawn from a uniform lawn
of grass to one that is now crowded with tall weeds, tree saplings, and
small shrubs is called:
a. primary succession
b. secondary succession
c. invasive succession
d. disclimax
e. transitional succession
Lecture 3, Objective 4
11. Returning to your neighborhood some 100 years from now,
you see a mature oak-hickory forest.
You are told that if this forest is not disturbed, it will remain
fairly
constant in species composition for ever. How would you describe the
ecological status of this land?
a. disclimax community
b. climax community
c. pioneer community
d. primary successional community
e. invasive species community
Lecture 3, Objective 5
12. Shortly after visiting your old neighborhood, the weather
deteriorates and a freak tornado scours the area, effectively removing
the vegetation. How will pioneer species alter the nonliving components
of this ecosystem during the early stages of succession?
a. they prevent later successional species from establishing
themselves
b. they maintain the community in a recurring state of disclimax
c. they convert existing organic matter to mineral substrate
d. they reduce light intensity and temperature and add organic matter
to
the soil
e. they permit as much sunlight (energy) as possible to reach the
ground
Lecture 3, Objective 2
13. Species that are non-native to a particular ecosystem and
whose
introduction has caused economic or environmental harm are called
what?
a. pioneer species
b. disclimax species
c. invasive species
d. secondary species
e. successional species
Lecture 3, Objective 6
14. John Deere and his self-scouring steel-bladed plow, and
all
others who used this implement, were able to convert tallgrass prairie
into agricultural land. The maintenance of this land by repeated
plowing, sowing, and raising crops is an artifical form of maintaining
what?
a. a disclimax commnity
b. a climax community
c. a biological community
d. a pioneer community
e. all of the above
Lecture 4, Objective 4
15. Which factor would cause the change in the growth rate of
the
population from time 1 to time 2?
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a. intrinsic growth factors
b. density dependent factors
c. generation time
d. biotic potential
e. genetic make up of the species
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Lecture 3, Objective 3
16. In the portion of the poem below, how would the birds,
snakes,
and wolves be classified in terms of biological population
terminology?
Thousands of chipmunks scurrying about
But soon their exponential future would be in doubt
For the birds and the snakes and wolves got the hunch
That chipmunks make a delectable lunch
Charles Sokoloff (former Bio 100 student)
a. as factors determining the intrinsic rate of increase of
the
chipmunk population
b. as density independent factors for the chipmunk population
c. as density dependent factors for the chipmunk population
d. as exponential growth factors for the chipmunk population
e. as members of the chipmunk population
Lecture 4, Objective 3
17. The actual growth rate of a population is calculated by
____________.
a. adding up all the environmental resistance factors
b. subtracting the death plus emigration rates from the birth plus
immigration rates
c. subtracting the death rate from the generation time
d. birth rate alone
e. multiplying the generation time by the birth rate
Lecture 4, Objective 1
18. Which group of organisms is a population?
a. all the plants in the U of I experimental prairie
b. all the trees in Urbana
c. all the Canadian geese (a species of bird) living in the pond next
to
Menard's building supply store.
d. all the insects living under the grass of the quad
e. all the pets in Champaign
Lecture 5, Objective 3
19. The cellular process of ___1___ requires chemical energy
produced
by ____2___ .
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1
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2
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a. photosynthesis
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respiration
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b. net primary production
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decomposition
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c. decomposition
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photosynthesis
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d. biosynthesis
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respiration
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e. photosynthesis
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decomposition
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Lecture 5, Objective 5
20. Over a plant's lifetime ____1____ of the energy converted
from
sunlight to the energy of sugar is lost as ____2____.
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1
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2
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a. 10%
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water
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b. 90%
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heat
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c. all
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oxygen
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d. 10%
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carbon dioxide
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e. 1%
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simple carbohydrates
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Lecture 5, Objective 4
21. Energy is said to flow through the ecosystem
rather than
cycle because it:
a. is passed from one trophic level to the next.
b. is destroyed by each organism as it is used.
c. never returns to be re-used by the autotrophs.
d. increases in supply as it moves up the food chain.
e. is returned to the soil to be absorbed by plants.
