Description : What surgical practice was established by Lister? a. antisepsis b. chemotherapy c. variolation d. sterilization
Last Answer : a. antisepsis
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 : What process was studied by Redi and Spaltanzani? a. Spontaneous generation b. Fermentation c. Variolation d. Antisepsis
Last Answer : a. Spontaneous generation
Description : The destruction of water-borne pathogens is termed as disinfection of water. Which of the following is a water disinfectant? (A) Chlorine (B) Alkalis (C) Benzene hexachloride (D) Alkyl benzene sulphonate (ABS)
Last Answer : (A) Chlorine
Description : Which of the following chemicals are halogens used for disinfection? a. Phenol b. Alcohol c. Detergent d. Chlorine
Last Answer : d. Chlorine
Description : The process of destroying pathogens on an object is _____. a. Disinfection b. Sanitization c. Sepsis d. Antiseptic
Last Answer : a. Disinfection
Description : The medium which allows the growth of more than one microorganisms of interest but with morphologically distinguishable colonies is known as A- selective medium B- enrichment medium C- differential medium D- none of these
Last Answer : differential medium
Description : Which microorganisms are involved in the pickling process in food production?
Last Answer : In the pickling process, microorganisms grow and ferment the food in a salty environment while producing large amounts of acid from available carbohydrates. Species of Leuconostoc and Lactobacillus are ... . Different spices are added to prepare various forms of sauerkraut and pickled cucumbers.
Description : How do microorganisms influence the carbon cycle on Earth?
Last Answer : Most of the organic matter present in soil originates in plant material from leaves, rotting trees, decaying roots, and other tissues. In the carbon cycle, soil bacteria and fungi recycle ... suffer an irreversible decline as the nutrients essential for life became tied up in complex molecules.
Description : Are there any unique ways that humans derive benefits from microorganisms?
Last Answer : Humans derive substantial benefits from the activities of microorganisms. For example, many microbial species live in and on various parts of the body and prevent pathogenic bacteria from gaining a ... and used to produce vitamins, enzymes, organic acids, and other essential growth factors.
Description : When the Exxon Valdez oil spill occurred, technologists "fertilized" the oil-soaked water with _____ to modify the environment and stimulate he growth of naturally occurring microorganisms. a. nitrogen sources (e.g., urea) b. phosphorus compounds c. other mineral nutrients d. A-C above are correct
Last Answer : d. A-C above are correct
Description : Food must be moist, with a minimum water content of _____before contamination by microorganisms and spoilage can occur. a. 18% to 20% b. 10 to 15% c. 5 to 10% d. 0 to 5%
Last Answer : a. 18% to 20%
Description : Spoiled food can be caused from _____. a. enterotoxins in food b. contaminating microorganisms from the air c. human food handling d. A-C are correct
Last Answer : d. A-C are correct
Description : ____ is examples of drugs that are derived from the metabolism of microorganisms. a. Salvarsan b. Prontosil c. Penicillin d. A-C are correct
Last Answer : c. Penicillin
Description : All the following characteristics apply to fungi except: a. There may be 1.5 million species. b. They lack chlorophyll. c. They include molds and yeasts. d. They are prokaryotic microorganisms.
Last Answer : d. They are prokaryotic microorganisms.
Description : What part of the GI tract contains the largest population of microorganisms (micro biota)? a. Colon b. Jejunum c. Duodenum d. Stomach
Last Answer : a. Colon
Description : Craig Venter‘s sampling of ocean microorganisms is an example of a. Microarrays. b. Horizontal Gene Transfer. c. Microbial Forensics. d. Metagenomics.
Last Answer : d. Metagenomics.
Description : Microorganisms that use organic compounds as energy and carbon sources are a. Chemoheterotrophs. b. Chemoautotrophs. c. Photoautotrophs. d. Photoheterotrophs.
Last Answer : c. Photoautotrophs.
Description : When acetate is the sole source of carbon for some microorganisms, the cycle which is used, is called A.pentose phosphate pathway B.glycolyic pathway C.glyoxylate pathway D.oxaloacetate pathway
Last Answer : C.glyoxylate pathway
Description : Which of the following microorganisms is classified as a member of archaebacteria? A- Gyanobacteria B- Methanobacteria C-Trichomonads D- Mycoplasma
Last Answer : Methanobacteria
Description : Microbiology includes which of the following groups of microorganisms? a. bacteria b. fungi c. algae d. protozoa e. all the above
Last Answer : e. all the above
Description : First person to describe microorganisms A Carolus Linnaeus B Robert Hooke C Francesco Redi D Antony van Leeuwenhoek
Last Answer : B Robert Hooke
Description : Immunological tolerance to ―self‖ is established by a. Destruction of self-reactive lymphoid cells. b. Clonal anergy. c. Clonal deletion. d. All the above (A—C) are correct.
Last Answer : d. All the above (A—C) are correct.
Description : Newborns exposed to Chlamydia trachomatis from an infected mother may experience a. Toxic Shock Syndrome or Staphylococcal Skin Disease. b. Dental Caries When the Teeth Grow In. c. Destruction of the Reproductive Organs. d. Disease of the Eyes or Lungs.
Last Answer : d. Disease of the Eyes or Lungs.
