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MCQs

Total Questions : 65 | Page 3 of 7 pages
Question 21. Beyond a certain concentration range the accumulation kinetics is not altered.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option A. -> True
Answer: (a).True
Question 22. Upon which of the following factors the accumulation kinetics depend?
  1.    Accumulation phase
  2.    Steady-state
  3.    Elimination phase
  4.    Toxicant concentration
 Discuss Question
Answer: Option D. -> Toxicant concentration
Answer: (d).Toxicant concentration
Question 23. The soil humic substances make complexes with metal ions adversely affecting _______________
  1.    Membrane permeability rate
  2.    Bioaccumulation
  3.    Rate of active transport
  4.    Rate of active transport
 Discuss Question
Answer: Option B. -> Bioaccumulation
Answer: (b).Bioaccumulation
Question 24. What does ∆t depicts in the given formula: C = Cₘₐₓ Δt/B + Δt?
  1.    t-t₀
  2.    t₀-t
  3.    C-C₀
  4.    C₀-C
 Discuss Question
Answer: Option A. -> t-t₀
Answer: (a).t-t₀
Question 25. Which of the environmental condition is not favorable of the toxicant accumulation?
  1.    Nutrient load
  2.    Temperature
  3.    Biochemical degradation
  4.    pH
 Discuss Question
Answer: Option C. -> Biochemical degradation
Answer: (c).Biochemical degradation
Question 26. Which of the following factors can influence the physio chemistry of membrane lipids, hence, affecting the rate of Bio accumulation?
  1.    Temperature
  2.    Pressure
  3.    Food type
  4.    Size of animal
 Discuss Question
Answer: Option A. -> Temperature
Answer: (a).Temperature
Question 27. Metabolically active organisms accumulate more amount of toxicant.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option A. -> True
Answer: (a).True
Question 28. Sometimes bio accumulation depends upon the tissue organization and composition.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option A. -> True
Answer: (a).True
Question 29. The organs with high lipid content can accumulate more number of lipophilic toxicant, like in __________
  1.    Liver
  2.    Blood
  3.    Heart
  4.    Kidney
 Discuss Question
Answer: Option A. -> Liver
Answer: (a).Liver
Question 30. Elimination of one species affects the energy transfer in the biota.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option B. -> False
Answer: (b).False

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