Lecture 5, Objective 2
22. A phosphorus atom that is part of a molecule of DNA in an
animal
can be made available to a plant by the process of:
Lecture 6, Objectives 1 and 2
23. Which organelle is involved in the energy production of a prokaryotic
cell?
Lecture 6, Objective 3
24. A membrane protein in a plant root works in conjunction
with ATP
to transport phosphate ions from a weak fertilizer solution in the soil
water and concentrates them in the cell's cytoplasm. This process is
called:
a. passive transport
b. hormone reception
c. active transport
d. exocytosis
e. facilitated diffusion
Lecture 6, Objective 4
25. The spindle fibers that move chromosomes apart during
mitosis are
made of proteins. The information needed to construct this critical
protein is passed from one generation of cells to the next as:
Lecture 6, Objective 4
26. Where does the assembly of amino acids to produce the CCK
peptide
hormone occur?
Lecture 6, Objective 3
27. Which of the features below would be found in the
membranes of
all cells and organelles?
a. CCK hormone receptors
b. photosynthetic pigments
c. HIV virus receptor proteins
d. phospholipid bilayer
e. electron transport proteins
Lecture 7, Objective 2
28. The light dependent reactions of photosynthesis occur in
the:
a. thylakoid membranes
b. stroma
c. mitochondrion
d. golgi bodies<
e. outer surface of the chloroplast
Lecture 7, Objective 3 & 4
29. Energy, which originated as light, is transported from the
light
dependent reactions of photosynthesis to the Calvin cycle in the form
of:
Lecture 7, Objective 6
30. When plants do not receive enough water their
photosynthetic rate
drops significantly. This is because:
a. water is a raw material needed for the light dependent
reactions.
b. the stomates close and carbon dioxide is not available.
c. sugar builds up and inhibits photosynthesis.
d. not enough oxygen is produced to keep glycolysis running.
e. water provides the carbon atoms used to make sugar.
Lecture 7, Objective 7
31. The sugar produced by photosynthesis is used:
a. to produce biomass.
b. to produce ATP in respiration.
c. as raw material for biosynthesis.
d. to make new DNA.
e. for all of the above
Lecture 8, Objectives 1 & 7
32. Plant seeds germinated in complete darkness will continue
to
loose biomass and eventually die. The loss of biomass occurs in the
form of ________ that is lost from the plants.
Lecture 8, Objective 5
33. During the process of respiration CO2 is produced by
_____1_____
and oxygen is used during _____2_____ .
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1
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2
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a. the Calvin cycle
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glycolysis
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b. the Krebs cycle
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the electron transport
chain
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c. glycolysis
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the Krebs cycle
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d. the light dependent reactions
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glycolysis
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e. the electron transport chain
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the light
dependent reactions
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Lecture 8, Objectives 3 & 10
34. Which part of aerobic respiration produces the greatest
amount of
ATP?
a. the electron transport chain
b. the Krebs cycle
c. glycolysis
d. alcoholic fermentation
e. lactic acid fermentation
Lecture 8, Objectives 3 & 4
35. Krebs cycle produces _________ that transports electrons
to the
electron transport chain.
Lecture 9, Objective 1
36. Sister chromatids are produced by the process of
_____1_____
during the ___2___ phase of the cell cycle.
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1
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2
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a. mitosis
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G1
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b. DNA replication
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S
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c. catabolism
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G2
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d. protein synthesis
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meta
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e. decomposition
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apoptosis
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Lecture 9, Objective 4
37. The ends of chromosomes that act as a "cellular clock"
that
control the number of times cell can divide are called:
Lecture 9, Objective 2
38. Mitosis produces:
a. two cells that are genetically different
b. gametes
c. one cell that is genetically different from the original cell
d. four cells that are genetically different
e. two cells that are genetically identical
Lecture 9, Objective 3
39. The function of a stem cell is to:
a. secrete digestive proteins
b. undergo apoptosis
c. divide
d. remain in the G1 phase
e. produce hormones
Lecture 9, Objective 1
40. DNA replication is described as semi-conservative because:
a. half of the DNA is replicated in each cell cycle.
b. each new DNA molecule contains half of the original molecule.
c. half of the DNA molecule is destroyed during replication.
d. DNA replication occurs on the right side of the cell in about half
of
all cell divisions.
e. there really is no good reason to call it that. That is just its
name.