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 : The function of a viral capsid is A.protection against the viral genome from physical and enzymatic destruction B.providing binding sites that enable the virus to attach to specific receptor sites on the host ... C.serving as a vehicle of transmission from one host to another D.all of the above
Last Answer : D.all of the above
Description : Bacterial cells susceptible to penicillium can be protected from destruction if the medium in which they are exposed is of A- high osmotic pressure B- low osmotic pressure C- moderate osmotic pressure D- high surface tension
Last Answer : high osmotic pressure
Description : A Candida albicans infection of the intestine, vagina, or oral cavity are commonly treated with a. cefotaxime. b. vidarabine. c. streptomycin. d. nystatin.
Last Answer : d. nystatin.
Description : The site where a pathogen enters the body is commonly called the _____ while the number of pathogens necessary to establish an infection is the _____. a. Penetration Point; Dose b. Penetration Point; Acme c. Portal Of Entry; Dose d. Portal Of Entry; Acme
Last Answer : c. Portal Of Entry; Dose
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
Last Answer : a. Yersinia pestis.
Description : Swimmer's ear is commonly seen in children from swimming pools in the summer. It is often caused by _____. a. Streptococcus b. Staphylococcus aureus. c. Pseudomonas d. A-C are correct
Description : The _____ is the most commonly infected region of the respiratory tract. a. Lungs b. Bronchi c. Throat d. Nose e. Tonsils
Last Answer : d. Nose
Description : The organism commonly used for the production of carotene is/ are β A- Phycomycesblakesleeanus B- Phycomycesblakesleeanus C- Blakesleatrispora D- all of these
Last Answer : all of these
Description : Which of the following is correct for CD8 T cells? A- CD8 T cells only recognize virus-infected cells B- CD8 T cell receptor recognizes epitopes that are also commonly recognized by B cells ... selection only D- CD8 T cells can kill individual virus-infected cells in a contact dependent fashion
Last Answer : CD8 T cells can kill individual virus-infected cells in a contact dependent fashion
Description : Which of the following statement describes plasmids? A- Another name for a protoplast B- A complex membrane structure that covers the chromosome of bacteria Small, circular DNA molecules that can exist independently of chromosomes commonly C- found in bacteria D- None of the above
Last Answer : found in bacteria
Description : The type of recombination that commonly occurs between a pair of homologous DNA sequences is, A- mutagenic recombination B- site-specific recombination C- replicative recombination D- general recombination
Last Answer : general recombination
Description : The solidifying agent commonly used in preparation of media is/are A-agar B-silica gel C-both (a) and (b) D-none of these
Last Answer : both (a) and (b)
Description : Browne’s tubes are the most commonly used indicator for _ _ _ _ _ _ _ _ A Heat sterilization B Radiation sterilization C Gaseous sterilization D Filtration sterilization
Last Answer : A Heat sterilization
Description : What immunodeficiency disorder is associated with a tack of T and B cells and complete immune dysfunction? a. DiGeorge syndrome b. Severe combined immunodeficiency disease c. Chronic granulomatous disease d. Chédiak-Higashi syndrome
Last Answer : b. Severe combined immunodeficiency disease
Description : Which of the following defines an open reading frame (ORF)? A.A sequence of genome in bacteriophage B.The sequence of a complete genome C.A plasmid vector used in genome sequencing D.A possible gene predicted by DNA sequencing
Last Answer : D.A possible gene predicted by DNA sequencing
Description : Which of the following defines an open reading frame (ORF)? A- .A sequence of genome in bacteriophage B- The sequence of a complete genome C- A plasmid vector used in genome sequencing D- .A possible gene predicted by DNA sequencing
Last Answer : .A possible gene predicted by DNA sequencing
Description : Do you disinfect everything you buy after shopping? That would be normal, wouldn't it?
Last Answer : That would be best, yes. If you already buy gloves, don't take the virus home. I usually blow everything that isn’t fruit and its packaging with a blown disinfectant. I wash the fruits well.
Description : Do you know what a UV disinfection robot is and do you have access to one?
Last Answer : UV disinfection robot is the one that cleans and reduces the bacteria, harmful microorganisms that are hazardous to humans by exposing some amount of UV rays over them. No, I didn't use it but many others in the world are using it.
Description : Which of the following is not used for disinfection of drinking water?
Last Answer : Which of the following is not used for disinfection of drinking water? A. Chlorine B. Ozone C. Chloramine D. Phenyl
Description : What are the disinfection tips for coronavirus?
Last Answer : I feel skeptical about the disinfection for coronavirus.
Description : In water treatment plant, use of chloramines ensures (1) taste and odour control (2) weed control in reservoirs (3) disinfection (4) removal of permanent hardness
Last Answer : (3) disinfection Explanation: The particular type of chloramine used in drinking water disinfection is called monochloramine. Chloramine is chiefly a secondary disinfectant that are added to water that has already been disinfected with a primary disinfectant, often chlorine
Description : The amount of Chlorine available in water after disinfection is called as – (1) free chlorine (2) residual chlorine (3) free available chlorine (4) combined available chlorine
Last Answer : (2) residual chlorine Explanation: The word "residual" means "remainder" or "that which is left", and as the name suggests the chlorine residual is measure of the amount of chlorine ... system. Tests for chlorine residual are probably the most frequently performed tests at water treatment plants.
Description : Dose of chlorine for disinfection of water is about __________ mg/litre of water. (A) 0.01 (B) 0.1 (C) 0.3 (D) 1
Last Answer : (D) 1