Sail E0 Webinar

MCQs

Total Questions : 119 | Page 2 of 12 pages
Question 11. The total biomass of an organism will be determined by the nutrient present in the lowest concentration relative to the organism's requirements is a statement of
  1.    quorum sensing
  2.    Liebig's law of the minimum
  3.    Heisenberg's principle of uncertainty
  4.    Shelford's law of tolerance
 Discuss Question
Answer: Option B. -> Liebig's law of the minimum
Question 12. The straightforward method of binary fission explains how bacteria
  1.    grow in nutrient agar
  2.    evolve
  3.    reproduce
  4.    move
 Discuss Question
Answer: Option C. -> reproduce
Question 13. Which of the following organisms typically get their carbon for biosynthesis from carbon dioxide?
  1.    Anaerobic, glucose-respiring bacteria (anaerobic respiration)
  2.    Aerobic, glucose-respiring bacteria (aerobic respiration)
  3.    Glucose-fermenting bacteria (fermentation)
  4.    Ammonia-oxidizing bacteria (chemolithotrophic bacteria)
 Discuss Question
Answer: Option D. -> Ammonia-oxidizing bacteria (chemolithotrophic bacteria)
Question 14. An organism that expends energy to grow in a habitat with a low water activity in order to maintain internal solute concentrations to retain water is
  1.    osmotolerant
  2.    alkalophile
  3.    acidophile
  4.    aerotolerant anaerobe
 Discuss Question
Answer: Option A. -> osmotolerant
Question 15. The growth is normally expressed as __________ in turbidimetric measurement
  1.    cfu/ml
  2.    optical density
  3.    cells per ml
  4.    mg N2 /ml
 Discuss Question
Answer: Option B. -> optical density
Question 16. An organism has an optimal growth rate when the hydrogen ion concentration is very high. This organism is
  1.    acidophile
  2.    osmotolerant
  3.    neutrophile
  4.    aerotolerant anaerobe
 Discuss Question
Answer: Option A. -> acidophile
Question 17. Bacteria and fungi multiply best
  1.    below 16°C
  2.    above 38°C
  3.    none of these
  4.    between 16-38°C
 Discuss Question
Answer: Option D. -> between 16-38°C
Question 18. The equation used to obtain bacterial population by binary fission is
  1.    log N/No = (0.3010) n
  2.    log(N/No) = nlog 2
  3.    N = No2n
  4.    All of these
 Discuss Question
Answer: Option D. -> All of these
Question 19. Organisms, using organic compounds as electron donors are called
  1.    phototrophs
  2.    lithotrophs
  3.    chemotrophs
  4.    organotrophs
 Discuss Question
Answer: Option D. -> organotrophs
Question 20. Which of the following procedures uses a photocell to measure absorbance of a culture to regulate the flow of culture media?
  1.    Petroff-Hausser chamber
  2.    Hemostat
  3.    Trubidostat
  4.    Coulter Counter
 Discuss Question
Answer: Option C. -> Trubidostat

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

Pie Chart - Test Paper 1 Data Interpretation Reasoning & DI
Tabulation - Test Paper 2 Data Interpretation Reasoning & DI
Test Paper 1 Direction Sense Test Reasoning & DI
ICA , RDIC,GFM Free Modal Test Paper - Non - Technical Branch Old Syllabus 2022 - SAIL Junior Officer E0
GFM Combined 1 Free Revision Test SAIL JO E-0