6. What type of chromatography can be used to isolate mRNA using a column of oligo (dT)-cellulose? A. Partition chromatography B. Ion-exchange chromatography C. Affinity chromatography D. Adsorption chromatography Oligo(dT)-cellulose […]
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Size Exclusion Chromatography Column
5. Two proteins having a slight difference in size are subjected to size-exclusion chromatography and partially flow from each other. If longer columns show no improvement in separation, it is […]
Best Technique to Separate Proteins
4. Protein A and protein B have the same molecular weight and isoelectric point but differ in amino acid composition. Which of the following techniques is best to separate them? […]
Reverse Phase Chromatography Elution Order
3. Proteins A, B and C have decreasing average hydrophobicity respectively and the same molecular mass but different amino acid compositions. If the mixture is subjected to reverse-phase chromatography using […]
Liquid Chromatography Mass Spectrometry
2. Liquid Chromatography Mass Spectrometry (LCMS) is characterized by: A. Allows fast separation and analysis of proteins B. Separates proteins from metals C. Separates trypsin from peptides D. None of […]
How to Purify Proteins at Physiological pH
1. How can two proteins be purified at physiological pH if both have the same mass but the pI of one is 6.5 and different from the other? A. Ion-exchange […]
Incorrect Statements in C₄ Photosynthesis
Q.60 Which two of the following are the INCORRECT statements? P. All plants fix CO2 by the action of ribulose biphosphate carboxylase. The reaction occurs in the bundle sheath of […]
Correct Matching of Plant Alkaloids, Their Sources and Uses
Q.59 Identify the correct matching by taking one item from each column Column – I Column – II Column – III P. Morphine Q. Nicotine R. Atropine S. Vinblastine 1. […]
Nondisjunction in Meiosis
Q.58 Which two of the following are the CORRECT statements ? P. Nondisjunction in the parental meiosis is not essential to produce diploid organisms Q. Nondisjunction in the parental meiosis […]
Genetic Linkage and Test Cross
Q.57 A plant of genotype GGHH is crossed with another plant of the genotype gghh. If the F1 is test crossed, what percentage (%) of the test cross progeny will […]


