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Microbiology for Health Science - Exam 2 Solved Question | BIOL 2250, Exams of Biology

Clayton State UniversityBiology
Prof. Renee E. Mcfarlane

Material Type: Exam; Professor: McFarlane; Class: Microbiology for Health Sci.; Subject: Biology; University: Clayton State University; Term: Fall 2008;

Typology: Exams

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BIOL 2250 – Microbiology for Health Sciences – Exam 2 Fall 2008
Instructor: Renee McFarlane
NAME _________________________________________
Mark your answers on BOTH the scantron sheet and on the test.
Write your name on the first page of the test and on the scantron answer sheet. If there is not an answer marked
on the test, then you will not receive credit for mistakes due to erasure.
The test is worth 100 points. The multiple-choice will be worth 80 points and the true/false questions are worth
a total of 20 points.
Please report any typos or numbering errors.
Finally, if a question is not clear, ASK for clarification. If you are confused about how to mark the
answers on your scantron sheet ASK! Credit will not be given for unasked questions.
1.Enzyme repression or induction acts at the level
of
a. DNA replication
b. transcription
c. translation
d. post translation
2.Which of the following cannot be the structure of
the genes of a virus?
a. Single stranded DNA
b. Double stranded DNA
c. Double stranded RNA
d. A strand composed of both RNA and
DNA
3.An enzyme that covalently bonds nucleotide
sequences in DNA is
a. RNA polymerase.
b. DNA ligase.
c. restriction enzyme.
d. transposase.
e. DNA polymerase.
4. What type of molecule is the capsid surrounding
the virus made of?
a. DNA
b. Protein
c. RNA
d. Cellulose
e. Carbohydrates
5. Genetic change in bacteria can be brought about
by
a. mutation.
b. conjugation.
c. transduction.
d. transformation.
e. All of the above.
6. What is the reproductive cycle of a phage virus
called in which the virus’s DNA is combined
with the host cell’s DNA to form a prophage?
a. Lytic cycle
b. Mitosis
c. Meiosis I
d. Lysogenic cycle
e. Binary fission
7. An enzyme that copies DNA to make a molecule
of RNA is
a. RNA polymerase.
b. DNA ligase.
c. restriction enzyme.
d. transposase.
e. DNA polymerase.
8. Which enzymes are retroviruses equipped with
that allows them to transcribe DNA from an
RNA template?
a. DNA ploymerase
b. Reverse transcriptase
c. Primase
d. Ligase
1
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Download Microbiology for Health Science - Exam 2 Solved Question | BIOL 2250 and more Exams Biology in PDF only on Docsity!

Instructor: Renee McFarlane

NAME _________________________________________

Mark your answers on BOTH the scantron sheet and on the test.

Write your name on the first page of the test and on the scantron answer sheet. If there is not an answer marked

on the test, then you will not receive credit for mistakes due to erasure.

The test is worth 100 points. The multiple-choice will be worth 80 points and the true/false questions are worth

a total of 20 points.

Please report any typos or numbering errors.

Finally, if a question is not clear, ASK for clarification. If you are confused about how to mark the

answers on your scantron sheet ASK! Credit will not be given for unasked questions.

1.Enzyme repression or induction acts at the level of a. DNA replication b. transcription c. translation d. post translation 2.Which of the following cannot be the structure of the genes of a virus? a. Single stranded DNA b. Double stranded DNA c. Double stranded RNA d. A strand composed of both RNA and DNA 3.An enzyme that covalently bonds nucleotide sequences in DNA is a. RNA polymerase. b. DNA ligase. c. restriction enzyme. d. transposase. e. DNA polymerase.

  1. What type of molecule is the capsid surrounding the virus made of? a. DNA b. Protein c. RNA d. Cellulose e. Carbohydrates
  2. Genetic change in bacteria can be brought about by a. mutation. b. conjugation. c. transduction. d. transformation. e. All of the above.
  3. What is the reproductive cycle of a phage virus called in which the virus’s DNA is combined with the host cell’s DNA to form a prophage? a. Lytic cycle b. Mitosis c. Meiosis I d. Lysogenic cycle e. Binary fission
  4. An enzyme that copies DNA to make a molecule of RNA is a. RNA polymerase. b. DNA ligase. c. restriction enzyme. d. transposase. e. DNA polymerase.
  5. Which enzymes are retroviruses equipped with that allows them to transcribe DNA from an RNA template? a. DNA ploymerase b. Reverse transcriptase c. Primase d. Ligase

