Biotechnology
GATE BT branch:bt PYQs
Build your understanding with focused practice from past exam papers.
Questions 451–460 of 650. Imported answers require independent review unless marked reviewed.
Question 51
Open questionBTNAT2 marksNeeds review
An infinite series S is given as:
S = 1 + 2/3 + 3/9 + 4/27 + 5/81 + … (to infinity)
The value of S is __________ (round off to 2 decimal places).
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Protein A and protein B form a covalent complex. Gel filtration chromatography of this complex showed a peak corresponding to 200 kDa. SDS-PAGE analysis of this complex, with and without beta-mercaptoethanol, showed a single band corresponding to molecular weight 50 and 25 kDa, respectively. Given that the molecular weight of protein A is 25 kDa, the molecular weight of protein B is __________ kDa.
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The concentrations of ATP, ADP and inorganic phosphate in a cell are 2.59, 0.73 and 2.72 mM, respectively. Under these conditions, free energy change for the synthesis of ATP at 37 °C is __________ kJ/mol (round off to 2 decimal places).
Given: free energy change for ATP hydrolysis under standard conditions is -30.5 kJ/mol and R = 8.315 kJ/mol.K
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An algorithm was designed to find globins in protein sequence databases. A database which has 78 globin sequences was searched using this algorithm. The algorithm retrieved 72 sequences of which only 65 were globins. The sensitivity of this algorithm is __________ % (round off to 2 decimal places).
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The mitochondrial electron transfer chain oxidizes NADH with oxygen being the terminal electron acceptor. The redox potentials for the two half-reactions are given below:
The free energy change associated with the transfer of electrons from NADH to O₂ is __________ kJ/mol (round off to 2 decimal places).
Given: F = 9650 C/mol.
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You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 1
Open questionGAMCQ1 markNeeds review
The fishermen, ______ the flood victims owed their lives, were rewarded by the government.
Your answerChoose one option.
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Open questionGAMCQ1 markNeeds review
Some students were not involved in the strike.
If the above statement is true, which of the following conclusions is/are logically necessary?
Some who were involved in the strike were students.
No student was involved in the strike.
At least one student was involved in the strike.
Some who were not involved in the strike were students.
Your answerChoose one option.
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Open questionGAMCQ1 markNeeds review
The radius as well as the height of a circular cone increases by 10%. The percentage increase in its volume is ______.
Your answerChoose one option.
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Open questionGAMCQ1 markNeeds review
Five numbers 10, 7, 5, 4 and 2 are to be arranged in a sequence from left to right following the directions given below:
No two odd or even numbers are next to each other.
The second number from the left is exactly half of the left-most number.
The middle number is exactly twice the right-most number.
Which is the second number from the right?
Your answerChoose one option.
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Open questionGAMCQ1 markNeeds review
Until Iran came along, India had never been ________________ in kabaddi.
Your answerChoose one option.
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