Biology
Is tinned and sealed food always safe to eat? Give reasons in support of your answer.
Answer
No, tinned and sealed food are not always safe to eat as it may contain harmful bacteria like Clostridium botulinum that causes food poisoning. Clostridium botulinum releases toxins under low-oxygen conditions. These toxins are very lethal and can block nerve functions leading to muscular and respiratory paralysis.
Moreover, the chemicals used in the inner coating of the container can be harmful for humans.
Related Questions
Briefly describe how nitrogen of the atmosphere is converted to nitrates by leguminous plants.
State how the nitrates in the soil get converted to nitrogen of the atmosphere.
Draw a diagram showing the Nitrogen cycle and answer the following questions.
(a) Define the terms:
- Nitrification
- Denitrification
(b) Distinguish between biological nitrogen fixation and industrial nitrogen fixation.
(c) Name the kind of relationship that exists between Rhizobium and leguminous plants.
Would there be any bacteria in an aquarium ?
(a) A balanced aquarium contains certain animals as well as some plants. How many kinds of animals can you make out in the aquarium shown here. Name any two such animals.
(b) Do you think there would be some bacteria in it? If so in which part of the aquarium would they be occurring in abundance and what for?