Abrin and ricin are toxins. The drugs include curcumin, etc. Ricin and abrin are potent biological toxins that are derived from plant sources (castor beans and rosary peas, respectively). More is known about ricin toxicity; however, abrin toxicity is similar in its mechanism of action. In the body, these toxins inhibit protein synthesis leading to cell death.
Identify the incorrect pair.
NEET UG 2021 — Botany Biomolecules
2021mcqeasy
Identify the incorrect pair.
Official previous-year question
Held on 30 Apr 2021 · Verified 9 Jul 2026.
Options
- A
Alkaloids - Codeine
- B
Toxin - Abrin
- C
Lectins - Concanavalin A
- D
Drugs - Ricin
Did you get this right?
Sign in to track your attempts and accuracy.
Your note
Sign in to keep a private note on this question. Nothing you write is ever public.
NEET UG Biomolecules in other years
More NEET UG Biomolecules questions
Lecithin, a small molecular weight organic compound found in living tissues, is an example of:
2024medium
Ligases is a class of enzymes responsible for catalysing the linking together of two compounds. Which of the following bonds is not catalysed by it?
2024easy
Match List-I with List-II. \begin{array}{|l|l|l|l|}\hline & List-I & & List-II \\\hline A. & Primary structure of protein & I. & Human haemoglobin \\\hline B. & Secondary structure of protein & II. & Disulphide bonds \\\hline C. & Tertiary structure of protein & III. & Polypeptide chain \\\hline D. & Quaternary structure of protein & IV. & Alpha helix and \beta sheet \\\hline\end{array} Choose the correct answer from the options given below :
2024medium
The cofactor of the enzyme carboxypeptidase is:
2024medium
Match List-I with List-II  Choose the correct answer from the options given below.
2024medium
Other Botany topics for NEET UG
Keep practicing Biomolecules
Work through every NEET UG Biomolecules PYQ, year by year.