Microbiology: An Introduction
12th Edition
ISBN: 9780321929150
Author: Gerard J. Tortora, Berdell R. Funke, Christine L. Case
Publisher: PEARSON
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Textbook Question
Chapter 20, Problem 9MCQ
A drug that intercalates into DNA has the following effects. Which one leads to the others?
- a. It disrupts transcription.
- b. It disrupts translation.
- c. It interferes with
DNA replication. - d. It causes mutations.
- e. It alters proteins.
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A.) DNA encodes for the cell genome and is therefore a permanent copy to have a functioning cell.
B.)Different changes to the structure of messenger RNA can cause mutations and genomic instability which could lead to abnormal cells in the body.
a. Statement A is correct
b. Statement B is correct
c. Both A and B are correct
d. Both A and B are incorrect
Which of the following statements about our defenses to protect DNA are correct (select all that apply)?
A.
Genetic differences in GST enzymes may affect risk of cancer
B.
Reactive Oxygens species that damage DNA are removed by catalase
C.
On average, humans are exposed to more naturally occurring plant pesticides compared to man made pesticides.
D.
Cancer cells upregulate concentration of Glutathione S-Transferase (GST) to remove electrophilic compounds
E.
High levels of melanin are correlated with increased risk of skin cancer
Which statement below best describes whether or not there is an advantage of using iPSCs to induce repair of bodily damage within a patient over using embryonic stem cells that have been donated?
a. Because the iPSCs originated from the patient and thus probably will avoid rejection by the patient’s own immune system.
b. Embryonic stem cells are easier to obtain.
c. There are more ethical issues involved in iPSCs.
d. Only embryonic stem cells are vastly renewable.
Chapter 20 Solutions
Microbiology: An Introduction
Ch. 20 - DRAW IT Show where the following antibiotics work:...Ch. 20 - List and explain five criteria used to identify an...Ch. 20 - What similar problems are encountered with...Ch. 20 - Define drug resistance. How is it produced? What...Ch. 20 - List the advantages of using two chemotherapeutic...Ch. 20 - Why does a cell die from the following...Ch. 20 - How does each of the following inhibit...Ch. 20 - The OH is missing from carbon 39 in ddI. How does...Ch. 20 - Compare the method of action of the following...Ch. 20 - NAME IT This microorganism is not susceptible to...
Ch. 20 - Which of the following pairs is mismatched? a....Ch. 20 - Prob. 2MCQCh. 20 - Prob. 3MCQCh. 20 - An antimicrobial agent should meet all of the...Ch. 20 - The most selective antimicrobial activity would be...Ch. 20 - Prob. 6MCQCh. 20 - Which of the following will not affect eukaryotic...Ch. 20 - Cell membrane damage causes death because a. the...Ch. 20 - A drug that intercalates into DNA has the...Ch. 20 - Chloramphenicol binds to the 50S portion of a...Ch. 20 - Prob. 1ACh. 20 - Why is idoxuridine effective if host cells also...Ch. 20 - Some bacteria become resistant to tetracycline...Ch. 20 - The following data were obtained from a...Ch. 20 - Prob. 5ACh. 20 - The following results were obtained from a broth...Ch. 20 - Vancomycin-resistant Enterococcus faecalis was...Ch. 20 - Prob. 2CAECh. 20 - Prob. 3CAE
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USMLE-Rx Antimicrobial Therapy; Author: USMLE-Rx;https://www.youtube.com/watch?v=Pka1Ynlrqtw;License: Standard Youtube License