Enzymes accelerate a reaction by which one of the following strategies? (1) Decreasing energy required to form the transition state. (2) Increasing kinetic energy of the substrate. (3) Increasing the […]
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CSIR NET Life Science Previous Year Questions on METHODS IN BIOLOGY – Video and Text Solutions
Calculating Limit of Resolution in a Compound Microscope
An observation was being made under a compound microscope using light of 500 nm wave length. The refractive index of the observation medium was 1.5. The Sinα of the lens […]
CSIR NET Life Science Previous Year Questions on METHODS IN BIOLOGY – Video and Text Solutions
Improving the Resolution of a Microscope
The most important property of any microscope is its resolution (D) and can be calculated from the formula D = where D is, minimum distance between two distinguishable objects, A. […]
CSIR NET Life Science Previous Year Questions on METHODS IN BIOLOGY – Video and Text Solutions
The Resolving Power of a Bright Field Microscope
Which one of the following factors will NOT have any impact on the resolving power of a bright field microscope? (1) Color of light (2) Intensity of light (3) Angle […]
CSIR NET Life Science Previous Year Questions and Solutions Spectroscopy
Understanding the Units of Molar Extinction Coefficient (ε)
The units of molar extinction coefficient are (1) L mol-1 crn-1 (2) cm-1 mg ml-1 (3) mol-1 mm (4) mol cm ml-1 Correct Answer: (1) L mol⁻¹ cm⁻¹ Topic Explanation: […]
CSIR NET Life Science Previous Year Questions and Solutions Spectroscopy
Calculating Protein Concentration Using UV Absorbance and Molar Extinction Coefficients
A protein has one tryptophan and one, tyrosine in its sequence. Assume molar extinction coefficients at 280 nm of tryptophan and tyrosine as 3000 and 1500 M-1cm-l, respectively. What would […]
CSIR NET Life Science Previous Year Questions and Solutions Spectroscopy
Relationship Between Absorbance and Transmission in Spectrophotometry
What will be the percentage transmission when absorbance is 1, 2 and 3, respectively? (1) 10, 1, 0.1 (2) 1, 10, 100, (3) 0.2, 0.1, 0 (4) 20, 10, 0 […]
CSIR NET Life Science Previous Year Questions and Solutions Spectroscopy
UV Spectroscopy for most sensitive label-free Protein Quantification
Which one of the methods listed below is the most sensitive label-free quantification method for proteins (1) UV spectroscopy (2) Infra-red spectroscopy (3) Raman spectroscopy (4) 13C content of protein […]
CSIR NET Life Science Previous Year Questions and Solutions Spectroscopy
Intrinsic Fluorescence of Protein Is Due to Aromatic amino acids Tryptophan Tyrosine and Phenylalanine
Which one of the following would contribute to intrinsic fluorescence to a protein? (1) aromatic amino acids (2) disulfide bonds (3) charged amino acids (4) branched chain amino acids […]
CSIR NET LIFE SCIENCE FREE TEST DEVELOPMENTAL BIOLOGY
CSIR NET Life Science Free Test on Morphogenesis and Organogenesis in Plants
CSIR NET Life Science Free Test on Morphogenesis and Organogenesis in Plants by Let’s Talk Academy Master Plant Development with a Free CSIR NET Life Science Test (Unit 5 […]
