Biotechnology
GATE BT year:2023 PYQs
Build your understanding with focused practice from past exam papers.
Questions 41–50 of 65. Imported answers require independent review unless marked reviewed.
Question 41
Open questionBTMSQ2 marksNeeds review
Which of the following statement(s) is(are) TRUE about induced pluripotent stem cells?
Your answerSelect all correct options. You can choose more than one.
Log in to check the answer
You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 42
Open questionBTMSQ2 marksNeeds review
Which of the following statement(s) is(are) TRUE about fluoroquinolone drugs?
Your answerSelect all correct options. You can choose more than one.
Log in to check the answer
You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 43
Open questionBTMSQ2 marksNeeds review
Which of the following is(are) plant protoplast fusogenic agent(s)?
Your answerSelect all correct options. You can choose more than one.
Log in to check the answer
You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 44
Open questionBTMSQ2 marksNeeds review
Direct DNA transfer method(s) used for plant genetic engineering is(are)
Your answerSelect all correct options. You can choose more than one.
Log in to check the answer
You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 45
Open questionBTMSQ2 marksNeeds review
Which of the following vector(s) is(are) used to clone a DNA fragment of size 220 kb?
Your answerSelect all correct options. You can choose more than one.
Log in to check the answer
You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 46
Open questionBTNAT2 marksNeeds review
The following reaction represents biomass synthesis from hexadecane
C₁₆H₃₄ + 12.5O₂ + 2.13NH₃ → 10.6CH₁.₆₆O₀.₂₇N₀.₂₇ + 5.37CO₂ + 11.4H₂O
where CH₁.₆₆O₀.₂₇N₀.₂₇ represents the biomass. The value of respiratory quotient (rounded off to two decimal places) is __________.
Log in to check the answer
You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 47
Open questionBTNAT2 marksNeeds review
Temperature of a reaction with an activation energy value of 15 kcal.mol⁻¹ is increased from 300 K to 310 K. If the value of the ideal gas constant (R) is 1.9872 cal.mol⁻¹.K⁻¹, the ratio of the reaction rate constants (k₃₁₀/k₃₀₀) (rounded off to two decimal places) is __________.
Log in to check the answer
You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 48
Open questionBTNAT2 marksNeeds review
E. coli is cultivated in a chemostat operated at a dilution rate of 0.2 h⁻¹. The values of biomass yield due to oxygen consumption and the steady state biomass concentration are 0.2 g.g⁻¹ and 10 g.L⁻¹, respectively. The oxygen transfer rate (in g.L⁻¹.h⁻¹) is __________.
Log in to check the answer
You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 49
Open questionBTNAT2 marksNeeds review
Aqueous two-phase extraction is used to recover α-amylase from a solution. A polypropylene glycol-dextran mixture is added and the solution separates into upper and lower phases. The partition coefficient is 4.0 and the ratio of the upper to lower phase volume is 5.0. The enzyme recovery or yield (in percentage, rounded off to the nearest integer) is __________.
Log in to check the answer
You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 50
Open questionBTNAT2 marksNeeds review
E. coli cultivated at 298 K uptakes an uncharged compound (A) by passive diffusion. The intracellular and extracellular concentrations of A are 0.001 M and 0.1 M, respectively. If the value of the ideal gas constant R is 1.9872 cal.mol
.K
, the free-energy change (in kcal.mol
) for this passive diffusion of A (rounded off to two decimal places) is __________.Log in to check the answer
You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer