201 Exam 2 Key - Name: _ Class: _ Date: _ ID: Green Version...

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
Name: ______________________ Class: _________________ Date: _________ ID: Green Version 1 Micro 201: Exam 2 S2008 True/False Indicate whether the statement is true (A) or false (B). ____ 1. The methods of antiseptic surgery were first developed by an English physician, Joseph Lister. ____ 2. An immunoglobulin is an antigen. ____ 3. Receptors for pathogen-associated molecular patterns are found on the surface of macrophages. . ____ 4. The acid environment in the stomach is an important component of our first line of defense against pathogenic microbes. ____ 5. Food irradiation can be used to sterilize food products, but may leave them radioactive. ____ 6. Although boiling will not sterilize water it will effectively eliminate waterborne pathogens. ____ 7. A self-transmissible plasmid is a plasmid that contains one or more transposons. ____ 8. Most mutations are harmful to an organism. ____ 9. A patient with an elevated level of eosinophils might be expected to be fighting an infection caused by parasitic worms or fungi. ____ 10. A gene which is constitutively expressed is always producing its mRNA. ____ 11. T-helper cells mature in the thymus. Multiple Choice Identify the choice that best completes the statement or answers the question. ____ 12. During the stationary phase of growth: a. cells are adapting to their environment and getting larger. b. cell populations are increasing. c. cells are being transformed into endospores. d. cells are undergoing lysis due to viral infection. e. cells are dying as fast as new ones are being produced.
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
ID: Green Version 2 ____ 13. In the graph shown above, the amount of IgG produced during the secondary response is very great. This is because: a. the antigen that elicited the secondary response must have been a protein rather than a carbohydrate. b. a weakened pathogen strain caused the primary response and a more virulent strain caused the secondary response. c. the antibodies produced in the primary response were smaller than the antibodies produced in the secondary response. d. the T cell-independent antigen caused the primary response and a T cell-dependent antigen caused the secondary response. e. none of the above. ____ 14. The anticodon for mRNA UGC is: a. AGC. b. ACG. c. TGC. d. TCG. e. UGC. ____ 15. In a eukaryotic organism, crossing-over: a. results in increased genetic recombination. b. occurs during meiosis. c. involves exchange of DNA between homologous chromosomes. d. does not occur during asexual reproduction. e. all of the above. ____ 16. Messenger RNA is formed by ________________ of a gene on the DNA template strand. a. transcription b. translation c. replication d. transformation e. transposition ____ 17. The first virus to be isolated in pure form was: a. polio virus. b.
Background image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

This test prep was uploaded on 04/06/2008 for the course MICROBIOLO 201 taught by Professor Edwardbraun during the Spring '07 term at Iowa State.

Page1 / 10

201 Exam 2 Key - Name: _ Class: _ Date: _ ID: Green Version...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online