Description : When a viral nucleic acid becomes part of the host cell chromosome it is called _____. a. lysis b. lysogeny c. maturation d. latent
Last Answer : b. lysogeny
Description : During the process of lysogeny _____. a. Phage DNA Integrates Into The Bacterial Chromosome. b. A Bacterium Acquires DNA From The External Environment. c. Competent Cells Receive Plasmids. d. New Phage Particles Are Assembled In The Host Bacterium.
Last Answer : a. Phage DNA Integrates Into The Bacterial Chromosome.
Description : Which of the following viruses has a vaccine to prevent it? a. HPV b. HIV c. fifths disease d. herpes simplex I
Last Answer : a. HPV
Description : Which of the following oncogenic viruses was first detected? A.Rous sarcoma virus. B.Epstein-Barr virus C.Herpes simplex virus type 2 D.Human T cell leukaemia virus
Last Answer : A.Rous sarcoma virus.
Description : When a virus enters a cell but does not replicate immediately, the situation is Called A.lysogeny B.fermentation C.symbiosis D.synergism
Last Answer : A.lysogeny
Description : n lysogeny, A- a bacteriophage transfers bacterial DNA B- bacteria take up double stranded DNA from the environment C- DNA-degrading enzymes in the extracellular medium would stop the process D- a bacteriophage genome is integrated into the bacterial genome
Last Answer : a bacteriophage genome is integrated into the bacterial genome
Description : Preservation methods such as salting result in the microbial cells. a. Loss Of Salt From b. Gain Of Water Into c. Loss Of Water From d. Lysis Of
Last Answer : c. Loss Of Water From
Description : Area of lysis on a bacterial lawn culture produced by a phage is known as A.pock B.plaque C.pox D.all of these
Last Answer : B.plaque
Last Answer : .plaque
Description : _____ can spread from person to person in respiratory secretions or it may be inherited congenitally. a. Measles b. Chickenpox c. Rosella d. Herpes
Last Answer : c. Rosella
Description : .Viruses that infect bacteria multiply and cause their lysis, are called (a) lysozymes (b) lipolytic (c) lytic (d) lysogenic
Last Answer : (c) lytic
Description : Arboviruses are _____ viruses. a. arthropod-borne b. arthritis causing c. tree-borne d. A-C are correct
Last Answer : a. arthropod-borne
Description : The fecal-oral route is the mode of transmission for the _____. a. Hepatitis A virus. b. Hepatitis B virus. c. Hepatitis A and B viruses. d. All hepatitis viruses.
Last Answer : b. Hepatitis B virus.
Description : Viruses can be grown on _____. a. nutrient agar b. nutrient broth c. blood agar d. tissue culture
Last Answer : d. tissue culture
Description : Retroviruses are so-named because their reverse transcriptase _____. a. reverses the flow of genetic information by stimulating information to proceed from RNA to DNA. b. reverses the normal ... the action of drugs on viruses and allows them to continue multiplying in living cells.
Last Answer : a. reverses the flow of genetic information by stimulating information to proceed from RNA to DNA.
Description : Attenuated viruses are those that _____. a. can be used to treat viral disease. b. give rise to viroids and prions. c. multiply in cells but at a low rate. d. have been treated with chemicals such as formaldehyde.
Last Answer : c. multiply in cells but at a low rate.
Description : The process of conjugation in bacteria requires that _____. a. Two Types Of Viruses Be Present. b. The Conjugating Bacteria Be Deprived Of Nutrients. c. Two Bacteria Exchange Dna. d. Two Live Bacteria Come Together.
Last Answer : d. Two Live Bacteria Come Together.
Description : Ivanowsky, Beijerinck and Reed all began studies with particles smaller than the filters they were working with. This began the study of _____. a. measles b. viruses c. prions d. bacteria
Last Answer : b. viruses
Description : The following statement(s) is/are true concerning viral infections. a. The most common post-transplantation viral infections are caused by herpes viruses and include CMV and herpes simplex virus ... HSV) infection primarily presents with a mononucleosis-type syndrome with fever, lethargy, and cough
Last Answer : Answer: a, c, Solid organ transplant patients are prone to develop viral infection by virtue of exogenous immunosuppression. The most common post-transplantation viral infections are those ... transplant patient or as painful herpes zoster in patients who have previously developed chicken pox
Description : _____ is the most common lower respiratory tract disease among infants and young children a. Respiratory Syncytial Virus (RSV) b. Viral pneumonia c. Influenza d. The common cold
Last Answer : a. Respiratory Syncytial Virus (RSV)
Description : Damage from ________ is the major cause of liver transplants in the US, alcohol and drug use are cofactors. a. hepatitis A b. hepatitis B c. hepatitis C d. herpes simplex I
Last Answer : c. hepatitis C
Description : Which of the following can be prevented by a vaccine? a. hepatitis A b. hepatitis B c. hepatitis C d. herpes simplex I
Description : Cold sores and genital herpes can be caused by a. HSV-1. b. HHV-6. c. VZV. d. HHV-8
Last Answer : a. HSV-1.
Description : Which of the following has been linked to Kaposi's sarcoma? A.Epstein-Barr virus B.Human T-cell lymphotropic virus C.Human papilloma virus D.Human herpes virus 8
Last Answer : D.Human herpes virus 8
Description : Why aren't vaccines for all of the herpes viruses available?
Last Answer : Last I heard, they are working on that.
