Part 1 of 8 - 16.65/ 16.65 Points
Question 1 of 30 3.33/ 3.33 Points
An organism that has more or less than the normal number of chromosomes is called:
A. Genoploid
B. Phenoploid
C. Haploid
D. Karyoploid
E. Aneuploid
Answer Key: E
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Question 2 of 30 3.33/ 3.33 Points
During which stage do homologous chromosomes move away from each other?
A. Metaphase I
B. Prophase
C. Anaphase II
D. Metaphase II
E. Anaphase I
Answer Key: E
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Question 3 of 30 3.33/ 3.33 Points
Which sequence in the cell cycle is correct?
A. Metaphase, anaphase, prophase, telophase
B. Prophase, metaphase, anaphase, telophase
C. Anaphase, interphase, telophase, prophase
D. Prophase, metaphase, interphase, telophase
E. Interphase, metaphase, prophase, anaphase
Answer Key: B
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Question 4 of 30 3.33/ 3.33 Points
A biologist is studying programmed cell death due to DNA damage which cannot be repaired. Based on this information, what would the biologist be studying?
A. Cytokinesis
B. Nondisjunction
C. Apoptosis
D. Angiogenesis
E. Metastasis
Answer Key: C
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Question 5 of 30 3.33/ 3.33 Points
What is the proper order of events in the cell cycle?
A. M, G1, G2, S
B. G1, S, G2, M
C. G1, M, G2, S
D. G1, G2, M, S
E. G1, G2, S, M
Answer Key: B
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Part 2 of 8 - 13.32/ 16.65 Points
Question 6 of 30 3.33/ 3.33 Points
If you were studying the lytic cycle of viral reproduction, which stage would not be included in your studies?
A. Biosynthesis
B. Integration
C. Maturation
D. Penetration
E. Attachment
Answer Key: B
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Question 7 of 30 3.33/ 3.33 Points
The innermost core of a virus's structure is made up of
A. a protein capsid.
B. a membrane envelope.
C. a protein spore coat.
D. either DNA or RNA.
E. both DNA and RNA.
Answer Key: D
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Question 8 of 30 3.33/ 3.33 Points
Which of the following is false about viruses which infect plants?
A. The symptoms of plants infected with a virus include stunted growth and a discoloration of leaves.
B. There are approximately 2,000 plant diseases attributed to viruses.
C. Plant viruses can be spread via insects and nematodes.
D. Plant viruses often kill the host plant outright.
E. Plant viruses can be spread by contaminated soil or pollen.
Answer Key: D
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Question 9 of 30 3.33/ 3.33 Points
If you were studying different diseases which are caused by viruses, which of the following would you not be interested in studying?
A. Polio
B. AIDS
C. Smallpox
D. Cervical cancer
E. Chlamydia
Answer Key: E
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Question 10 of 30 3.33/ 3.33 Points
If you were writing a paper on Wachtershaüser and Huber's hypothesis on how the first cells arose, your paper would highlight which of the following hypotheses?
A. The lysogenic hypothesis.
B. The iron-sulfur world hypothesis.
C. The virus first hypothesis.
D. The prebiotic soup hypothesis.
E. The facultative anaerobe hypothesis.
Answer Key: B
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Part 3 of 8 - 16.65/ 16.65 Points
Question 11 of 30 3.33/ 3.33 Points
If you were studying euglenoids, you would most likely find them
A. in the soil.
B. in freshwater ecosystems.
C. in deep saltwater ecosystems.
D. in shallow saltwater ecosystems.
E. living within animals.
Answer Key: B
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Question 12 of 30 3.33/ 3.33 Points
A biologist is studying protists that have a calcium carbonate shell with holes so pseudopods can extend outward. Based on this information you would conclude that he or she is studying which of the following?
A. Diatoms
B. Radiolarians
C. Foraminiferans
D. Apicomplexans
E. Amoeboids
Answer Key: C
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Question 13 of 30 3.33/ 3.33 Points
Which of the following terms would not be associated with the trypanosomes?
A. Heterotrophic
B. Autotrophic
C. Unicellular
D. Flagella
E. Parasite
Answer Key: B
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Question 14 of 30 3.33/ 3.33 Points
The valves of a diatom are made of silica.
True
False
Answer Key: True
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Question 15 of 30 3.33/ 3.33 Points
A biologist is doing research on African sleeping sickness. Based on this information, you would conclude that he or she is studying which of the following?
