Key Component Not Used in Western Blotting: Agarose Gel Electrophoresis
Which one of the following is not used during Western blotting?
A. Secondary antibody with a conjugated detection system
B. Agarose gel electrophoresis
C. Non-fat dry milk
D. Primary antibody that recognizes the protein
Which Component Is Not Used in Western Blotting?
Western blotting is a widely used molecular biology technique for detecting specific proteins in a sample. The process involves protein separation, transfer to a membrane, and antibody-based detection.
The correct answer is:
✅ B. Agarose gel electrophoresis
Western blotting uses polyacrylamide gel electrophoresis (PAGE), not agarose gel electrophoresis, for protein separation.
Key Components Used in Western Blotting:
✔ A. Secondary Antibody with a Conjugated Detection System
- Secondary antibodies are used to bind to primary antibodies for enhanced detection.
- Often conjugated with enzymes (e.g., HRP – horseradish peroxidase) or fluorescent markers.
✔ C. Non-Fat Dry Milk
- Used as a blocking agent to prevent non-specific antibody binding.
- Helps reduce background noise and improve specificity.
✔ D. Primary Antibody That Recognizes the Protein
- The primary antibody is specific to the target protein.
- It binds directly to the protein of interest before secondary antibody application.
Why Is Agarose Gel Electrophoresis Not Used?
🚫 Agarose gels are used for separating nucleic acids (DNA/RNA), not proteins.
🚫 Proteins are separated based on size using SDS-PAGE (sodium dodecyl sulfate-polyacrylamide gel electrophoresis).
🚫 Agarose pores are too large for effective protein resolution, making it unsuitable for Western blotting.
Conclusion:
Agarose gel electrophoresis is not used in Western blotting because proteins require SDS-PAGE for proper separation. Meanwhile, secondary antibodies, blocking agents like non-fat dry milk, and primary antibodies are essential for protein detection in this powerful technique.
88 Comments
Suman bhakar
March 3, 2025Done
Ujjwal
March 3, 2025Done 👍
Akshay mahawar
March 3, 2025Done 👍
Arushi
March 3, 2025👍👍
Jyoti Meena
March 3, 2025Done
Abhilasha
March 3, 2025Done
Priyam choudhary
March 3, 2025👍
Priti khandal
March 3, 2025👍👍
Prami Masih
March 4, 2025Okay sir
Lokesh kumawat
March 5, 2025Done
VIKRAM GAHLOT
March 5, 2025Nice sir
Kabeer Narwal
March 18, 2025👍👍
Akshita
August 14, 2025Agarose gel electrophoresis
Khushi Vaishnav
August 17, 2025Agarose gel electrophoresis
Bhawna Choudhary
August 21, 2025Agrose gel electrophoresis is not used because agrose gel is used to separate nucleic acid(DNA&RNA) not protein
Protein are separated using SDS- PAGE
Meenakshi Choudhary
August 18, 2025Agarose gel electrophoresis
Swati Choudhary
August 19, 2025Agarose gel electrophoresis is not used during western blotting among all four.
Dipti Sharma
August 20, 2025Agarose gel electrophoresis
Khushi Mehra
August 20, 2025In Western blotting, gel electrophoresis is run vertically that’s why during western blotting, PAGE is used instead of agarose gel electrophoresis.
shruti sharma
August 20, 2025option b
Mohd juber Ali
August 20, 2025Option (b)
All option is right for western blotting
Such as . Primary antibody binds with particular protein and secondary ab binds with primary antibody ak secondary ab bhot sare secondary se bind rhti h (radiolabel) western blot is PAge tq. Not agarose
Anurag Giri
August 20, 2025Ans b
Western blotting uses polyacrylamide gel electrophoresis (PAGE), not agarose gel electrophoresis, for protein separation
Nilofar Khan
August 20, 2025Correct answer is b
Varsha Tatla
August 20, 2025Western blotting is a SDS page tech.
Aman Choudhary
August 20, 2025Option B is correct
Page is used in western blotting not agarose
Aafreen
August 20, 2025Western blotting uses polyacrylamide gel electrophoresis (PAGE), not agarose gel electrophoresis, for protein separation hence B is correct answer
Surbhi Rajawat
August 20, 2025In protein detection that is western blotting we use PAGE and not Agarose gel because of its large pore size it is not very effective
Priya choudhary
August 20, 2025Right answer is option b, because of this isme gel electrophoresis ka use hota h protein ko alag krne k liye but poliacrilamide gel ka na ki agarose gel ka
Priya dhakad
August 20, 2025Western blotting is used polyacrylamide gel electrophoresis not agarose gel
Deepika Sheoran
August 20, 2025Option b is correct answer
Because Not Agrose gel electrophoresis used western blotting uses PAGE.
anjani sharma
August 20, 2025In Western blotting we use PAGE instead of agarose gel electrophoresis
Kavita choudhary
August 20, 2025Agros gel electrophoresis is not used to Protein separation
Neelam Sharma
August 20, 2025Agarose gel electrophoresis
Sneha .......
August 21, 2025Agrose gel electrophoresis
Neha
August 21, 2025Agrose gel electrophoresis not used in western blotting ,in western blotting we use sds gel
Komal Sharma
August 21, 2025Western blotting uses polyacrylamide gel electrophoresis (PAGE), not agarose gel electrophoresis, for protein separation..
