This set of Environmental Biotechnology Interview Questions and Answers for freshers focuses on “Bioaccumulation Relationship with Chemical Structure”.
1. The process of building up of harmful chemicals inside a living organism is called as _______
a) Bio-accumulation
b) Bio-leaching
c) Bio-remediation
d) Bio-fortification
View Answer
Explanation: Bio-accumulation is the process in which harmful chemicals builds up inside a living organism, Bio-remediation is a process used to treat contaminated media using microbial methods, bio-fortification is a process which is used to increase the nutritional quality of crops, bio-leaching is a process used for extraction of metals.
2. The organism is at a risk if the amount of toxin being absorbed is more than that being excreted out of the body.
a) True
b) False
View Answer
Explanation: If the amount of toxins that is being bio accumulated in the body i.e it is being absorbed is more than that being excreted out of the body, the organism is at a potential risk.
3. What type of chemicals get accumulated in an organism during bio-accumulation process?
a) Pesticides or organic chemicals
b) Sodium
c) Fe
d) Potassium
View Answer
Explanation: Harmful chemicals like Pesticides or organic chemicals gets accumulated in an organism during bio-accumulation process, where as Iron is present as a natural constituency in the blood of an organism, sodium and Potassium can be found in an organism.
4. What happens when toxins gets accumulated inside the body of an organism?
a) Bilirubin poisoning
b) Steroids poisoning
c) Bile salts poisoning
d) Chronic poisoning
View Answer
Explanation: Chronic poisoning is the term used denote the potential risk of an organism in which a particular or a group of toxins get accumulated inside the body of an organism, whereas Bilirubin poisoning, Steroids poisoning and Bile salts poisoning is not associated with bio accumulation.
5. What is the following step is not included in the bio accumulation process?
a) Storage
b) Elimination
c) Uptake
d) Filtration
View Answer
Explanation: Filtration is a method which is generally used to get rid of contamination, Storage, Elimination, Uptake are the steps that are included or are responsible for bio-accumulation in the body of an organism.
6. Which of the following is the source through which toxic chemicals enter the organism’s body?
a) Contaminated air
b) Contaminated water
c) Contaminated food
d) Sterile water
View Answer
Explanation: Toxic chemicals enter the organism’s body through Contaminated air, contaminated water and contaminated food but sterile water doesn’t contain any contaminants and doesn’t have the potency to cause bio accumulation.
7. The harmful toxic compounds from the environment gets deposited in an organism within _____________
a) Trophic level
b) Parabens
c) Oxygen
d) Nitrogen
View Answer
Explanation: The harmful pollutants and toxic compounds in the environment gets accumulated within the body of an organism within the Trophic level, whereas Paraben is a neurotoxin compound which is carcinogenic to human body and O2 and N2 are not harmful to humans.
8. The harmful toxic compounds get accumulated within the first organism in the ___________
a) Gypsum
b) Food chain
c) Xenoestrogen
d) Oxalic acid
View Answer
Explanation: In a food chain, the harmful toxic compounds get accumulated within the first organism in a trophic level, it is usually the first organism, the Xenoestrogen is a hormone that have similar functions to natural endogenic estrogen produced by the body of an organism but are chemically different and synthetically administered, Gypsum is the by product of the certain acids like Citric acid, whereas, the byproduct i.e. gypsum is used fro sodic soil reclamation.
9. Bio accumulation is the concentration of pollutant across the food chain.
a) True
b) False
View Answer
Explanation: Bio magnification is the concentration of pollutant across the food chain whereas Bio accumulation is the accumulation of pollutant in the first organism of the food chain and not entire the food chain.
10. The type of environmental pollutants that remain in the environment for a long time period is called as Persistent pollutant.
a) True
b) False
View Answer
Explanation: The type of environmental pollutants that remain in the environment for a long time period is called as Persistent pollutant, those that doesn’t degrade with time and dissolve in fats.
11. The type of environmental pollutants that remain in the environment for a long time period is called as short-lived pollutant.
a) True
b) False
View Answer
Explanation: The type of environmental pollutants that are easily degraded in the environment at their places and do not remain in the environment for a long time period is called as short-lived pollutant.
12. Sea foods are the major source of bio-accumulation in humans.
a) True
b) False
View Answer
Explanation: When humans consume sea foods which has already taken up toxic chemicals from the environment it gets accumulated inside the organism as it the major food staple in humans.
Sanfoundry Global Education & Learning Series – Environmental Biotechnology.
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