DNB 2020 Dec Previous Question Papers-(Diplomate of National Board) Under NBE
FINAL EXAM
DECEMBER 2020
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PHYSIOLOGY
PAPER-I
Time: 3 hours
Max. Marks: 100
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Important Instructions:
- You are provided with 5 answer sheet booklets. Each individual answer sheet booklet consists of 10 pages excluding the covering jackets.
- Answers to all the questions must be attempted within these 5 answer sheet booklets which must be later tagged together at the end of the exam.
- No additional supplementary answer sheet booklet will be provided.
- Attempt all questions in order.
- Each question carries 10 marks.
- Read the question carefully and answer to the point neatly and legibly.
- Do not leave any blank pages between two answers.
- Indicate the question number correctly for the answer in the margin space.
- Answer all the parts of a single question together.
- Start the answer to a question on a fresh page or leave adequate space between two answers.
- Draw table/diagrams/flowcharts wherever appropriate.
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Write short notes on:
- Write the general principles how the body act as an organized solution. Why newborn and infants go into dehydration rapidly? 7+3
- Describe with diagrammatic outline of transcription to translation in gene expression. What is the importance of post translational modification? Name two diseases due to mitochondrial DNA disorder. 5+3+2
- Mention some common mechanisms by which chemical messengers act. Name some abnormalities caused by loss or gain of function mutations of heterotrimeric G protein-coupled receptors and G proteins. 6+4
- Describe the membrane phospholipids and signal transduction pathways. 10
- Describe nervous and hormonal control of smooth muscle contraction. Mention the source of calcium ions for smooth muscle contraction. 7+3
- What is the role of positive feedback mechanism on initiation of action potential? With the help of a suitable diagram, explain how recording of membrane potential is done. 5+5
- a) Classify nerve injuries.
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b) Discuss the changes in neuron following nerve injury.
c) Enumerate factors influencing nerve regeneration. 2+5+3 - What are the age related changes occur in different system? Can anything modulate the process of aging? 7+3
- Discuss the effect of extracellular ionic changes on action potentials. 10
- What are the Type I and Type II error of hypothesis testing? Explain three common methods for determining the significance of difference. 5+5
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POSSESSION/USE OF CELL PHONES OR ANY SUCH ELECTRONIC GADGETS IS NOT PERMITTED INSIDE THE
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