A. Trypanosoma
B. Trichchomonas
C. Giardia
D. Euglena
E. Paramecium
Answer Key: A
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Part 4 of 8 - 16.65/ 16.65 Points
Question 16 of 30 3.33/ 3.33 Points
A plant physiologist is studying the characteristics of gymnosperms and angiosperms. Based on her studies she has determined that they both have which feature in common?
A. Seeds are surrounded by a fruit at maturity
B. Pollen is carried by animal pollinators
C. Seeds develop within a flower
D. Pollen is carried by the wind for pollination
E. Seeds develop within a cone
Answer Key: D
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Question 17 of 30 3.33/ 3.33 Points
The seeds of gymnosperms are mostly spread by
A. birds.
B. insects.
C. water.
D. mammals.
E. wind.
Answer Key: E
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Question 18 of 30 3.33/ 3.33 Points
Which of the following is not part of the female flower?
A. The style
B. The ovary
C. The anther
D. The stigma
E. The carpel
Answer Key: C
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Question 19 of 30 3.33/ 3.33 Points
If you were studying the most recent of the six major innovations plants experienced during their evolutionary history, you would be studying
A. vascular tissue.
B. apical growth.
C. embryonic protection.
D. seeds.
E. fruits.
Answer Key: E
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Question 20 of 30 3.33/ 3.33 Points
In a fern, the spores are produced through the process of mitosis.
True
False
Answer Key: False
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Part 5 of 8 - 6.66/ 6.66 Points
Question 21 of 30 3.33/ 3.33 Points
In order to calculate the proportion of cells at rest, you were required to:
A. divide the number of cells in prophase by the total number of cells and multiply by 100
B. divide the number of cells in interphase by the total number of cells and multiply by 100
C. subtract the number of cells in telophase from the number in interphase
D. divide the total number of cells in metaphase and anaphase by the total number of cells and multiply by 100
Answer Key: B
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Question 22 of 30 3.33/ 3.33 Points
Prepared slides of _________ tissue were compared to _________ tissue.
A. adipose, nervous
B. fresh, processed
C. human, mouse
D. normal, cancerous
Answer Key: D
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Part 6 of 8 - 6.66/ 9.99 Points
Question 23 of 30 3.33/ 3.33 Points
In which phase of mitosis do centromeres split and chromosomes move toward opposite sides of the cell?
A. Metaphase
B. Telophase
C. Anaphase
D. Prophase
Answer Key: C
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Question 24 of 30 3.33/ 3.33 Points
During which phase of mitosis do sister chromatids separate and become separate chromosomes?
A. Metaphase
B. Telophase
C. Prophase
D. Anaphase
Answer Key: D
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Question 25 of 30 3.33/ 3.33 Points
Chromosomes are visible under the microscope as threadlike structures in cells of what phase of mitosis?
A. Prophase
B. Interphase
C. Anaphase
D. Telophase
Answer Key: B
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Part 7 of 8 - 9.99/ 9.99 Points
Question 26 of 30 3.33/ 3.33 Points
The cancerous tissues ranked by mitotic index in order from lowest to highest are:
A. Ovary, stomach, lung
B. Stomach, lung, ovary
C. Lung, stomach, ovary
D. Ovary, lung, stomach
Answer Key: C
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Question 27 of 30 3.33/ 3.33 Points
How did the mitotic index of cancerous cells compare to that of normal cells for all three tissues?
A. The mitotic index was lower in cancer cells
B. The mitotic index was in both cell types was equal
C. The mitotic index was higher in cancer cells
Answer Key: C
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Question 28 of 30 3.33/ 3.33 Points
Cancerous cells have unregulated cell division which is reflected in which of the following?
A. They have Mitotic Indexes that vary little from normal cells
B. Cancerous cells’ Mitotic Indexes are smaller than normal cells.
C. The cancerous cells divide more slowly than normal cells.
D. They have higher Mitotic Indexes
Answer Key: D
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Part 8 of 8 - 6.0/ 6.66 Points
Question 29 of 30 / 3.33 Points
List and explain two risk factors for ovarian cancer.
Model Short Answer: 1. Risk increases with age.
2. Women who have not had children are at a greater risk than women who have had children.
3. Women who have had breast cancer are at a greater risk.
4. Women who have a family history of ovarian cancer are at greater risk.
5. Certain rare genetic disorders are associated with greater risk.
Question 30 of 30 / 3.33 Points
If you were to analyze a sample of cancerous brain tissue and noncancerous brain tissue, what predictions could you make about their respective mitotic indices and why?
Model Short Answer: Because cancerous tissues in general divide more rapidly than their normal counterparts, we could predict that the cancerous brain tissue would have a higher mitotic index than the normal brain tissue.
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