Description : Bacteria growing at moderate temperature are — bacteria a. Thermophilic b. Mesophilic c. Psychrophilic d. None of these
Last Answer : b. Mesophilic
Description : Most pathogenic bacteria are classified as ____. a. psychrotrophic c. psychrophilic b. thermotrophic d. mesophilic
Last Answer : d. mesophilic
Description : ____ organisms tolerate low temperatures and can grow under refrigeration. a. Psychrophilic c. Psychrotrophic b. Mesophilic d. Thermotrophic
Last Answer : c. Psychrotrophic
Description : Microbes that prefer cold temperatures are ____. a. mesophilic c. psychrophilic b. thermophilic d. obligative
Last Answer : c. psychrophilic
Description : Which one of the following statements is true of fungal growth? a. Most fungi grow best at 37 degrees C. b. Most fungi, with the exception of yeasts, are anaerobic. c. Most fungi thrive under mildly acidic conditions. d. Most fungi grow in extreme environments.
Last Answer : c. Most fungi thrive under mildly acidic conditions.
Description : In terms of temperature tolerance, human pathogens tend to be a. Psychrophilic b. Thermophiles c. Mesophylls d. Hyper thermophiles
Last Answer : c. Mesophylls
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 : Bacteria or molds that require atmospheric oxygen are ____. a. anaerobic c. mesophilic b. aerobic d. thermophilic
Last Answer : b. aerobic
Description : The photosynthetic pigments used by the green sulfur bacteria and some archaeal species are a. Chlorophyll b. Bacteriochlorophyll c. Cytochrome d. Sulfate
Last Answer : b. Bacteriochlorophyll
Description : The PCR/sequencing approach to rRNA is most likely to give information about A.the species to which the bacteria are most closely related B.morphology of the bacterium C.the type of energy metabolism the bacterium has D.whether the bacterium is motile
Last Answer : A.the species to which the bacteria are most closely related
Description : Most important species of vinegar bacteria causing sliminess is A-.Acetobacteraceti B- Saccharomyces carlsbergiensis C- Lactobacillus lactis D- None of the above
Last Answer : .Acetobacteraceti
Description : Most important species of vinegar bacteria causing sliminess is A- Acetobacteraceti B- Saccharomyces carlsbergiensis C- Lactobacillus lactis D- None of the above
Last Answer : Acetobacteraceti
Description : The species of bacteria, which possesses 250 genes for lipid biosynthesis is A- M. genitalium B- M. tuberculosis C- E. coli D-H. influenza
Last Answer : M. tuberculosis
Description : Mycoplasmas, rickettsiae, and chlamydiae are A- .types of fungi B- small bacteria C- species of protozoa D- forms of viruses
Last Answer : small bacteria
Description : _____ bacteria live as individuals and do not live in biofilms. a. Planktonic b. Anaerobic c. Aerobic d. Facultative anaerobic
Last Answer : a. Planktonic
Description : Polluted water usually contains coliform bacteria like _____. a. Streptococcus b. Proteus c. Escherichia coli d. Pseudomonas
Last Answer : c. Escherichia coli
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 : During Griffith's transformation experiments _____. a. Live S Strain Bacteria Mixed With Dead R Strain Bacteria Caused Animal Death. b. Live S Strain Bacteria Mixed With Dead R Strain Bacteria Failed To ... . d. Dead S Strain Bacteria Mixed With Live R Strain Bacteria Failed To Kill The Animals.
Last Answer : c. Dead S Strain Bacteria Mixed With Live R Strain Bacteria Caused Animal Death.
