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Roll No. [ TTTTTT] [ ] Total No. of Pages : 02
Total No. of Questions : 09
B.Sc.(BT) (2014 to 2017) (Sem.-3)
BIOPHYSICS
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Subject Code : BSBT-203
M.Code : 47036
Time : 3 Hrs. Max. Marks : 60
INSTRUCTION TO CANDIDATES :
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- SECTION-A is COMPULSORY consisting of TEN questions carrying TWO marks each.
- SECTION-B contains FIVE questions carrying FIVE marks each and students have to attempt ANY FOUR questions.
- SECTION-C contains THREE questions carrying TEN marks each and students have to attempt ANY TWO questions.
SECTION-A
- Explain briefly :
- How is blood pressure controlled in arteries?
- What is the total refractive power of eye?
- Define secondary messenger with example.
- What is a biophoton?
- What is a reciprocal lattice?
- What is z line in sarcomere?
- Give application of cobalt 60.
- Define atomic packing factor.
- Explain the term kinesiology.
- Define Bragg’s law.
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SECTION-B
- Explain the architecture of skeletal muscle and the sliding filament theory of muscle contraction. 5
- Explain the mechanism for the perception of sensory event. 5
- Explain the formation, emission and propagation of electromagnetic wave. 5
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- The half-life of U-238 undergoing a-decay is 4.5 x 10° years. What is the activity of 1g sample of U-238? 3
- What is a source of gamma rays? 2
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- The magnetic field in a plane electromagnetic wave is given by By = 2 x 10-7sin (0.5 x103x + 1.5 x 1011 t) T. What is the wavelength and frequency of the wave? 3
- What do you understand by term dual nature of light? 2
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SECTION-C
- Explain the factors affecting diffusion potential when a membrane is permeable to numerous different ion. Discuss resting membrane potential, gradient potential and action potential in a neuron. 3+7
- Discuss the biological and chemical aspect of radioisotope use including tracer principle, radiopharmaceuticals and mechanism of localization of radiopharmaceutical in a target organ. 10
- Explain the underlying physics of XRD technique. What factors determine the number of peaks obtained in XRPD? How will you determine the crystal structure from XRD data? 10
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NOTE : Disclosure of Identity by writing Mobile No. or Making of passing request on any page of Answer Sheet will lead to UMC against the Student.
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This download link is referred from the post: PTU B.Sc (Biotechnology) 2020 March Previous Question Papers