GATE BT topic:biotechnology PYQs & Answers — Page 25

Home
GATE
Biotechnology
Topics
topic:biotechnology

Questions 241–250 of 650. Imported answers require independent review unless marked reviewed.

Topic practice 650 questionsPage 25 of 65

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 __________.

You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer

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 __________.

You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer

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 __________.

You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer

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 __________.

You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer

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

, the free-energy change (in kcal.mol

) for this passive diffusion of A (rounded off to two decimal places) is __________.

You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer

If there are three unrooted trees for four protein sequences, the number of rooted trees for the same number of sequences is __________.

You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer

The number of different possible ways of forming five intramolecular disulfide bonds with ten cysteine residues of a protein is __________.

You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer

The following schematic diagram shows a chemostat with cell recycle

where F₀ and Fᵣ are the volumetric flow rates (in L.h

) of feed and recycle streams, respectively. X₁, X₀ and X are the cell concentrations (in g.L

) in the reactor, recycle-stream and product-stream, respectively. If

and X₁ is 7.3 g.L

, the value of X (in g.L

, rounded off to one decimal place) is __________.

You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer

An enzyme (E) catalyzes the biochemical reaction A → B with k₍cat₎ equal to 500 s

. If the initial reaction velocity (V₀) is 10 μM.s

at the total enzyme concentration [Eₜ] of 30 nM and substrate concentration [A] of 40 μM, the value of Kₘ (in μM) is __________.

You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer

DNA sample collected from an unidentified bacterial species (Y) contains 13% of adenine. The G+C content (in percentage) of Y is __________.

You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer

GATE BT topic:biotechnology PYQs

Question 46

Question 47

Question 48

Question 49

Question 50

Question 51

Question 52

Question 53

Question 54

Question 55