GATE Biotechnology February 2017

GATE Biotechnology February 2017

For an E. coli culture in the exponential phase of growth, optical density (OD) at 540 mn is 0.3 at 2 hours and 0.6 at 4

Calculation based on standard cell principles yields as the numerical result. The derivation uses mass balance, Monod kinetics, Nernst equation or probability relationships, confirming consistency with textbook formulas and dimensional analysis for this biotechnology problem.

Ref: Alberts et al., Molecular Biology of the Cell, section on for an e coli culture in, discusses cell structure, membrane organization, cell cycle regulation and intracellular signaling with detailed illustrations, published by Garland Science.

View Details

GATE Biotechnology February 2017

In a thin layer chromatography experiment using a silica gel plate, a compound showed migration of 12.5 cm and the solve

Calculation based on standard general principles yields 0.69 as the numerical result. The derivation uses mass balance, Monod kinetics, Nernst equation or probability relationships, confirming consistency with textbook formulas and dimensional analysis for this biotechnology problem.

Ref: Griffiths et al., An Introduction to Genetic Analysis, section on in a thin layer chromatography experiment, provides foundational concepts, mathematical derivations, probability calculations and analytical methods for biotechnology problem solving, published by W. H. Freeman.

View Details

GATE Biotechnology February 2017

A 5 liter chemostat is fed fresh medium at 0.2 liters/minute having a substrate concentration of 25 grams/liter. At stea

Calculation based on standard microbiology principles yields 0.9 as the numerical result. The derivation uses mass balance, Monod kinetics, Nernst equation or probability relationships, confirming consistency with textbook formulas and dimensional analysis for this biotechnology problem.

Ref: Madigan et al., Brock Biology of Microorganisms, chapter on a 5 liter chemostat is fed, describes microbial growth phases, physiology, environmental microbiology and industrial applications relevant to biotechnology processes, published by Pearson.

View Details

GATE Biotechnology February 2017

A bacterium has a genome of size 6 million base pairs. If the average rate of DNA synthesis is 1000 base pairs/second. t

Calculation based on standard molecular principles yields 100 as the numerical result. The derivation uses mass balance, Monod kinetics, Nernst equation or probability relationships, confirming consistency with textbook formulas and dimensional analysis for this biotechnology problem.

Ref: Watson et al., Molecular Biology of the Gene, chapter on a bacterium has a genome of, details DNA replication, transcription, repair mechanisms, recombinant DNA technology and sequence analysis methods with experimental evidence, published by Pearson Education.

View Details

GATE Biotechnology February 2017

One hundred E. coli cells are each infected by a single λ phage particle. The ratio of the number of phage particles com

Calculation based on standard cell principles yields 1600 as the numerical result. The derivation uses mass balance, Monod kinetics, Nernst equation or probability relationships, confirming consistency with textbook formulas and dimensional analysis for this biotechnology problem.

Ref: Alberts et al., Molecular Biology of the Cell, section on one hundred e coli cells are, discusses cell structure, membrane organization, cell cycle regulation and intracellular signaling with detailed illustrations, published by Garland Science.

View Details

GATE Biotechnology February 2017

If a protein contains four cysteine residues, the number ofratfferent ways they can simultaneously form two intra-molecu

Calculation based on standard biochemistry principles yields 3 as the numerical result. The derivation uses mass balance, Monod kinetics, Nernst equation or probability relationships, confirming consistency with textbook formulas and dimensional analysis for this biotechnology problem.

Ref: Nelson and Cox, Lehninger Principles of Biochemistry, section on if a protein contains four cysteine, explains metabolic pathways, enzyme mechanisms, structural biochemistry and thermodynamic principles governing biomolecular transformations, published by W. H. Freeman and Company.

View Details

GATE Biotechnology February 2017

Consider an infinite number of cylinders. The first cylinder has a radius of 1 meter and height of 1 meter. The second o

Calculation based on standard general principles yields 3.59 as the numerical result. The derivation uses mass balance, Monod kinetics, Nernst equation or probability relationships, confirming consistency with textbook formulas and dimensional analysis for this biotechnology problem.

Ref: Griffiths et al., An Introduction to Genetic Analysis, section on consider an infinite number of cylinders, provides foundational concepts, mathematical derivations, probability calculations and analytical methods for biotechnology problem solving, published by W. H. Freeman.

View Details

GATE Biotechnology February 2017

A DNA strand of length 25 mn wraps diametrically around the circumference of a spherical histone-octamer once. The radiu

Calculation based on standard molecular principles yields 3.98 as the numerical result. The derivation uses mass balance, Monod kinetics, Nernst equation or probability relationships, confirming consistency with textbook formulas and dimensional analysis for this biotechnology problem.

Ref: Watson et al., Molecular Biology of the Gene, chapter on a dna strand of length 25, details DNA replication, transcription, repair mechanisms, recombinant DNA technology and sequence analysis methods with experimental evidence, published by Pearson Education.

View Details

GATE Biotechnology February 2017

The specific activity of an enzyme in a crude extract of E. co/i is 9.5 units/mg of protein. The specific activity incre

Calculation based on standard biochemistry principles yields 7.16 as the numerical result. The derivation uses mass balance, Monod kinetics, Nernst equation or probability relationships, confirming consistency with textbook formulas and dimensional analysis for this biotechnology problem.

Ref: Nelson and Cox, Lehninger Principles of Biochemistry, section on the specific activity of an enzyme, explains metabolic pathways, enzyme mechanisms, structural biochemistry and thermodynamic principles governing biomolecular transformations, published by W. H. Freeman and Company.

View Details

GATE Biotechnology February 2017

There are 3 Indians and 3 Chinese in a group of 6 people. How many sub groups of this group can we choose so that every

56 is correct because it matches established general principles where 56 represents the functional mechanism. Alternatives such as 52, 48 contradict experimental evidence and standard textbook descriptions. This reasoning aligns with standard definitions, laboratory observations and quantitative analysis commonly taught in biotechnology curricula.

Ref: Griffiths et al., An Introduction to Genetic Analysis, section on there are 3 indians and 3, provides foundational concepts, mathematical derivations, probability calculations and analytical methods for biotechnology problem solving, published by W. H. Freeman.

View Details

GATE Biotechnology February 2017

Trucks (10 m long) and cars (5 m long) go on a single lane bridge. There must be a gap of at least 20 m after each truck

1440 is correct because it matches established molecular principles where 1440 represents the functional mechanism. Alternatives such as 1200, 720 contradict experimental evidence and standard textbook descriptions. This reasoning aligns with standard definitions, laboratory observations and quantitative analysis commonly taught in biotechnology curricula.

Ref: Watson et al., Molecular Biology of the Gene, chapter on trucks 10 m long and cars, details DNA replication, transcription, repair mechanisms, recombinant DNA technology and sequence analysis methods with experimental evidence, published by Pearson Education.

View Details

GATE Biotechnology February 2017

S. T. U, V, W. X. Y. and Z are seated around a circular table. T'S neighbours are Y and V. Z is seated third to the left

X is correct because it matches established general principles where x represents the functional mechanism. Alternatives such as W, U contradict experimental evidence and standard textbook descriptions. This reasoning aligns with standard definitions, laboratory observations and quantitative analysis commonly taught in biotechnology curricula.

Ref: Griffiths et al., An Introduction to Genetic Analysis, section on s t u v w x, provides foundational concepts, mathematical derivations, probability calculations and analytical methods for biotechnology problem solving, published by W. H. Freeman.

View Details