Description : Viruses can be grown on _____. a. nutrient agar b. nutrient broth c. blood agar d. tissue culture
Last Answer : d. tissue culture
Description : Which one of the following statements does NOT apply to Pilli? a. Pilli are made of protein. b. Pilli allow for attachment to surfaces. c. Pilli facilitate nutrient transport. d. Pilli contain adhesions.
Last Answer : c. Pilli facilitate nutrient transport.
Description : Why the bacterium Treponemapallidum is difficult to culture? A-.Because it requires a great deal of water to reproduce B- .Because it is unable to use carbohydrates as an energy source ... TCA cycle and oxidative phosphorylation D- Because it requires extremely low temperature at which water freezes
Last Answer : Because it lacks the genes needed for TCA cycle and oxidative phosphorylation
Description : Agar is used for solidifying culture media because A-it does not affect by the growth of bacteria B-it does not add to the nutritive properties of the medium C-the melting and solidifying points of agar solution are not the same D-all of the above
Last Answer : all of the above
Description : Flagella move the cell by A- .many flagella beating in a synchronous, whip-like motion B- an individual flagellum beating in a whip-like motion C- spinning like a propeller D- attaching to nearby particles and contracting
Last Answer : spinning like a propeller
Description : Flagella move the cell by A- many flagella beating in a synchronous, whip-like motion B- an individual flagellum beating in a whip-like motion C- spinning like a propeller D-.attaching to nearby particles and contracting
Description : An essential element of all allergy reactions is the a. Release of interferons from tissue cells. b. Accumulation of ige on the surfaces of mast cells and basophils. c. Passage of igg from the immune system to local tissue cells. d. Elimination of all traces of plasma cells from the body.
Last Answer : b. Accumulation of ige on the surfaces of mast cells and basophils.
Description : Newcastle disease virus can be propagated B A. on Nutrient agar B. Chicken embryo C. In broth D. None of these
Last Answer : Chicken embryo
Description : The motile bacteria are able to move by (a) fimbriae (b) flagella (c) cilia (d) pili.
Last Answer : (b) flagella
Description : Why would bacteria not grow on an agar plate treated with a disinfectant?
Last Answer : What is the answer ?
Description : A paper disc or small cylinder containing antibiotic is used in the antibiotic sensitivity assay known as the a. Tube dilution method. b. Immunodiffusion method. c. Agar diffusion method. d. Passive detection method.
Last Answer : c. Agar diffusion method.
Description : The is used to determine an antibiotic‘s minimal inhibitory concentration (NEC). a. Ames test b. tube dilution method c. agar disk diffusion method d. Kirby-Bauer test
Last Answer : b. tube dilution method
Description : The concentration of agar to obtain semi solid media is A- 1.5-20%B- 0.5% or less C- >10% D- 10%but
Last Answer : 0.5% or less
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 : Which one of the following is NOT part of the streak-plate method? a. Making four sets of streaks on a plate. b. Diluting a mixed culture in molten agar. c. Using a mixed culture. d. Using a sterilized loop.
Last Answer : b. Diluting a mixed culture in molten agar.
Description : ALL the following are immunogenic except: a. Bacterial Flagella. b. Haptens. c. Bacterial Pili. d. Viral Spikes.
Last Answer : d. Viral Spikes.
Description : Number of flagella produced by motile cells in A- members of the phaeophyta is greater than members of the Oomycota B- .members of the Oomycota is greater than members of the Phaeophyta C- members of the Phaeophyta is approximately equal to members of the Oomycota D- none of the above
Last Answer : members of the Phaeophyta is approximately equal to members of the Oomycota
Description : A single polar flagella is known as A- monotrichous B-lophotrichous C- amphitrichous D-none of these
Last Answer : monotrichous
Description : cluster of polar flagella is called A-lophotrichous B- amphitrichous C- monotrichous D-petritrichous
Last Answer : lophotrichous
Description : The protein from which hook and filaments of flagella are composed of, is A- keratin B- flagellin C- gelatin D- casein
Last Answer : flagellin
Description : A cluster of polar flagella is called A-.lophotrichous B- Amphitrichous C- Monotrichous D- Petritrichous
Last Answer : .lophotrichous
Description : Primary differences between cilia and flagella are A- arrangement of microtubules B- length and location of basal bodies C- how the microtubules are fused to each other D- number, length and direction of force
Last Answer : number, length and direction of force
Description : Flagella are a. Made of carbohydrate and lipid. b. Found on all bacterial cells. c. Contain dextran fiber d. Important for chemo taxis.
Last Answer : d. Important for chemo taxis.
Description : What is evidence for the endosymbiotic theory? a. Ribosomes are the same size in eukaryotes and prokaryotes b. Organelles like mitochondria and cholorplasts have their own dna and ribosomes c. Flagella are the same in both types of cells d. A-C are correct
Last Answer : b. Organelles like mitochondria and cholorplasts have their own dna and ribosomes
Description : Which of the following do some bacterial cells use for motility? a. flagella b. cillia c. fimbriae d. pseudopodia
Last Answer : a. flagella
Description : In eukaryotic microbes, energy metabolism is associated with the _____. a. Golgi apparatus b. flagella c. cytoskeleton d. mitochondria
Last Answer : d. mitochondria
Description : Bacteria having flagella all over the body are called (a) Lophotrichous (b) Monotrichous (c) Peritrichous (d) Morphotrichous
Last Answer : Ans:(c)
Description : Which of the following statement(s) is/are true in regards to F+ x F- mating events? A- DNA is transferred from F- to F+ cells B- DNA is transferred from F+ to F- cells C- No ... F- cells are unable to perform conjugation D- No DNA is transferred because F+ cells are unable to perform conjugation
Last Answer : DNA is transferred from F+ to F- cells
Description : Are bacteria able to move, and, if so, how?
