BT301 Cell Biology & Biochemistry B.Tech Question Paper : wbut.ac.in
Name of the University : West Bengal University of Technology
Department : Bio-Technology
Degree : B.Tech
Sem : III
Subject Code/Name : BT-301/Cell Biology And Biochemistry
Website : wbut.ac.in
Document Type : Previous Year Examination Question Paper
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2012 : https://www.pdfquestion.in/uploads/dspace.jdvu.ac.in/6716-2012BT-301..pdf
Cell Biology And Biochemistry Question Paper :
Time Allotted : 3 Hours
Full Marks : 70
** The figures in the margin indicate full marks.
** Candidates are required to give their answers in their own words as far as practicable.
Related / Similar Question Paper : WBUT B.Tech Tissue Engineering Question Paper
GROUP – A :
( Multiple Choice Type Questions )
1. Choose the correct alternatives for any ten of the following : 10 × 1 = 10
ii) The enzyme which catalyses the reaction of substrate level phosphorylation in glycolysis is
a) Phosphoglycerate kinase
b) Phosphofructokinase
c) Phosphoglycerate mutase
d) Pyruvate dehydrogenase.
iii) Glyceraldehyde 3 phosphate dehydrogenase is inhibited by
a) magnesium b) zinc
c) iodide d) iodoacetate.
iv) What is the net gain of ATP in anaerobic glycolysis ?
a) 1 b) 2
c) 3 d) 0.
v) Acetyl CoA is produced by
a) TCA cycle
b) Pentose phosphate pathway
c) Beta oxidation
d) Glycolyis.
vi) cAMP is the second messenger for
a) epinephrine b) glucagon
c) both (a) and (b) d) none of these.
vii) S value of ribosome in eukaryote cell is
a) 70S b) 30S
c) 20S d) 80S.
viii) In lower primates uric acid is converted to
a) urea b) urease
c) allantoin d) ammonia.
ix) Cholesterol is
a) glycoprotein b) oligosaccharide
c) lipid d) nucleotide.
x) Microtubule molecule is a/an
a) monomer b) dimer
c) tetramer d) octamer.
xi) Amino acid not involved in urea cycle is
a) Arginine b) Histidine
c) Citrulline d) Aspartic acid.
xii) Maximum number of ATP is synthesized in
a) Nucleus b) Cytoplasm
c) Ribosome d) Mitochondria.
GROUP – B : Short Answer Type Questions
Answer any three of the following. 3 × 5 = 15
2. What are the main features of chemiosmotic hypothesis ?
3. How does cori cycle fulfils the needs for NAD+ in the actively working muscle cells ?
4. Discuss the significance of Pentose Phosphate Pathway in cellular metabolism.
5. What are the different phases in meiosis ? State the sigificance of meiosis cell division. 3 + 2
6. What is Ubiquitin ? In which process of metabolism is this involved ? Write the function of this in cellular metabolism. 1 + 1 + 3
GROUP – C : ( Long Answer Type Questions )
Answer any three of the following. 3 × 15 = 45
7. What is signal transduction ? What are the different types of receptors involved in cell signalling ? Give an example of signal transduction where stimulating G protein is involved. How does IP 3 function ? 2 + 4 + 6 + 3
8. Discuss the steps of ß oxidation for odd number carbon containing fatty acid. How many ATP equivalents are generated during one cycle of ß oxidation ? How many ATP equivalents are generated during complete oxidation of C16 fatty acid ? 7 + 3 + 5
9. a) Explain schematically with structures the overall chemical changes that occur during one complete turn of the TCA cycle.
b) What is the difference between glycogenesis and glycogenolysis ? 10 + 5
10. a) Discuss catabolism of purines to uric acid.
b) Descibe the urea cycle. 7
11. a) Name the complexes of the respiratory chain.
b) Schematically represent how electron is transported from NADH to O 2 .
c) Write a short note on ATP synthetase. 3 + 7 + 5
Cell Biology & Biochemistry – 2012 :
Time Allotted : 3 Hours
Full Marks : 70
** The figures in the margin indicate full marks.
** Candidates are required to give their answers in their own words as far as practicable.
GROUP – A : ( Multiple Choice Type Questions )
1. Choose the correct alternatives for any ten of the following : 10 × 1 = 10
i) The net gain of ATP molecules resulting from Glycolysis is
a) 2 b) 4
c) 36 d) 38.
ii) Any phosphorylation reaction catalysed by Kinase requires
a) 2 2 Mn / Mg + + b) Inorganic phosphate
c) Epinephrine d) All of these.
iii) The hexose monophosphate shunt has greater importance in cellular metabolism because it produces
a) NADH b) ATP
c) Acetyl CoA d) NADPH.
iv) The chemical substance that enters the Krebs’ cycle for further metabolism is
a) Ethyl alcohol b) Pyruvic acid
c) Acetyl CoA d) Lactic acid.
v) Amino acid not involved in urea cycle is
a) Arginine b) Histidine
c) Citruline d) Aspartic acid.
vi) A key substance in pyrimidine biosynthesis is
a) Carbamoyl phosphate b) ATP
c) Thiouracil d) Ribose 5 phosphate.
vii) The most abundant lipid in a cell membrane is
a) Phospholipid b) Steroid
c) Cholesterol d) Cutin.
viii) Calmodulin is a
a) ++ Fe binding protein b) +++ Fe binding protein
c) ++ Ca binding protein d) None of these.
ix) Mono-unsaturated fatty acid is
a) Palmitic acid b) Stearic acid
c) Oleic acid d) both ( a ) & ( b ).
x) Enzyme responsible for rate limiting step of glycolysis is
a) Hexokinase b) Phosphofructokinase
c) Pyruvate kinase d) Aldolase.
xi) In aerobic oxidation, terminal electron acceptor in the
electron transport chain is
a) NO2 b) NO3
c) H2O d) O2 .
GROUP – B : ( Short Answer Type Questions )
Answer any three of the following : 3 × 5 = 15
2. What do you mean by photosystem ? How many photosystems are present in plants ? What are the structural components and function of photosystem in plant ? 1 + 1 + 3
3. What is cori cycle ? Where does it occur ? Mention the significance of this cycle in human system. 2 + 1 + 2
4. Describe the ubiquitin mediated degradation of protein. 5
5. Discuss the steps in pentose phosphate pathway with overall reactions. 5
6. How is glycogen metabolism controlled by cAMP and insulin ? 5