3. Infrared (IR) spectroscopy is used for determining certain aspects of the structure of organic compounds. Which of the following statement(s) is/are FALSE? (A) IR radiation induces electronic transitions (B) […]
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CSIR NET Life Science Previous Year Questions and Solution on EXTENSION OF MENDELIAN PRINCIPLES (62)
IIT JAM Biotechnology Previous Year Question paper Topic Cell Biology
Dosage Compensation in Mammals – X-Chromosome Inactivation
2. In mammals, females have two X chromosomes and males have one X chromosome. Equal expression of X-chromosome genes in both sexes is ensured by (A) Dosage compensation (B) Histone […]
IIT JAM Biotechnology Previous Year Question paper Topic Cell Biology
Cell Junctions and Their Functions
1. Match the cell junctions listed in Group A with their correct functions listed in Group B. Group A Group B (I) Adherens junction (P) Joins actin bundles in neighboring […]
IIT JAM Biotechnology Previous Year Question paper Topic Biochemistry
Glucose vs Fructose Explained
82. Which of the following is(are) CORRECT? (A) Both glucose and fructose have the same molecular formula (B) The positions of the oxygen and carbon differ in the structures of […]
IIT JAM Biotechnology Previous Year Question paper Topic Biochemistry
Why DNA and RNA Are Acidic – Role of Phosphate Groups
81. DNA and RNA are acidic in nature due to the presence of: (A) Pentose sugar (B) Nitrogenous bases (C) Phosphate groups (D) Large number of hydrogen bonds Why Are […]
IIT JAM Biotechnology Previous Year Question paper Topic Biochemistry
Photosynthesis in C₃, C₄ and CAM Plants Explained
80. Which of the following is(are) TRUE about photosynthesis? (A) In C₃ plants the first organic product of carbon fixation is 3-phosphoglycerate (B) In C₄ plants the first organic product […]
![79. Assertion [A]: The difference in the respective melting points of butter and coconut oil is caused by the degree of saturation of the corresponding fatty acid chain. Reason [R]: Unsaturated fatty acid chains become solid more easily because they are relatively straight and pack together more closely than saturated chains.](https://www.letstalkacademy.com/wp-content/uploads/2026/06/1782482036919-28d3b66b-2845-4f57-a8dd-cdc4734ea5c7_79.jpg)
IIT JAM Biotechnology Previous Year Question paper Topic Biochemistry
Difference Between Butter and Coconut Oil Melting Point
79. Assertion [A]: The difference in the respective melting points of butter and coconut oil is caused by the degree of saturation of the corresponding fatty acid chain. Reason [R]: […]
IIT JAM Biotechnology Previous Year Question paper Topic Biochemistry
Protein Concentration Calculation in Mammalian Cells
78. In a typical mammalian cell, the protein content is 20% of its net weight. If the density and volume of the cell are 1.2 g/mL and 4 × 10⁻⁹ […]
IIT JAM Biotechnology Previous Year Question paper Topic Biochemistry
Enzymes and Their Substrates Explained
77. Match the enzymes in Group I with the corresponding substrate in Group II: Group I (P) Amylase (Q) Pepsin (R) Lipase (S) Ribozyme Group II (1) Protein (2) Fat […]
IIT JAM Biotechnology Previous Year Question paper Topic Biochemistry
Vitamin Deficiency Diseases Explained
76. Match the deficiency conditions in Group I with the corresponding vitamin in Group II: Group I (P) Beriberi (Q) Scurvy (R) Birth defects (S) Night blindness Group II (1) […]