Last Answer : Bacteria (and other prokaryotes) have the ability to move by means of flagella. Flagella are composed of the globular protein flagellin. They are extremely long and thin and cannot be seen by the light ... pair of rings, while Gram- negative bacteria have both inner and outer pairs of rings).
Description : Yeasts of the species Saccharomyces a. Are Used In Bread Making. b. Reproduce By Budding. c. Are Members Of The Ascomycetes. d. All Of The Above (A—C) Are Correct.
Last Answer : d. All Of The Above (A—C) Are Correct.
Description : Which of the following is not found in the kingdom Monera? A- Organelles B- .Organized cell structure C- Ability to reproduce D-.Ability to use energy
Last Answer : Organelles
Description : By which of the following means antifungal chemotherapeutic agents may affect fungi? A- Interfere with nuclear division by preventing the aggregation of microtubules needed for mitosis B- ... membrane-bound enzymes like thoseinvolved in nutrient transport and chitin synthesis D- all of these
Last Answer : all of these
Description : Fungi in the division Deuteromycota are characterized by the fact that A- they only reproduce sexually B- they form sexual spores called deuterospores C- they are incapable of sexual reproduction D- a method of sexual reproduction has not been identified
Last Answer : a method of sexual reproduction has not been identified
Description : Peptone water and nutrient broth are A- selective media B- enriched media C- basal media D- none of these
Last Answer : basal media
Description : Which of the following is not found in the kingdom Monera? A- Organelles B- Organized cell structure C- Ability to reproduce D- Ability to use energy
Description : Peptone water and nutrient broth are - - - - - - - type of media A Basal media B Specialized media C Deferential media D Enriched media
Last Answer : A Basal media
Description : Tissue tropism refers to a. what tissues grow due to a viral infection. b. what tissues are resistant to viral infection. c. what organisms a virus infects. d. what cells or tissues a virus infects.
Last Answer : d. what cells or tissues a virus infects.
Description : One of the reasons Koch was able to show the cause of disease was that he could grow them a. in a pure culture b. in an animal host c. in a tissue culture d. in chicken eggs
Last Answer : a. in a pure culture
Description : _____ refers to bacteria that grow and spread through the blood. a. Chronic Disease b. Septicemia c. Acute Disease d. Bacteremia
Last Answer : b. Septicemia
Description : Intestinal bacteria can grow in the presence of __________whereas nonintestinal bacteria are A.bile salts B.low concentration of various dyes C.sugars D.low levels of nitrogen
Last Answer : A.bile salts
Description : Which of the following bacteria can grow in alkaline pH? A- Shigella B- .Lactobacilli C- Salmonella D- Vibrio cholera
Last Answer : Vibrio cholera
Description : A medium containing crystal violet dye plus sodium deoxycholate will allow A- gram (-)ve intestinal bacteria to grow B- gram (+)ve intestinal bacteria to grow C- .aquatic bacteria to grow D- none of these
Last Answer : gram (-)ve intestinal bacteria to grow
Description : Which of the following bacteria can grow in acidic pH? A-Vibrio cholera B- Lactobacilli C- Shigella D-Salmonella
Last Answer : Lactobacilli
Description : Psychrophilic bacteria species grow well at 10 degrees C, while mesophilic bacteria species grow well at _____ degrees C. a. 37 b. 50 c. 75 d. 98
Last Answer : a. 37
Description : Of the five classes of antibodies,_____ and_____ are primary disease fighters, while secretory _____ is found on body (mucosal) surfaces. a. IgA, IgG, IgD b. IgG, IgA, IgM c. IgG, IgD, IgM d. IgG, IgM, IgA
Last Answer : d. IgG, IgM, IgA
Description : The unique sets of proteins that present antigens on the surfaces of body cells are a. MHC proteins. b. Cytokines. c. Complement proteins. d. Immunoglobulins.
Last Answer : b. Cytokines.
Description : Streptococcus pyogenes is highly contagious by _____. a. Unwashed hands b. Oral/fecal route c. Respiratory droplets d. Remaining on surfaces for long periods of time
Last Answer : c. Respiratory droplets
Description : Ethylene oxide can be used toa. Kill Bacterial Spores. b. Clean Wounds. c. Sanitize Work Surfaces. d. Treat Water Supplies.
Last Answer : a. Kill Bacterial Spores.
Description : Capsules are similar to pili because both a. Contain DNA. b. Are made of protein. c. Contain dextran fibers. d. Permit attachment to surfaces.
Last Answer : d. Permit attachment to surfaces.
Description : An F-cell is unable to initiate conjugation because it lacks a. Double-Stranded DNA. b. A Prophase. c. An F Factor. d. DNA polymerase
Last Answer : c. An F Factor.