MPTET Biology Exam – April 15, 2025

1. Question 1: Which of the following is a human-made hybrid cereal crop?

   • A. Raphanobrassica
   • B. Triticale
   • C. Pomato
   • D. None of the above

   Correct Answer: B. Triticale

2. Question 2: Mutation induced by mutagenic agents is called:

   • A. Spontaneous mutation
   • B. Chemical mutation
   • C. Induced mutation
   • D. Chromosomal mutation

   Correct Answer: C. Induced mutation

3. Question 3: In which plant was sex-linked inheritance of sex chromosomes discovered?

   • A. Remex
   • B. Spherocephalus
   • C. Melandrium
   • D. Coccinia

   Correct Answer: C. Melandrium

4. Question 4: Which of the following is known as the 'biological scissors'?

   • A. Enzyme
   • B. Restriction endonuclease
   • C. Restriction exonuclease
   • D. Restriction DNAase

   Correct Answer: B. Restriction endonuclease

5. Question 5: In Northern blotting, RNase is separated by gel electrophoresis, and RNA bands are transferred to a membrane. Which of the following is used for this transfer?

   • A. Diethylaminoethyl
   • B. Diisobenzene
   • C. Diisobromine
   • D. None of the above

   Correct Answer: A. Diethylaminoethyl

6. Question 6: Which technique is used to determine the molecular weight of proteins?

   • A. Affinity chromatography
   • B. Thin-layer chromatography
   • C. Ion-exchange chromatography
   • D. Gel filtration chromatography

   Correct Answer: D. Gel filtration chromatography