Name a type of virus that causes cancer and explain how it works

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THE BIOLOGY OF CANCER
Short Answer: Please be concise with your answers and as specific as possible.
1. Genes involved in cell cycle activity/survival are mutated to contribute to the development of cancer. Name the two categories of genes related to cell division that are mutated and how mutations affect their function and lead to cancer.
2. How can active transport activity by cells contribute to cancer?
3. How is it that changes in membrane fluidity can lead to tumor development?
4.What type of standard treatment should be used for metastatic adenocarcinoma? Explain your response.
5. What type of secondary/alternative treatment strategy should be used for treatment against hemangioma? Explain your response.
6. Assume that two individuals (A and B) develop the same type of cancer. Both individuals are given the best treatment found to be effective against cancer. Individual A responds well to treatment, while individual B does not. Using what you have learned, provide a specific type of cancer and an explanation for why there was a difference in response to treatment.
7. Name a type of virus that causes cancer and explain how it works. Include the type of cancer it causes in your response.
8. Genetic instability is the accumulation of DNA mutations, especially in cancer cells. How is genetic instability prevented in healthy cells?
9. Why does it make sense that the majority of cancers are non-hereditary?
10. What genetic profiling method do you think is best in identifying genes related to cancer? Include an explanation of why this method is better than other methods.
11. Which cancer screening method is best? Explain the type of cancer(s) it detects and why it is better than other methods.

Describe these two structures or organelles – what do they look like, what are they composed of?

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BIOLOGY

PLEASE MAKE SURE THIS IS AN ORIGINAL

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Bacterial cells are prokaryotic. Select two structures of bacterial cells and briefly describe them; what do they look like, what are they composed of? Then, explain how these two structures allow bacterial cells to survive as unicellular organisms.
There are many examples of eukaryotic cells. Algae, Fungi, Plants, and Animals are all composed of eukaryotic cells. Some algae and fungi are unicellular organisms, but other algae and fungi, and all plants and animals are multicellular organisms that are composed of specialized eukaryotic cells that interact to support the life of the multicellular organism.
Choose either a plant or an animal cell. Choose two structures or organelles of the cell (not used in part one above.) Describe these two structures or organelles – what do they look like, what are they composed of? Then explain how these plant or animal cell structures or organelles function. How do these functions support activities of the plant or animal cell and enable survival of the multicellular plant or animal organism?
Be sure to state how the structures in the eukaryotic cells ALSO contribute to the life of the entire organism and not just the cell. Listen to the chat for examples of what is meant by this.

What does the term IMViC mean?

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MICROBIOLOGY

Review Sheet Week 7

Exercise 24.1

Questions

  1. What does the term IMViC mean?
  2. Why is the IMViC useful in identifying
  1. Enterobacteriaceae? Are further biochemical tests necessary for complete identification?
  2. What diagnostic test differentiates
  4. ProteusandProvidenciaspecies from otherEnterobacteriaceae?
  5. How is
  7. E. colidistinguished fromP. vulgarison MacConkey agar? On a TSI slant?
  8. Instead of TSI, why would a slant medium containing only dextrose and lactose (not sucrose) be preferable for detecting
  10. Y. enterocolitica?
  11. What procedures, other than biochemical, are used to identify microorganisms?
  12. What is the purpose of the control test run in parallel with bacterial agglutination?
  13. What is the value of serological identification of a microorganism as compared with culture identification?
  14. Describe two mechanisms by which
  16. E. colican produce disease.
  17. What is meant by the term “enteric pathogen”?
  18. Name a bacterial pathogen, other than one of the Enterobacteriaceae, that causes intestinal disease. Provide a flowchart indicating how you would make the laboratory diagnosis.
  19. Why is it important to differentiate glucose nonfermenters from
  21. Enterobacteriaceae?

Page 1 of 1 From
Laboratory Manual & Workbook in Microbiology Applications to Patient Care (9th ed.). By Josephine A. Morello, Helen Eckel Mizer, and Paul A. Granato Copyright Š 2006 The McGraw-Hill Companies, Inc. Reprinted with permission of The McGraw-Hill Companies, Inc.

What approach would you use to isolate only cells that contain this new structure?

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BIOLOGY 101

For each of the SLP assignments, you will be provided with a
hypothetical experimental scenario or data. These assignments are more
opened-ended than the case assignments. You will speculate about
possible explanations and the ways they might be tested, but be sure to
that your hypotheses are grounded in accepted biological science. In
doing this, you will mimic the action of scientists who are continuously
collecting new data, formulating hypotheses, and testing their ideas.
In a newly-explored deep-sea environment, several potentially new
species of apparent bacteria have been discovered. In some of these
single-celled life forms, a novel structure has been observed. The
structure is apparently bound to the interior surface of the cell
membrane and so does not float freely in the cytosol. Preliminary
investigation indicates that this structure typically appears circular
or ovoid in shape. It apparently consists of a long chain of nucleic
acid wrapped around a tube of an unknown protein.
What approach would you use to isolate only cells that contain this
new structure? What techniques could be used to characterize the
structure and composition of the structure? How might you identify the
type of protein and nucleic acid? What would you hypothesize to be the
function of this structure? To what eukaryotic organelle might this
structure be analogous and why?