Sail E0 Webinar

MCQs

Total Questions : 137 | Page 5 of 14 pages
Question 41. Which of the following problem makes it impossible to satisfy all of Koch's postulates?
  1.    Microorganism causes serious symptoms in humans
  2.    Microorganism cannot be isolated in pure culture
  3.    Species of microorganism is in question
  4.    Genes from the microorganism cannot be amplified by PCR
 Discuss Question
Answer: Option B. -> Microorganism cannot be isolated in pure culture
Answer: (b).Microorganism cannot be isolated in pure culture
Question 42. Intestinal bacteria can grow in the presence of __________ whereas nonintestinal bacteria are usually inhibited.
  1.    bile salts
  2.    low concentration of various dyes
  3.    sugars
  4.    low levels of nitrogen
 Discuss Question
Answer: Option A. -> bile salts
Answer: (a).bile salts
Question 43. A medium containing crystal violet dye plus sodium deoxycholate will allow
  1.    gram (-)ve intestinal bacteria to grow
  2.    gram (+)ve intestinal bacteria to grow
  3.    aquatic bacteria to grow
  4.    none of these
 Discuss Question
Answer: Option A. -> gram (-)ve intestinal bacteria to grow
Answer: (a).gram (-)ve intestinal bacteria to grow
Question 44. All bacteria that inhabit the human body are
  1.    heterotrophs
  2.    chemolithotrophs
  3.    autotrophs
  4.    phototroph
 Discuss Question
Answer: Option A. -> heterotrophs
Answer: (a).heterotrophs
Question 45. Which of the following bacteria can grow in alkaline pH?
  1.    Shigella
  2.    Lactobacilli
  3.    Salmonella
  4.    Vibrio cholerae
 Discuss Question
Answer: Option D. -> Vibrio cholerae
Answer: (d).Vibrio cholerae
Question 46. Which of the following methods is most likely to be quantitative?
  1.    Dilution and plating
  2.    Gram staining
  3.    Wet mount
  4.    None of these
 Discuss Question
Answer: Option A. -> Dilution and plating
Answer: (a).Dilution and plating
Question 47. When a substance is added to a liquid medium which inhibits the growth of unwanted bacteria and favors the growth of wanted bacteria, it is known as
  1.    differential medium
  2.    enriched medium
  3.    enrichment medium
  4.    selective medium
 Discuss Question
Answer: Option C. -> enrichment medium
Answer: (c).enrichment medium
Question 48. Which of the following hint(s) suggest/s that a given specimen is likely to contain anaerobic bacteria?
  1.    Gas in specimen
  2.    Foul odour
  3.    Presence of sulphur granules
  4.    All of these
 Discuss Question
Answer: Option D. -> All of these
Answer: (d).All of these
Question 49. In the pour plate method, the mixed culture is diluted directly in tubes of
  1.    liquid agar medium
  2.    sterile liquid usually water
  3.    both (a) and (b)
  4.    none of these
 Discuss Question
Answer: Option A. -> liquid agar medium
Answer: (a).liquid agar medium
Question 50. Viable plate count can be obtained using
  1.    Spread plate method
  2.    Pour plate method
  3.    both (a) and (b)
  4.    Hemocytometer
 Discuss Question
Answer: Option C. -> both (a) and (b)
Answer: (c).both (a) and (b)

Latest Videos
Chapter 1 - GLOBAL STEEL SCENARIO & INDIAN STEEL INDUSTRY Part 1 : (13-04-2024) INDUSTRY AND COMPANY AWARENESS (ICA)
Direction Sense Test Part 1 Reasoning (Hindi)
Chapter 1 - RMHP / OHP / OB & BP Part 1 : (14-02-2024) GPOE
Cube & Cuboid Part 1 Reasoning (Hindi)
Data Interpretation (DI) Basic Concept Reasoning (Hindi)
Counting Figures Part 1 Counting Of Straight Lines Reasoning (Hindi)
Sail E0 free webinar Webinars
Real Numbers Part 7 Class 10 Maths
Real Numbers Part 1 Class 10 Maths
Polynomials Part 1 Class 10 Maths

Latest Test Papers

DSP Combined 1 Free Revision Test SAIL JO E-0
GPOE / GPA Combined 1 Free Revision Test SAIL JO E-0
BSP Plant Specific Review Test SAIL JO E-0
BSL Combined 1 Free Revision Test SAIL JO E-0
GFM Combined 1 Free Revision Test SAIL JO E-0