Lecture 10, Objective 3
41. The drawing below shows the alignment of chromosomes during:
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a. the division of a skin cell
b. the first division of a fertilized egg
c. the first division of meiosis
d. cell division by mitosis
e. the second division of meiosis
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Lecture 10, Objective 2
42. The two structures circled in the diagram below represent:
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a. a pair of homologous chromosomes
b. two identical DNA molecules
c. two alleles
d. two gene loci
e. a pair of gametes
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Lecture 10, Objectives 4, 5, 6, 8, & 9
43. A cell division occurs in a human being. The resulting cells
contain 23 unduplicated chromosomes. This is a description of ____1___
cells formed by the process of ____2_____.
| 1 |
2 |
| a. body DNA |
Replication |
| b. egg |
mitosis |
| c. zygote |
meiosis |
| d. sperm |
meiosis |
| e. homologous |
crossing over |
Lecture 10, Objective 3
44.Shania Twain produced a two-disk set of original songs. One disk is
a collection of nineteen songs, performed in a country style. The other
disk includes the same nineteen songs in the same order, but performed
in a "pop" style. If we think of music CDs as being analogous to
chromosomes, these two disks would be analogous to ____________________
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a. sister chromatids
b. exact copies of the same DNA segment
c. different numbered chromosomes
d. homologous chromosomes
e. homozygous genotypes
Lecture 11, Objective 2
45.The four types of sperm cells illustrated below are produced by the
process of:
Lecture 11, Objective 5
46. A man who is homozygous dominant for sickle cell anemia, an
autosomal
recessive disease, has a child with a woman
who is a carrier for the disease. What is the chance that their
first
child will be healthy?
Lecture 11. Objective 6
47. A couple have had two children. One of the children is afflicted by
cystic fibrosis, an autosomal recessive disease. The other
child
is normal. What are the most likely genotypes for the parents?
a. Both are homozygous dominant.
b. Both are homozygous recessive.
c. One is homozygous dominant and the other is homozygous recessive.
d. One is homozygous dominant and the other is heterozygous.
e. One is heterozygous and the other is homozygous recessive.
Lecture 11. Objective 5
48. A couple is planning to have a child. The man is homozygous
recessive for Huntington disease, an autosomal dominant
disorder.
The woman is also homozygous recessive for the disease. What is the
chance that their first child will inherit the disease?
Lecture 12, Objective 1
49. Meiosis of a cell containing the chromosomes illustrated below
would most likely produce a sperm cell with the genetic
makeup:
a. AaGgBb
b. AgB
c. AGBb
d. AGb
e. AG |
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Lecture 12, Objective 5
50. Hemophilia A is a recessive, sex-linked (on the X
chromosome) disease. A man who does not have the disease is
having a child with a woman who is a carrier. Through prenatal testing,
they discover they are having a boy. What are the chances the boy will
suffer from hemophilia A?
a. 0%
b. 5%
c. 50%
d. 75%
e. 100%
(Hint: You don't have to worry about girls because we know
the child
is a boy.)
Lecture 12, Objective 6 & 7
51. People with Kleinfelter syndrome have 47 chromosomes, including
three sex chromosomes (XXY). What is the term used to describe the
mistake that occurs during meiosis that results in this abnormal
chromosome number?
a. crossing over
b. nondisjunction
c. independent assortment
d. pairing of homologous chromosomes
e. DNA replication
Lecture 13, Objective 1
52. A specific place on a particular chromosome where you would find a
segment of DNA that codes for the production of a protein associated
with the expression of a characteristic, for instance cystic fibrosis,
would be called a/an:
Lecture 13, Objective 1
53. In humans, the nucleus of a body cell that is stuck in G1 has how
many molecules of DNA?
Lecture 13, Objectives 1 & 2
54. Different alleles of a specific gene:
a. are located on the same chromatid.
b. are identical in nucleotide sequence.
c. may produce proteins with varying abilities to function.
d. are found at different places on sister chromatids.
e. all of the above
Lecture 13, Objectives 2 & 3
55. What is a gene?
a. all the genetic material that’s exchanged between
homologous
chromosomes during meiosis
b. all the DNA in a nucleus of an eukaryotic cell
c. a continuous strand of DNA comprising one-half of a replicated
chromosome
d. a sequence of DNA that specifies the sequence of amino acids of a
particular polypeptide
e. pants made of denim cloth
Lecture 14, Objectives 1 & 3
56. The process by which proteins are assembled in the cytoplasm is
called what?
