Tag: DBT JRF PYQ 2020

The malarial parasite that has caused recent outbreaks of Monkey malaria in humans is 1. Plasmodium berghei 2. Plasmodium vivax 3. Plasmodium knowlesi 4. Plasmodium malariae Introduction In recent years, […]

The primary structure of a protein is stabilized by 1. the angle formed between plane ABD and plane ACD 2. covalent bond 3. ionic bond 4. hydrogen bonds   Introduction […]

The biological sample used for diagnosis of Giardiasis is 1. blood 2. sputum 3. urine 4. stool Introduction Giardiasis is a common intestinal parasitic infection caused by Giardia lamblia, a […]

Which of the following floral whorls are absent in agamous (ag) mutant of Arabidopsis? 1. petals and stamens 2. sepals and petals 3. stamens and carpels 4. sepals and carpels […]

In the DNA helix, the GC and AT base pairs 1. stack on top of each other, parallel to the helix axis 2. stack on top of each other, perpendicular […]

The mucopolysaccharide hyaluronic acid is composed of 1. N-acetyl D-glucosamine only 2. D-glucuronic acid only 3. neither N-acetyl D-glucosamine nor D-glucuronic acid 4. both N-acetyl D-glucosamine and D-glucuronic acid Introduction […]

In the cloverleaf structure of tRNA, the cognate amino acid is attached at 1. acceptor stem 2. T loop 3. anticodon arm 4. D loop   Introduction In the complex […]

Which post-translational modification is observed most commonly in signal transduction? 1. Nitrosylation 2. phosphorylation 3. carbonylation 4. acetylation Introduction to Post-Translational Modifications Post-translational modifications (PTMs) refer to the chemical changes […]

Wetlands are very rich and diverse ecosystems and must be preserved. Which convention signed in Iran protects this specific ecosystem (wetlands) on a global basis? 1. Ramsar Convention 2 Vienna […]

Which one of the following can be extended by Klenow enzyme upon addition of dNTPs and Mg 2+? 1. restriction fragment with a 5′ overhang 2. restriction fragment with a […]