Lecture Exam 1. M.CB 0201- 111 Biology Department. Attempt all questions. Full p

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Lecture Exam 1. M.CB 0201- 111 Biology Department. Attempt all questions. Full points: 100 Time allowed: 50 minutes. natructor Dr M.Chowdhury $18 D. Quaternary structure D. Cellulose 20 Far which of the tollwing structures of protein more han one polypepside is needed C Teršary structure A Primary structure B Secondary sucte 21. Which of the tollowing is a monosaccharide? A Gluoose B Sucros 22Steroidts A. Are lpids B.Have4 fused carbon rings C.Are cholesterol&sex; homones 23 Gycoaidic bond (polysaccharide)&peptide; bond (protein) are A bond B. Covalent bond C. lonic bond D.A&C; 2 Poymers are made rom monomers by: A. Oeidation B.Condensation derydration C. Reduction D. Hydrolysis 25 Chaperonin proteins are involved in: A. Signaling 26. This nitrogenous base is NOT present in DNA A. Cytosine &.Thymine C. Adenine D. Guanine EUral D. All BProtein foldingC. Transport D.Storage 27. To observe in the range of 10 nm-10 um (vinusess nibosomes) we need A Unaided eye B Light microscopy C. Electron microscopy D. Fluorescence microscopy n cal actionation techeiue, which of the tollowing speod af centrfugation will separate a pelet rich in rbosomes? B. 20,000 g C. 150,000g D. No centrifugation is needed 2Cytoskeleton does NOT have: A. Microubules B. Thin Riaments C. ntermediate flaments D. Mitochondria Which interolar junctions allow passage of smail molecules between cels? D. All of the above A Gap juncion B Tight junction CDesmosome 31. Plasma membrane proteins serve the following functions C. Cell surface receptors D. All are corect A Transporters B. Enzymes 32. Red blood cells collected in a test tube containing water will swll and undergo lysisbecause water is A Isotonic B. Hypotonic C. Hypertonic D. None of the above 3 Active tansport needs A. ATP B. Protein camier C. Solute movement of from lower to higher concentration D.A, B, C 4 which ofte blowing statements about the enzymes not true? Theenzymes AAre proteins B. Biocatalysts 35 Active site ofan enzyme bids. A Substrate B Competive ihblor C. Non-competitve intibitor D. A&B; 36. Which of the tollowing is an oxidized coenzyme? A NAD B.FADHe C. NADPH D. All of the above 7. Electron Transport Chain: A make-32 ATP .Used up nthe readin with substrates D. Speed up the rate of reacions B. Needs Or as electron acceptor D.A C. Present in milochondrial membrane 38. In energy investment phase of glycolysis the following events happen: A. 4 ATP &2 NADH are formed C. 2 ATP are used D. 4 ATP &2 NADH are used 39 Glyoolysis takes place in: A. Mitochondria 40. Orxidative phosphorylation occurs in: B. NucleusC. Nuclecius D.Cyloplasm A Inner milachondrial membrane BCytosol C. Mitochondrial matrix D.B& p. 2/2

Explanation / Answer

20. Quaternary structure
21. Glucose
22. All
23. Covalent
24. Condensation
25. Protein folding
26. Thymine
27. Electron microscope
28. 150,000g
29. Mitochondria
30. Gap junction
31. Cell surface receptors
32. Hypertonic
33. ATP
34. Used up in the reaction with substrates
35. A and B
36. NAD+
37. All
38. 2 ATP are used
39. Cytoplasm
40. Inner mitochondrial membrane

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