Santosh Saini
August 21, 2025Agarose gel electrophoresis uses for separation of DNA , not used for protein separation
Khushi Pareek
August 21, 2025SDS PAGE is used in western blotting
Khushi Vaishnav
August 21, 2025Western blotting uses polyacrylamide gel electrophoresis (PAGE), not agarose gel electrophoresis, for protein separation.
Sakshi yadav
August 21, 2025Agrose gel electrophoresis
Meera Gurjar
August 21, 2025Agarose gel electrophoresis
Simran Saini
August 21, 2025Agarose gel electrophoresis.
Avni
August 21, 2025Agarose gel electrophoresis is not used in western blotting
Payal Gaur
August 21, 2025PAGE used in Western blotting not Agarose gel electrophoresis
Divya rani
August 21, 2025Agarose gel is used in Southern blotting and northern blotting not in Western blotting there we use sds page
Sakshi Kanwar
August 22, 2025Option B instead agarose gel SDS PAGE is used provide uniform negative charge to protein
Soniya Shekhawat
August 22, 2025In western blotting the protein are be separated on the basis of size in by SDS -PAGE not by agrose gel electrophoresis.
karishma
August 22, 2025agarose gel as in western blotting sds page is used
Parul Yadav
August 22, 2025Western Blotting uses Polyacrylamide gel electrophoresis not agarose gel electrophoresis for protein separation.
Arushi
August 22, 2025Agarose gel electrophoresis
Kirti agarwal
August 23, 2025Agarose gel electrophoresis
Priya khandal
August 23, 2025Agerose gel electrophoresis
Ankita Pareek
August 23, 2025Gel electrophoresis is not used for separation of protein in western blotting
PAGE is used for separation of protein in W.B
Akshita Jangid
August 23, 2025In western Blotting PAGE is uses not agarose gel electrophoresis for separation of protein
Bharti Yadav
August 23, 2025PAGE is used in western blotting not agarose gel .
Divya Mandhania
August 24, 2025Agarose gel is not used for separation of proteins in western blotting ……..page is used for separation of protein in western blotting
Yogita
August 24, 2025Agerose gel electrophoresis
Urmi
August 24, 2025Gel electrophoresis is correct answer because it helps to seperate the dna and rna
Aakanksha Sharma
August 24, 2025Agarose gel electrophoresis
Himanshi
August 24, 2025Agarose gel electrophoresis
Anisha Beniwal
August 24, 2025Agarose gel electrophoresis as the western blotting uses page
AKANKSHA RAJPUT
August 24, 2025B IS CORRECT
Shivani
August 24, 2025Agarose gel electrophoresis is not used in Western blotting because it separates DNA and RNA not protein.
Bhavana kankhedia
August 24, 2025Agarose gel electrophoresis
Ayush Dubey
August 24, 2025Agarose gels are used for separating nucleic acids (DNA/RNA), not proteins
Kajal
August 24, 2025We don’t use agrose gel in Western blotting instead we use PAGE n agrose gel is used in northern and southern blotting.
Tanvi Panwar
August 24, 2025Agarose gel electrophoresis is used in Nucleic acids while PAGE are used for proteins.
Priyanka Verma
August 24, 2025Gel electrophoresis is the right answer
Sonam Saini
August 24, 2025Agarose gel electrophoresis ka upyog nucleic acid mein kiya jata Hai jabki protein ke liye Kiya jata hai
Surendra Doodi
August 24, 2025Agarose gel electrophoresis use for southern blotting not western blotting
sakshi khatri
August 24, 2025agarose gel electrophoresis
Falguni Prakash
August 24, 2025PAGE gel is used
Ajay Sharma
August 25, 2025agarose is not used in western
Kajal
August 25, 2025Agarose gel electrophoresis
Manisha choudhary
August 26, 2025Agarose gel western blotting m use nhi krte h
Priyanka Meena
August 26, 2025Agarose gel electrophoresis
Muskan Yadav
August 26, 2025Agarose gel electrophoresis
Western blotting uses polyacrylamide gel electrophoresis (PAGE), not agarose gel Electrophoresis.
Savita Garwa
August 27, 2025In Western blotting, gel electrophoresis is run vertically that’s why during western blotting, PAGE is used instead of agarose gel electrophoresis.
Kanica Sunwalka
August 28, 2025agarose gel electrophoresis
Shriyanshi verma
August 30, 2025Agarose gel electrophoresis
Alec
August 30, 2025agarose gel electrophoresis is not used in western blotting.
Pratibha Jain
August 30, 2025The correct answer is option (B)
Agarose gel electrophoresis
Western blotting uses polyacrylamide gel electrophoresis (PAGE), not agarose gel electrophoresis, for protein separation.
Anisha jakhar
August 31, 2025Agarose gel electrophoresis
Shobha Kanwar
August 31, 2025Agarose gel electrophoresis is not used during western blotting among all four.
Shobha Kanwar
August 31, 2025Western blotting is used polyacrylamide gel electrophoresis not agarose gel
Ajay Sharma
September 2, 2025Western blotting uses page not agarose
Konika
September 10, 2025Agarose gel electrophoresis
Deepika sheoran
November 15, 2025Option b is correct