Q.3 After how many cycles of polymerase chain reaction (PCR), the amplified product of required length is generated for the first time from a chromosomal DNA template? (A) 2 (B) […]
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IIT JAM Biotechnology Previous Year Question Paper 2025
Matrix Equation P + Pα΅ = I | Find Value of Ξ± (0 β€ Ξ± β€ Ο/2)
Q.2 If π = ( β πππ πΌ π πππΌ πππ πΌ π πππΌ) and π + π π = I, the value of Ξ± (0 β€ πΌ β€ πβ2) is (A) π/2 (B) […]
IIT JAM Biotechnology Previous Year Question Paper 2025
Porphyrin Ring (Tetrapyrrole) NOT Found In Hemocyanin
Q.1 The porphyrin ring (tetrapyrrole structure) is NOT found in functional (A) chlorophyll (B) hemoglobin (C) hemocyanin (D) leghemoglobin Porphyrin Ring Tetrapyrrole Structure Not Found In: MCQ Answer & Explanation […]
TIFR Previous Year Question Papers 2019 Biology With Answer Key Download
Thyroxin, Thyroidectomy, and Metabolism Control Experiment Explained
15. Thyroxin is the major hormone produced by the thyroid gland. Rats may be thyroidectomised (THX) either surgically or chemically. In an experiment designed to investigate the relationship of the […]
TIFR Previous Year Question Papers 2019 Biology With Answer Key Download
Bacterial Serial Dilution Problem Solved
14. How many bacteria were there in the initial 1 ml sample based on the dilution series shown below? The labels below the tube show the amount of liquid before […]
TIFR Previous Year Question Papers 2019 Biology With Answer Key Download
Konopka and Benzer Clock Mutants
13. Konopka and Benzer isolated mutant fruit flies that had abnormal daily (circadian) rhythms. The graph below shows the number of fruitflies that eclose each hour of the day (eclosion […]
TIFR Previous Year Question Papers 2019 Biology With Answer Key Download
Gut Microbiota and Serotonin Biosynthesis
12. The monoamine serotonin is synthesized mainly by enterochromaffin cells in the intestine. A mouse was treated with broad range of antibiotics for a week. After a week, both the […]
TIFR Previous Year Question Papers 2019 Biology With Answer Key Download
Batrachotoxin Poison Dart Frog Toxin Paralysis Mechanism
11. The poison dart frog, or poison arrow frog in the family Dendrobatidae carry Batrachotoxin, among other agents. The toxin irreversibly binds to voltage-gated sodium channels and keeps them open. […]
TIFR Previous Year Question Papers 2019 Biology With Answer Key Download
Which Lipid Cannot Form Bilayer By Itself
10. Which one of the following cannot form a bilayer by itself? a. Glycerophospholipids b. Cholesterol c. Phosphatidic acid d. Glycerolipids Cholesterol cannot form a bilayer by itself.Β This makes it […]
TIFR Previous Year Question Papers 2019 Biology With Answer Key Download
Why Human Red Blood Cells (RBCs) Cannot Be Grown in Cultures
9. Human red blood cells (RBCs) cannot be grown in cultures because a. RBCs require a steady oxygen supply b. RBCs are extremely fragile c. RBCs are terminally differentiated cells […]
