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 : .plaque
Description : A plaque is a a. Change In Cell Structure Due To Viral Infection. b. Viral Cell Inclusion. c. Clear Zone Within A Lawn Of Bacteria. d. Cellular Aggregation Of Phage Heads.
Last Answer : c. Clear Zone Within A Lawn Of Bacteria.
Description : Competence refers to a bacterial cell's ability to a. Take Up DNA Fragments From The Environment. b. Be Infected By A Transducing Phage. c. Produce A Protein Product From An Engineered Gene. d. Undergo Conjugation With An F+ Cell.
Last Answer : a. Take Up DNA Fragments From The Environment.
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 : The first step in infection of a host bacterial cells by a phage is A- adsorption B- absorption C- penetration D- replication
Last Answer : adsorption
Description : Which of the following is NOT a condition seen with the development of dental caries? a. A Susceptible Tooth With A Buildup Of Plaque b. Dietary Carbohydrates (Usually Sugar) c. Acidogenic Bacterial Species d. Chewing A Lot Of Gum
Last Answer : d. Chewing A Lot Of Gum
Description : Which one of the following statements does NOT apply to dental plaque? a. It is an example of a biofilm. b. It is most noticeable on the molars. c. Its buildup on teeth can lead to gingivitis and periodontal disease. d. It is dominated by aerobic bacterial species.
Last Answer : d. It is dominated by aerobic bacterial species.
Description : A common trait among Herpes viruses is _____. a. Lysogeny b. Lysis c. Laxity d. Latency
Last Answer : d. Latency
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 : 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 : A is NOT associated with specialized transduction. a. Virulent Phage b. Lysogenic Cycle c. Prophage d. Recipient Cell
Last Answer : a. Virulent Phage
Description : Which phage always carries a small piece of E.coli genome? A.Lambda B.Mu C.T4 D.T3
Last Answer : B.Mu
Description : Which of the phage types of Mycobacterium tuberculosis occurs most frequently in India? A.Type A B.Type B C.Type C D.Type
Last Answer : D.Type
Description : During the first 10 minutes after injection of phage DNA, no phage can be recovered by disrupting the infected bacterium. This is termed as A- eclipse period B- rise period C- latent period D- burst size
Last Answer : eclipse period
Description : Which phage always carries a small piece of E.coli genome? A- Lambda B- .Mu C- T4 D- T3
Last Answer : .Mu
Description : In the extracellular medium, DNA-degrading enzymes would likely be to prevent transfer of DNA by A- conjugal transfer by a self-transmissible plasmid B- generalized phage transduction C- natural transformation D- none of the above
Last Answer : natural transformation
Description : An enzyme which brings about lysis of bacterial cell wall is (A) Amylase (B) Lysozyme (C) Trypsin (D) Lipase
Last Answer : Answer : B
Description : What type of periodontal disease occurs when plaque bacteria build up between teeth and gums? a. Trench mouth b. ANUG c. Gingivitis d. Periodontitis
Last Answer : c. Gingivitis
Description : A cosmid is a (A) Large bacterial plasmid (B) Viral plasmid (C) Hybrid of plasmid and phage (D) Yeast plasmid
Last Answer : Answer : C
Description : DNA fragments upto 45 kilobases in size can be cloned in (A) Bacterial plasmids (B) Lambda phage (C) Cosmids (D) Yeast artificial chromosomes
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 : The process of___________involved inoculation of dried small pox scabs under the skin. a. vaccination b. antisepsis c. variolation d. immunization
Last Answer : a. vaccination
Description : Plaque is considered as an infection because: A. Antibiotic therapy prevents or stop its formation B. Indication of bacterial activity C. It is common to both animal and human
Last Answer : B. Indication of bacterial activity
Description : Starvation proteins are produced by a culture during which of the following segments of the growth curve? A - Lag phase B- Exponential phase C- Stationary phase D- Death phase
Last Answer : Stationary phase
Description : Small pox is a deadly and highly contagious: (1) Bacterial Disease (2) Viral disease (3) Fungal disease (4) Vitamin deficiency disease
Last Answer : (2) Viral disease Explanation: Smallpox is a contagious disease caused by the Variola virus, so it is a viral disease.
Description : The bacterium Deinococcus radiodurans has been of interest to molecular biologists because a. it has the smallest known bacterial genome. b. it is a "living fossil" linking the Bacteria and Archaea. c. it has the largest known bacterial genome. d. it is very resistant to radiation damage.
Last Answer : d. it is very resistant to radiation damage.
Description : Reproduction in bacterial cells occurs by the sequence of events known as _____. a. mitosis b. binary fission c. selfing d. budding
Last Answer : b. binary fission
Description : .In developing plaque; the adhesive polymer produced by streptococcus mutans is synthesis from: A. Glucose B. Fructose C. Sucrose D. Lactose E. Amylose
Last Answer : C. Sucrose
Description : Bacterial leaf blight of rice is caused by a species (a) Alternaria (b) Erwinia (c) Xanthomonas (d) Pseudomonas.