Instructor: Renee McFarlane

  1. Lysogeny can result in all of the following except a. immunity to reinfection by the same phage. b. acquisition of new characteristics by the host cell. c. immunity to reinfection by any phage. d. transduction of specific genes.
  2. What is the major component of the bacterial genome? a. One double stranded, circular DNA molecule b. One single stranded, circular RNA molecule c. One double stranded, linear DNA molecule d. One single stranded, linear DNA molecule
  3. Diseases that are always present in a community, usually at a low, more or less constant, frequency are classified as having an _________________ pattern. a. epidemic b. endemic c. pandemic d. sporatic e. reemerging
  4. What is the direct transfer of genetic material between two bacterial cells that are temporarily joined? a. Transduction b. Conjugation c. Transformation d. Recombination
  5. DNA is constructed of a. a single strand of nucleotides with internal hydrogen bonding. b. nucleotides bonded A-C and G-T. c. two strands of nucleotides running antiparallel. d. two strands of identical nucleotides with hydrogen bonds between them. e. All of the above.
  6. A disease vector is a(n) a. organism that transmits a disease b. symptom of a disease c. environmental condition associated with a disease d. sign of a disease
  7. Which of the following statements is true concerning epidemic diseases? a. They are usually not very contagious. b. At the end of the epidemic, a disease spreads at an increasing rate and then abruptly disappears. c. They usually appear and disappear seasonally. d. None of the above
  8. F factor plasmids play a major role in what bacterial process? a. Transduction b. Replication c. Conjugation d. Transformation e. Binary fission
  9. Which of the following is most likely a product of an early gene? a. Capsid proteins b. DNA polymerase c. Envelope proteins d. Spike proteins e. Lysozyme
  10. An epidemic that becomes unusually widespread and even global in its reach is referred to as a a. pandemic b. hyperendemic c. emerging disease d. reemerging disease

Instructor: Renee McFarlane

  1. In the figure below, which of these is a complex virus? a. A b. B c. C d. D e. All of the above
  2. In order for a virus to replicate: a. the capsid must enter the host cell cytoplasm b. the host cell must be undergoing mitosis c. the genome must be released in the cytoplasm d. the host cell must lack a cell membrane
  3. Direct methods of transmission include: a. respiratory droplets b. consumption of contaminated food or water c. transportation of a microbe on the legs of an insect d. contact with fomites
  4. The size of viruses is usually measured in: a. micrometers b. decimeters c. nanometers d. millimeters e. centimeters
  5. The yeast Candida albicans does not normally cause disease because of a. symbiotic bacteria b. antagonistic bacteria c. parasitic bacteria d. commensal bacteria
  6. The population of microbes that infect the body without causing disease are called: a. parasites b. pathogens c. opportunists d. normal flora e. viruses
  7. Which one of the following point mutations causes no change in the activity of the protein? a. Missense mutation b. Nonsense mutation c. Frameshift mutation d. Silent mutation
  8. Fomites are: a. microbes that are not regarded as disease agents b. an organism that has recovered from disease but continues to shed disease agents c. a continuing natural source of disease organisms d. an inanimate object that carries disease organisms
  9. Infections that spread from animal to human are called a. fomites. b. zoonoses. c. carriers. d. vectors. e. vehicle transmission. Match the following patterns of infection to its description in questions 38 – 40. Choices may be used more than once (and some may not be used at all). A. Incubation B. Prodromal C. Period of Illness D. Period of Decline E. Period of Convalescence
  10. Recovery and repair E
  11. Time between infection and signs A
  12. Most contagious and immune system most active C

Instructor: Renee McFarlane

  1. Bacterial cells undergo genetic recombination. a. True b. False
  2. DNA is the template for both DNA and RNA synthesis. a. True b. False
  3. DNA replication is bidirectional in prokaryotes with circular chromosomes. a. True b. False
  4. Lysogeny is limited to bacteriophages; similar relationships have not been found among animal viruses. a. True b. False
  5. A lytic infection results in destruction of the host cell. a. True b. False
  6. When UV radiation damage, occurs, DNA repair occurs only in the absence of the template. a. True b. False
  7. Echovirus has an enveloped protein capsid. a. True b. False
  8. Picornaviridae represents the genus name. a. True b. False
  9. Food and water are considered disease vehicles. a. True b. False
  10. Echovirus is single stranded RNA virus. a. True b. False BONUS – WORTH 5 POINTS (PLEASE WRITE BONUS ON THE BACK OF THE SCANTRON IN THE GREEN AREA! FAILURE TO DO SO WILL RESULT IN LOSS OF POINTS! NO EXCEPTIONS!) We watched the show House, M.D. during two class sessions. What type of infection was Echovirus? What was the ultimate treatment for the babies? Who was the culprit and what type of transmission was this? During clinic visits, what was House referring to when he mentioned “parasite”?