Indian Institute of Information Technology 2006 Entrance Exams IIT Entrance Exams JAM BIOTECHNOLOGY TEST - Question Paper

R. Involved in coordinating the movements of the body
S. Receives and processes the sensory info
(A) PQ (B) QR (C) PS (D) QS
26. The synthesis of proteins requires 20 standard amino acids in the residing systems.
However, a few organisms use selenocysteine as an additional amino acid for synthesizing proteins. Selenocysteine is biosynthesized from
(A) Cysteine
(B) Serine
(C) Threonine
(D) Proline
27. A mRNA coding for a secretory protein, when translated using free ribosome under in vitro conditions, resulted in a 40 kDa protein. The identical mRNA when translated using the rough endoplasmic reticulum resulted in a 36 kDa protein. The difference in the molecular weight of the 2 polypeptides is due to the loss of a
(A) 2 kDa peptide from N-terminus and a two kDa peptide from the C-terminus (B) 1 kDa peptide from N-terminus and a three kDa peptide from the C-terminus (C) 4 kDa peptide from the N-terminus
(D) 4 kDa peptide from the C-terminus
28. Which of the subsequent can be used for transferring the DNA into the host cells?
P. Transformation
Q. Sonication
R. Transfection
S. Electroporation
(A) Only P can be used
(B) Only Q & R can be used (C) Only Q, R & S can be used (D) Only P, R & S can be used

29. select the statement that is NOT accurate for the cytoskeletal protein actin
(A) a-actins are obtained in different kinds of muscles
(B) Polymerization of pure actin in vitro requires GTP
(C) Actin filaments have a slow growing minus end and a fast growing plus end
(D) Cytochalasins are the inhibitors for actin polymerization
30. Mast cells contain vesicles that store large amounts of histamine. After staining with eosin, these vesicles are stained red in colour. Identify which of the subsequent interactions is involved ranging from histamine and eosin?
(A) Hydrophobic interaction
(B) Electrostatic interaction
(C) Covalent bonding
(D) Hydrogen bonding
31. A culture of the Bacillus brevis when transferred to moisture free conditions
(A) utilizes glucose as the only carbon source

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