Lecture 14, Objective 3
57. DNA holds the code for which of the following molecules?
Lecture 14, Objective 3
58. Which RNA molecule is small and has a very specific secondary and
tertiary structure so that it can bind an amino acid at one end and
messenger RNA at the other?
Lecture 14, Objective 3
59. During the process of transcription, a sequence of RNA is generated
in which the RNA base cytosine (C) is inserted complementary to the DNA
base guanine (G). Which RNA base is inserted complementary to the DNA
base thymine (T)?
Lecture 14, Objective 1
60. Which answer best describes RNA processing?
a. the process by which RNA is assembled from a DNA template
b. the attraction of a binding protein and other transcription factors
to tell the RNA polymerase where to bind and begin making RNA
c. the removal of introns from mRNA
d. the stepwise addition of amino acids to a growing polypeptide
chain
e. the folding of a polypeptide chain into a specific three-dimensional
structure
Lecture 15, Objectives 2 & 6
61. The defective protein causing sickle cell anemia is caused by the
substitution of one nucleotide in the gene HBB on chromosome
number 11, resulting in the change of the amino acid glutamic acid to
valine. This is an example of what kind of mutation?
Lecture 15, Objectives 2 & 6
62. A mutation that results in the deletion of a single nucleotide pair
from the coding region of a gene might:
a. have a different sequence of amino acids from the point
of the
mutation onward.
b. result in a "garbage gene," as the entire amino acid
sequence after the mutation may be devastated.
c. result in a protein shorter than that produced without the
mutation.
d. result in a protein longer than that produced without the
mutation.
e. all of the above
Lecture 15, Objectives 1 & 5
63. How do new alleles arise in a population?
a. sexual reproduction
b. mutations of pre-existing alleles
c. meiosis
d. protein synthesis
e. the fusion of egg and sperm cells
Lecture 16, Objective 1
64. In the illustration below the "proteins needed for RNA polymerase
to
initiate transcription" are:
Lecture 16, Objective 3
65. Cells can detect signal molecules, like estrogen, from outside the
cell because they have __________ which bind to the estrogen
molecules.
a. ribosomes
b. RNA coding regions of genes
c. restriction enzymes
d. hormone receptor proteins
e. transfer RNA molecules
Lecture 16, Objectives 2 & 3
66. Shrubs that bloom in the early spring have receptors in their cells
that are sensitive to the changing lengths of the night and day period
in the spring. The light-activated receptors interact with the promoter
regions of the genes that control flowering. This developmental
response to a changing environmental factor is an example of which
fundamental quality shared by all living organisms?
a. Life is organized
b. Living things must maintain an internal constancy
c. Living things react to environmental change
d. Living things grow, develop, and reproduce
e. Living things adapt
Lecture 16, Objective. 2
67. HIV, the virus that causes AIDS, infects only cells with the CD4
receptor protein in their outer cell membranes. Why do some cells in
the
human body have the CD4 protein while others do not?
a. Cells with CD4 protein have mutated.
b. The CD4 gene is missing from most cells.
c. The CD4 gene is active only in certain cells.
d. Some cells are haploid and some are diploid.
e. Cells with CD4 proteins are aneuploid.
Lecture 17. Objective 6
68. Strategies for the treatment of various types of cancer involve:
a. preventing the reconstruction of telomeres.
b. removing the source of hormones that stimulate tumor growth.
c. preventing the development of blood vessels to tumors.
d. blocking cell division with chemicals.
e. all of the above.
Lecture 17. Objective 5
69. Retinoblastoma is a cancer of the retina of the eye. Two recessive
alleles for a tumor suppressor gene are required in a cell of the
retina
for a tumor to develop. A person who inherits one recessive allele
________________ risk of developing the disease as/than someone who is
homozygous dominant for the gene at birth.
