Q.38 Consider two bodies with equal masses of 1012 kg each and R distance apart. Let G be thegravitational constant and V0 be a constant with dimensions of energy. Which […]
Author: admin
CSIR NET Life Science Previous Year Questions and Solution on EXTENSION OF MENDELIAN PRINCIPLES (62)
IIT JAM Biotechnology Previous Year Question Paper 2020 –Video Solution
Which Curve/Straight Line Equation Passes Through Origin?
Q.37 Which of the following curve/straight line equations will pass through the origin whenplotted on a graph? (A) -x/2+y/2=0 (B)1+y+x=1(C)xy=1(D)2y-2x+2=0 Option (A) passes through the origin. A curve or line passes […]
IIT JAM Biotechnology Previous Year Question Paper 2020 –Video Solution
Protozoa are Unicellular
Q.36 Protozoa are(A) unicellular (B) multicellular (C) eukaryotic (D) prokaryotic Protozoa are unicellular eukaryotic microorganisms belonging to the Kingdom Protista. The correct answer to the multiple-choice question is (A) unicellular, […]
IIT JAM Biotechnology Previous Year Question Paper 2020 –Video Solution
Wave-Particle Duality of Light
Q.35 Which of the following is(are) CORRECT?(A) Light has wave nature only(B) Light can have both wave and particle nature(C) Photo electric effect shows that light can behave like particles(D) […]
IIT JAM Biotechnology Previous Year Question Paper 2020 –Video Solution
DNA and RNA Acidic Nature Due to Phosphate Groups
Q.34 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 DNA and RNA are acidic in […]
IIT JAM Biotechnology Previous Year Question Paper 2020 –Video Solution
Activation of Cytotoxic T Cells
Q.33 Which of the following is(are) involved in the activation of cytotoxic T cells?(A) MHC I(B) FcR(C) T cell receptor(D) CTLA 4 MHC class I (MHC I), the T cell […]
IIT JAM Biotechnology Previous Year Question Paper 2020 –Video Solution
Photosynthesis in C3, C4, and CAM Plants
Q.32 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 of carbon […]
IIT JAM Biotechnology Previous Year Question Paper 2020 –Video Solution
Which Compounds are Auxins?
Q.31 Which of the following is(are) auxins?(A) 1-Naphthaleneacetic acid(B) Indole-3-butyric acid(C) 2,4-Dichlorophenoxyacetic acid(D) Indole-3-acetic acid All options (A), (B), (C), and (D) are auxins, commonly tested in CSIR NET Life […]
IIT JAM Biotechnology Previous Year Question Paper 2020 –Video Solution
IR band at 1715 cm⁻¹ and NMR triplet–quartet for C₅H₁₀O
Q.30 IR spectrum of a compound C5H10O shows a band at 1715 cm^–1. The same compound showedtwo signals, a triplet and a quartet, in its NMR spectrum. Identify the compound […]
![Q.29 Determine the correctness or otherwise of the following Assertion [a] and the Reason [r]. Assertion [a]: lac operon is an inducible operon. Reason [r]: lac operon is not induced when the repressor protein remains bound to operator DNA sequence. (A) Both [a] and [r] are true and [r] is the correct reason for [a] (B) Both [a] and [r] are true but [r] is not the correct reason for [a] (C) Both [a] and [r] are false (D) [a] is true but [r] is false](https://www.letstalkacademy.com/wp-content/uploads/2025/12/slide_29-9.jpg)
IIT JAM Biotechnology Previous Year Question Paper 2020 –Video Solution
Lac Operon is Inducible Operon
Q.29 Determine the correctness or otherwise of the following Assertion [a] and the Reason [r].Assertion [a]: lac operon is an inducible operon.Reason [r]: lac operon is not induced when the […]