Description : Which of the following is secondary to immune deficiency: A. Pseudo membrane deficiency B. Herpes simplex C. Squamous cell carcinoma D. Elevated Epstein bar viruses incidence
Last Answer : D. Elevated Epstein bar viruses incidence
Description : Which of the following viruses is most susceptible to acyclovir: A. Herpes simplex type I virus B. Herpes simplex type II virus C. Varicella-zoster virus D. Epstein-Barr virus
Last Answer : A. Herpes simplex type I virus
Description : What is the advantage of the attenuated viruses in a vaccine?
Last Answer : Attenuated viruses can be taken orally because they will survive passage into the gastrointestinal tract and will be absorbed into the blood stream. The method of administration is therefore easier than by ... this reason they may be advantageous when an epidemic is taking place or is anticipated.
Description : Which one of the following pairs is incorrectly matched as to antibiotic and use? a. Penicillin-gram-positive bacteria b. Nystatin-fungi c. Tetracycline-viruses d. Griseofulvin-fungi
Last Answer : c. Tetracycline-viruses
Description : In the soil, antibiotics are produced by some a. Fungal species and viruses. b. Bacterial species and viruses. c. Viruses and helminthic species. d. Fungal and bacterial species.
Last Answer : d. Fungal and bacterial species.
Description : Why should you get a new influenza vaccine every year? a. it wears off fast b. the viruses change rapidly c. you need a booster to keep the immune level up d. none of the above are correct
Last Answer : b. the viruses change rapidly
Description : An attenuated vaccine is one that a. Can provide life-long immunity. b. Contains live microbes or viruses. c. Is closest to the natural pathogens. d. All the above (a-c) are correct.
Last Answer : d. All the above (a-c) are correct.
Description : Which investigator developed a polio vaccine containing inactivated viruses? a. Enders b. Sabin c. Jenner d. Salk
Last Answer : b. Sabin
Description : These viruses multiply first in the tonsils and then the lymphoid tissues of the gastrointestinal tract. a. Rabies virus b. Rotavirus c. Polio virus d. Hepatitis A virus
Last Answer : c. Polio virus
Description : .__________are the single most important cause of diarrhea in infants and young children admitted to American hospitals. a. Noroviruses b. Echoviruses c. Hepatitis A viruses d. Rotaviruses
Last Answer : d. Rotaviruses
Description : A long thread-Like RNA virus is typical of the viruses. a. hepatitis C b. Ebola c. polio d. West Nile
Last Answer : b. Ebola
Description : Which one of the folLowing statements is NOT true of the influenza viruses? a. They have a segmented genome. b. The genome is double-stranded DNA. c. The viruses have an envelope. d. There are three types of flu viruses
Last Answer : b. The genome is double-stranded DNA.
Description : Which of the following are oncogenic viruses? a. polio b. HIV c. HPV d. rabies
Last Answer : c. HPV
Description : Which of the following viruses is a retrovirus with reverse transcriptase? a. HPV b. polio c. HIV d. Ebola
Last Answer : c. HIV
Description : Rivers' postulates can be used to a. locate an oncogene in a cell that is cancerous. b. develop inactivated viruses for use in a vaccine. c. eliminate viruses with certain chemical agents. d. relate a particular virus to a particular disease.
Last Answer : d. relate a particular virus to a particular disease.
Description : Viruses derived from fragments of cellular genetic material and macromolecules forms the basis of the a. Cellular Origins Hypothesis. b. Independent Entities Hypothesis. c. Rna World Hypothesis. d. Regressive Evolution Hypothesis.
Last Answer : a. Cellular Origins Hypothesis.
Description : Newly emerging viruses causing human disease can arise from a. Species Jumping. b. Mutations. c. Genetic Recombination. d. All Of The Above (A—C) Are Correct.
Last Answer : d. All Of The Above (A—C) Are Correct.
Description : The oncogene theory states that transforming genes a. Normally Occur In The Host Genome. b. Can Exist In Viruses. c. Are Not Of Viral Origin. d. All Of The Above (A—C) Are Correct.
Last Answer : d. All Of The Above (A—C) Are Correct
Description : Which one of the following scientists was NOT involved with discovering viruses? a. Felix d‘Herrelle b. Dimitri Ivanowsky c. Robert Fleming d. Martinus Beijerinck
Last Answer : c. Robert Fleming
Description : Transposons are of particular significance because they a. often contain genes for antibiotic resistance. b. inhibit the effects of overlapping genes. c. come in pairs and often are associated with viruses. d. regulate gene transcription in bacterial cells.
Last Answer : a. often contain genes for antibiotic resistance.
Description : When is a HEPA filter used? a. To Filter Bacteria Out Of A Vaccine b. To Trap Particles In The Air c. To Protect Burn Victims d. To Separate Bacteria And Viruses
Last Answer : b. To Trap Particles In The Air
Description : Which of the following terms best fits the destruction of all living micobes, spores and viruses. a. Sanitization b. Sterilization c. Aseptic Technique d. Pasteurization
Last Answer : b. Sterilization
Description : Which of the following characteristics would not be used to classify viruses? A.Type of cell wall structure B.Type of nucleic acid C.Presence of an envelope D.Symmetry
Last Answer : A.Type of cell wall structure
Description : The virus(es) which can cause aseptic meningitis is/are A.Polioviruses B.Coxsackieviruses C.Echo viruses D.All of these
Last Answer : D.All of these