Description : In the three domain system, fungi would belong to the _____. a. Eukarya b. Bacteria c. plants d. Archaea
Last Answer : a. Eukarya
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 : 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 : 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 : Traveler's diarrhea is most often caused by a species of _____. a. Salmonella b. Vibrio c. Escherichia d. Listeria
Last Answer : c. Escherichia
Description : When nutrients are limiting, some bacterial species can form resistant structures called _____. a. endospores b. cysts c. seeds d. capsules
Last Answer : a. endospores
Description : The second word in a species name is referred to as the _____. a. genus b. order c. specific epithet d. biotype
Last Answer : c. specific epithet
Description : A _____ is a communal association of microbes. a. Domain b. Biofilm c. Division d. Species
Last Answer : b. Biofilm
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 : .Bacteria having no flagella are unable to A- move B- reproduce C- stick to tissue surfaces D- grow in nutrient agar
Last Answer : move
Description : What is the number that comes next in the sequence? 2, 5, 9, 19, 37, __ (A) 76 (B) 74 (C) 75 (D) 50
Last Answer : Answer: C
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 : A bus can travel 25% faster than a van. Both start from a certain shop at the same time and reach poin P, 37.5 kms away from the shop at the same time time. On the way, however, the bus lost about 6.25 mins while shopping at the some such places. The speed of the van is. a) 72 b) 73 c) 74 d) 75
Last Answer : A Let speed of the car be x kmph The speed of the train = 125x/100 =5x/4 km/hr Therefore 37.5 / x – 37.5 /(5x/4) = 6.25 /60 37.5 / x – (37.5*4)/5x = 6.25 / 60 37.5 / x – 150 / 5x = 6.25 / 60 37.5 / x – 30/x = 6.25 / 60 7.5 / x = 6.25 / 60 6.25x = 7.5*60 X=72 km/hr
Description : .If a 1:600 dilution of a test compound kills a standard population of Staphylococcus aureus in 10minutes but not 5 minutes while a 1:60 dilution of phenol kills the population in thesame time, what is the phenol coefficient of the test compound? A- 1 B- 5 C- .10 D- .50
Last Answer : .10
Description : What is the mean median mode and range of 78 25 57 98 20 48 45 37 88 24 19?
Last Answer : 19, 20, 24, 25, 37, 45, 48, 57, 78, 88, 98Mean: 49Median: 45Range: 79There is no mode.
Description : What number comes in the sequence 98 63 37 19?
Last Answer : The sequence of number is 7.
Description : What is the body temperature of a normal man? A. 81.1 °C B. 37.0 °C (Answer) C. 98.6 °C D. 21.7 °C
Last Answer : B. 37.0 °C (Answer)
Description : 12 17 32 57 ? 137 a) 98 b) 95 c) 37 d) 92 e) none of these
Last Answer : The pattern of the number series is 12+5×1=17, 17+5×3=32, 32+5×5=57 57+5×7=92, 92+5×9=137 Answer: d)
Description : Assuming that the disk head is located initially at 32, find the number of disk moves required with FCFS if the disk queue of I/O block requests are 98, 37, 14, 124, 65, 67: (A) 310 (B) 324 (C) 320 (D) 321
Last Answer : (D) 321
Description : Consider a disk queue with request for input/output to block on cylinders 98, 183, 37, 122, 14, 124, 65, 67 in that order. Assume that disk head is initially positioned at cylinder 53 and moving ... and 252 cylinders (B) 640 and 236 cylinders (C) 235 and 640 cylinders (D) 235 and 252 cylinders
Last Answer : Answer: 236 and 208 cylinders Explanation: SSTF Initial head position =53 The closest queue to initial head position=65 head moves from 53 to 65=12 head moves from 65 to 67=2 head moves from 67 ... 122=24 head moves from 122 to 124=2 head moves from 124 to 183=59 Total head movement=208
Description : If the Disk head is located initially at track 32, find the number of disk moves required with FCFS scheduling criteria if the disk queue of I/O blocks requests are: 98, 37, 14, 124, 65, 67 (A) 320 (B) 322 (C) 321 (D) 319
Last Answer : (C) 321
Description : The price of dhal is increased from $ 30 to $ 37.5 per kg. Find the percentage increase in price. a) 25 b) 60 c) 45 d) None e) 98
Last Answer : Answer: A Price of dhal before = $30 Price of dhal now = $ 37.5 Increase in dhal = current price - original price = $37.5 - $ 30 = $ 7.5 Therefore, percentage increase in price = Increase in price/ ... = 7.5 / 30 100 = 750/100 = 25 % Thus, increase in price= 25 %
Description : _____ is water that is safe to drink. a. Potable water b. Surface water c. Well water d. Ground water
Last Answer : a. Potable water
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 cytotoxic T cells have a_____ co-receptor while the helper T cells have a _____ co-receptor. a. CD8. CD4 b. CD4, CD8 c. MHCI, MHCII d. MHCII, MHCI
Last Answer : a. CD8. CD4
Description : An acute disease becomes _____ when the body is incapable of ridding itself of the pathogen, while a local disease becomes ______ when it disseminates to deeper organs and tissues. a. Contagious; Systemic b. Contagious; Secondary c. Chronic; Systemic d. Chronic; Secondary
Last Answer : c. Chronic; Systemic