Question

Identify the incorrect pair.

• A. Drugs - Ricin
• B. Alkaloids - Codeine
• C. Toxin - Abrin
• D. Lectins - Concanavalin A

Answer 1

The Correct Option is A

To identify the incorrect pair from the given options, let's evaluate each one based on known biological classifications:

1. Drugs - Ricin:

   Ricin is not classified as a drug. It is actually a highly toxic protein derived from the seeds of the castor oil plant (Ricinus communis). Ricin is a toxin and should not be associated with medicinal drugs. Hence, this pair is incorrect.

2. Alkaloids - Codeine:

   Codeine is indeed an alkaloid. It is an opiate used to treat pain, cough, and diarrhea. Alkaloids are naturally occurring compounds mostly containing basic nitrogen atoms, and codeine fits this category. Therefore, this pair is correct.

3. Toxin - Abrin:

   Abrin is a potent toxin that comes from the seeds of the plant Abrus precatorius, commonly known as the rosary pea. It is similar in toxicity to ricin, making this classification correct. Thus, this pair is correct.

4. Lectins - Concanavalin A:

   Concanavalin A is indeed a lectin, which is a type of protein that binds to carbohydrates. It is extracted from the jack bean (Canavalia ensiformis). Therefore, this pair is correct.

Therefore, the incorrect pair is Drugs - Ricin.