Lecture 17, Objective 1 & 2
70. Normally, cells lose a bit of the tips of their
chromosomes each
time they go through a cell cycle. When the tips of the chromosomes
degrade too much the DNA can no longer be replicated and the cell can
no
longer divide. Cancer cells avoid this problem and continue to divide
indefinitely by producing:
Lecture 17, Objective 3
71. Cancer can be the result of changes in the genes that control cell
division in the cells in a person’s body. What can produce these
genetic changes?
a. a copy mistake during DNA replication
b. ultraviolet light
c. carcinogenic chemicals
d. chromosome damage during mitosis
e. all of the above
Lecture 18, Objective 7
72. A molecular genetics lab is given a tooth from the skull of a man
suspected to be the Czar of Russia and is asked to prepare a sample of
a
small portion of the Y chromosome from the DNA that is, hopefully
preserved in the central tissue of the tooth. Which technique would the
scientists use to produce millions of copies of this specific segment
of
DNA?
a. recombinant DNA<
b. Polymerase Chain Reaction (PCR)
c. gel electrophoresis
d. Sanger method of DNA sequencing
e. DNA microarrays
Lecture 18, Objective 6
73. Many biotechnology companies work with recombinant DNA plasmids
with
the goal of producing large quantities of a particular human protein.
Once a human gene has been recombined with a bacterial plasmid what
must
be done to get the human protein produced?
a. Cut the recombinant plasmid with restriction enzymes.
b. Put the recombinant plasmid into bacterial cells.
c. Sequence the recombinant gene.
d. Separate the human DNA from the plasmid DNA using electrophoresis
e. Make many copies of the gene using PCR.
Lecture 18, Objective 1 & 2
74. "Cc", the cat, was cloned this past year by combining:
a. two unfertilized cat egg cells.
b. a cat egg cell with a cat sperm cell.
c. a cat diploid body cell with a cat egg cell from which the nucleus
was removed.
d. two cat sperm cells.
e. skin cells from two different cats.
Lecture 19, Objective 1
75. A blood sample from an individual will produce a unique DNA
fingerprint, also called a DNA profile. This is because each
individual has a unique set of:
a. mutations in his/her DNA
b. proteins in his/her cells
c. RNA in his/her nuclei
d. enzymes in his/her mitochondria
e. amino acids in his/her blood
Lecture 19, Objective 1
76. The graphic below illustrates:
a. a method of sorting DNA fragments by length.
b. micro array or gene chip technology.
c. gene therapy.
d. a method of producing recombinant DNA plasmids.
e. a method of producing many copies of a segment of DNA.
Lecture 19. Objective 7
77. DNA from spores that are suspected to be the bacterium that causes
anthrax is being tested using small, flat pieces of glass or silicon
containing thousands of tiny spots of unique sequences of DNA from
known
viruses. Matching DNA from a spore sample sticks to the corresponding
anthrax DNA spots on the piece of glass or silicon and shows up as
glowing spots when illuminated with a laser. This tool is called
Lecture 20, Objective 2
78. Sequencing of a 5 base-long segment of DNA using the Sanger method
produced the set of DNA fragments listed below. Each fragment ends with
the fluorescent dideoxynucleotide indicated by the letters A, C, G, or
T. Construct the sequence of this complementary strand and determine
the
sequence of the ORIGINAL DNA molecule.
| Choose the Original DNA Sequence
a. A-T-C-A-G
b. U-A-G-U-C
c. T-A-G-T-C
d. A-U-C-A-G
e. C-T-G-A-A
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Complementary DNA Fragments produced
during sequencing:
O-O-C
O-O-O-O-G
O-T
O-O-O-A
A
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Lecture 20. Objective 1
79. The human genome project was undertaken to:
a. cure all genetic diseases by the year 2003
b. sequence the 3 billion base pairs in all 22 types of human autosomes
and the X and Y chromosomes
c. develop germline gene therapy strategies
d. replace human chromosomes with artificial chromosomes
e. create genetically perfect humans
Lecture 10, Objective 4
80. Gene therapy is a biotechnology method that attempts to:
a. sequence a person's genes.
b. replace a person's mutated genes with good genes.
c. produce a DNA fingerprint to identify a person.
d. make millions of copies of a segment of a person's DNA.
e. clone human beings.
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