MCQ on Plant Lectins




Lectins are proteins found in plants, animals, and microorganisms that bind specifically to carbohydrates. They play roles in cell recognition, immune response modulation, and various biological processes by interacting with sugars on cell surfaces or glycoconjugates. This is an MCQ on Lectins from Plants and its Applications.

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1. 
What are lectins?

2. 
Which of the following best describes the primary function of lectins?

3. 
In which of the following domains of life are lectins commonly found?

4. 
Which organelle in plant cells is known to contain lectins involved in protein glycosylation?

5. 
What is the name of the lectin found in red kidney beans (Phaseolus vulgaris) that can be toxic if not properly cooked?

6. 
How do lectins facilitate cell-cell interactions and adhesion?

7. 
Which type of lectins are commonly found on the surface of red blood cells and play a role in blood typing?

8. 
What is the main carbohydrate-binding motif or structure in many lectins?

9. 
Which of the following is NOT a known function of lectins in nature?

10. 
Lectins are often used in laboratory techniques to study glycoproteins. What is the technique commonly used for this purpose?

11. 
Which type of lectins specifically bind to and agglutinate red blood cells from different blood groups?

12. 
How can lectins play a role in plant defense against herbivores and pathogens?

13. 
What is the name of the lectin found in castor beans (Ricinus communis) that is highly toxic due to its ability to inhibit protein synthesis?

14. 
Which type of lectins play a crucial role in the immune system by recognizing and binding to pathogen-associated carbohydrates?

15. 
In lectin-carbohydrate interactions, what term describes the specific carbohydrate structure that a lectin can bind to with high affinity?

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mcq on lectins






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