Last Answer : (c) Xanthomonas
Description : Bacillus subtilis makes a good "bacterial factory" in genetic engineering because _____. a. it normally retains the products it makes b. it is not a human pathogen c. contains endotoxins in it's cell wall d. traditionally ferments sugars
Last Answer : b. it is not a human pathogen
Description : Bacterial species in fish are naturally adapted to the cold environment in which most fish live and thus, _____ will not affect them; _____ is preferred. a. heating, cooking b. cooling, refrigeration c. warming, boiling d. cooling, freezing
Last Answer : d. cooling, freezing
Description : Antibiotics will not work against _____ diseases because they lack the structures and metabolic machinery with which antibiotics interfere. a. viral b. bacterial c. fungal d. protozoan
Last Answer : a. viral
Description : The imidazole drugs are of value for treating a. Viral diseases. b. Protozoal diseases and bacterial diseases. c. Bacterial diseases. d. Fungal diseases.
Last Answer : d. Fungal diseases
Description : Gentamicin and other aminoglycoside drugs are widely prescribed for treatment of _____ infections. a. fungal b. gram-positive bacterial c. gram-negative bacterial d. staphylococcal
Last Answer : c. gram-negative bacterial
Description : The sulfonamides interfere with bacterial metabolism by a. blocking cell wall synthesis. b. disrupting folic acid metabolism. c. reacting with bacterial cell membranes. d. inhibiting DNA replication.
Last Answer : b. disrupting folic acid metabolism.
Description : Vancomycin inhibits _____________ synthesis. a. protein b. DNA c. bacterial cell wall d. RNA
Last Answer : c. bacterial cell wall
Description : Which one of the following is not an antigen? a. A toxin b. A virus c. A bacterial cell d. All (A-C) are antigens
Last Answer : d. All (A-C) are antigens
Description : ALL the following are immunogenic except: a. Bacterial Flagella. b. Haptens. c. Bacterial Pili. d. Viral Spikes.
Last Answer : d. Viral Spikes.
Description : Pyrogens are a. Proteins Affecting the Hypothalamus. b. Bacterial Fragments. c. Fever-Producing Substances. d. All the Above (A—C) Are Correct.
Last Answer : d. All the Above (A—C) Are Correct.
Description : The bacterial enzyme ______ assists the spread of bacteria away from a blood clot, while ______ assists the spread through body tissues. a. Streptokinase; Hyaluronidase b. Streptokinase; Hemolysin c. Coagulase; Hyaluronidase d. Coagulase; Hemolysin
Last Answer : a. Streptokinase; Hyaluronidase
Description : Which one of the following is NOT true of exotoxins? a. They are proteins. b. They are part of cell wall structure. c. They are released from live bacterial cells. d. They trigger antibody production.
Last Answer : d. They trigger antibody production.
Description : A healthy person can be diagnosed as having a infection with the multiplication of bacterial cells in the blood. a. Primary; bacteremia b. Primary; vermeil c. Primary; septicemia d. Secondary; parasitemia
Last Answer : c. Primary; septicemia
Description : Which of the following is NOT one of the organisms that are in Protista? a. plant-like organisms b. animal-like organisms c. fungal-like organisms d. bacterial-like organisms
Last Answer : d. bacterial-like organisms
Description : The most common cause of an invasive wound infection, such as a burn, is a. gram-positive bacterial species. b. treponema pallidum. c. Pseudomonas aeruginosa. d. Escherichia coli.
Last Answer : c. Pseudomonas aeruginosa.
Description : The skin is a. Dominated By Gram-Negative Bacterial Cells. b. Free Of Bacterial Cells. c. Without A Microbiota. d. Dominated By Gram-Positive Bacterial Cells.
Last Answer : d. Dominated By Gram-Positive Bacterial Cells.
Description : What bacterial species is most often associated with cystitis? a. Treponemo pallidum b. Escherichia coIi c. Chlamydia trachomatis d. Pseudomonas aeruginosa
Last Answer : b. Escherichia coIi
Description : The majority of bacterial species that cause foodborne and waterborne illnesses in humans are _____. a. Gram-Negative Rods b. Gram-Negative Cocci c. Gram-Positive Rods d. Rods Without A Wall
Last Answer : a. Gram-Negative Rods
Description : The most commonly reported cause of invasive bacterial gastroenteritis is associated with which of the following bacterial genera? a. Campylobacter b. Staphylococcus c. Shigeila d. Ciostridium
Last Answer : a. Campylobacter
Description : What is the name of the syndrome of fever, abdominal cramps, and bloody mucoid stools caused by Shigella species? a. Bacterial dysentery b. Typhoid fever c. Pseudomembranous colitis d. HUS
Last Answer : a. Bacterial dysentery