Tag: health and hygiene

Questions Related to health and hygiene

A bacterial population contains a mixture of wild type and leucine auxotrophs. From this mixture, the leucine auxotrophs can be enriched by growing the mixture in minimal medium supplemented with 

biology health and hygiene minerals and vitamins nutrition and diet role of various nutrients

  1. leucine

  2. penicillin

  3. leucine and penicillin

  4. chloramphenicol

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Correct Option: A

Our hair and nails are composed of _________.

biology health and hygiene minerals and vitamins nutrition and diet role of various nutrients

  1. Carbohydrates

  2. Proteins

  3. Vitamins

  4. Fat

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Correct Option: B
Explanation:
Hair and nails are made up of dead squamous cells which are called as keratinocytes. It consists of a protein known as keratin and is present in hair, nails and skin. It helps in protection as composed of intact cells.
So, the correct answer is 'Proteins'.