BSc Biochemistry Sem IV ATKT 2018-19 ATKT SYBIO CHEM Biochemistry II Question Paper - Mumbai University | munotes

Questions asked in this paper

• Instructions: Please check that you have got the CORRECT paper
• (ii) Figures to the right indicate full marks

1. Q1 A) State True or False: 4 marks
   • (ii) A sarcomere extends from one M line to another M line
   • (iii) Apistrophe is an autonomic movement of locomotion
2. Q1 B) Answer any three of the following: 9 marks
   • (i) Justify: Growth hormones cause. hypertrophy and not hyperplasia in the
   • (ii) Briefly explain the myogram of a twitch contraction
   • (iii) Write a short note on nyctinastic movements in plants
   • (iv) A chilli plant sapling is fixed onto a clinostat. After 4-weeks the plant is uprooted. What would be the expected result of this particular experimental set-up and why?
   • (v) Explain with an example how turgor pressure changes influence plant
   • (vi) Explain how the skeletal muscle fibre gets energy for a marathon?
3. Q1 C) Answer any two of the following: 12 marks
   • (i) Write a detailed note on the role of different proteins in muscle contraction
   • (ii) Describe any two paratonic directional movements in plants
   • (iii) Discuss in detail the sliding filament model of muscle contraction
   • (iv) A plant always bends towards sunlight. Give detailed reasons/theories to support this kind of movement
4. Q2 A) State true or false: 4 marks
   • (i) Nissl’s granules are present in the axon
   • (iii) Efferent nerves carry signal from sensory organ to brain
   • (iv) Nerves extending from brain are spinal nerves
5. Q2 B) Write short notes on any three of the following: (O09)
   • (i) Leak channels
   • (iv) Saltatory. conduction of nerve impulse
   • (v) Myelin sheath
6. Q2 C) Answer the any two of the following: 12 marks
   • (i) Justify: The brain comprises of other cells besides the neuron
   • (ii) Describe the propagation of action potential
   • (iii) Write an elaborative note on biogenic amines as neurotransmitters
   • (iv) Describe the various types of synapses
7. Q3 A) Name of the following: 4 marks
   • (i) Precursor molecule for bile acid
   • (ii) Fraction of proteins to which immunoglobulins belong
   • (iii) Blood vessel in which lymph fluid drains
   • (iv) Substance that is reabsorbed in the thick segment of ascending limb of loop
8. Q3 B) Answer any three of the following: 9 marks
   • (i) Justify: “Counter current mechanism is responsible for the homeostasis of
   • (ii) Elaborate on any two fractions of proteins separated during electrophoresis
   • (iii) Compare and contrast between hepatic bile and gall bladder bile
   • (iv) Why do burn patients suffer from edema? Elaborate on the hypothesis that explains the same
   • (v) With the help of a schematic diagram explain clot formation
   • (vi) Enumerate the functions of bile acids
9. Q3 C) Answer any two of the following: 12 marks
   • (i) State two roles of each: (a) Proximal convoluted tubule (b) Distal convoluted tubule and (c) Glomerulus
   • (ii) What are the three forces that drive the rate and direction of exchange of body fluids in the tissues?
   • (iii) Elaborate on-‘Urine as body fluid’
   • (iv) Write an informative note on gall stones
10. Q4 A) Define any five of the following: 10 marks
11. Q4 B) Answer any three of the following: 15 marks
    • (i) Compare and contrast: Isometric and Isotonic contractions
    • (ii) Elaborate on taxis movements in plants
    • (iii) Write a note on the two types of ion channels present on a neuron
    • (iv) Justify: Speed of nerve transmission is governed by many factors
    • (v) Elaborate on acidosis and alkalosis
    • (vi) Differentiate between lymph and blood

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