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GATE Biotechnology Mock Test - 3 - GATE Biotechnology MCQ


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30 Questions MCQ Test - GATE Biotechnology Mock Test - 3

GATE Biotechnology Mock Test - 3 for GATE Biotechnology 2025 is part of GATE Biotechnology preparation. The GATE Biotechnology Mock Test - 3 questions and answers have been prepared according to the GATE Biotechnology exam syllabus.The GATE Biotechnology Mock Test - 3 MCQs are made for GATE Biotechnology 2025 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for GATE Biotechnology Mock Test - 3 below.
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GATE Biotechnology Mock Test - 3 - Question 1

In a classroom, the ratio of boys to girls is 7:3. Which of the following options represents a valid total number of students in the class?

GATE Biotechnology Mock Test - 3 - Question 2

The total of the first n terms of the series is given by

Detailed Solution for GATE Biotechnology Mock Test - 3 - Question 2

nth term of given series = 
nth term of given series = 
nth term of given series 


GATE Biotechnology Mock Test - 3 - Question 3

If x2 equals i, what is the value of xi (where i is defined as √-1)?

Detailed Solution for GATE Biotechnology Mock Test - 3 - Question 3

x2 = i

GATE Biotechnology Mock Test - 3 - Question 4

The solution to the differential equation (cos x) is

Detailed Solution for GATE Biotechnology Mock Test - 3 - Question 4



y(sec x) = 
y sec x = tan x + C
y = sin x + C cos x

GATE Biotechnology Mock Test - 3 - Question 5

In which organelles of plant cells does the process of β-oxidation of fatty acids occur?

Detailed Solution for GATE Biotechnology Mock Test - 3 - Question 5

Metabolic reactions in eukaryotes take place in specific organelles. For example, oxidative phosphorylation takes place in mitochondria and β-oxidation takes place in glyoxysomes in plant cells.

GATE Biotechnology Mock Test - 3 - Question 6

The Cartesian coordinates (x, y) of a point A, which has polar coordinates are to be determined.

GATE Biotechnology Mock Test - 3 - Question 7

The arrangement of genes located on a chromosome is displayed below.

Which of the following rearrangements illustrates a paracentric inversion?

GATE Biotechnology Mock Test - 3 - Question 8

Which of the following methods/tools is NOT utilized for the insertion of a foreign gene into a cell?

*Answer can only contain numeric values
GATE Biotechnology Mock Test - 3 - Question 9

If  and A-1,  what is the value of x? (Provide your answer rounded to one decimal place)


Detailed Solution for GATE Biotechnology Mock Test - 3 - Question 9


So, 2x = 1 or x = 1/2 = 0.5

*Answer can only contain numeric values
GATE Biotechnology Mock Test - 3 - Question 10

A river measures 80 metres in width. The depth d (in metres) and the corresponding distance x (in metres) from one bank are provided below:

What is the estimated area of the river's cross-section (in m2) using the Trapezoidal rule?


Detailed Solution for GATE Biotechnology Mock Test - 3 - Question 10

Here, h = 10
The Trapezoidal rule for given problem is A = (h/2)[d0 + 2(d1 + d2 + d3 + d4 + d5 + d6 + d7) + d8]
Using Trapezoidal rule, we get

= 705 m2

*Answer can only contain numeric values
GATE Biotechnology Mock Test - 3 - Question 11

Determine the positive value of α for which the function f remains continuous (Round your answer to the nearest integer).


Detailed Solution for GATE Biotechnology Mock Test - 3 - Question 11

Since, function is continuous, so

*Answer can only contain numeric values
GATE Biotechnology Mock Test - 3 - Question 12

Three balls, which are colored blue, green, and red, are moved one after another from box A to box B in the sequence BLUE-GREEN-RED. What is the probability of transferring the balls back to box A in the same sequence (rounded to two decimal places) ?


*Answer can only contain numeric values
GATE Biotechnology Mock Test - 3 - Question 13

The decimal reduction time for a particular bacterial strain is 20 minutes. The specific death rate constant in min−1 (rounded to two decimal places) is ________.


*Answer can only contain numeric values
GATE Biotechnology Mock Test - 3 - Question 14

The enzyme α-amylase, which is utilized in the hydrolysis of starch, has an affinity constant (Km) of 0.005 M. To reach a hydrolysis rate that is one-fourth of the maximum, what should be the starch concentration in mM (rounded to two decimal places)?


GATE Biotechnology Mock Test - 3 - Question 15

A function f(x) is defined as f(x)  

Detailed Solution for GATE Biotechnology Mock Test - 3 - Question 15

We have f(x) 

Clearly, f(x) is not continuous at x = 0.

GATE Biotechnology Mock Test - 3 - Question 16

Which of the following describes the kinetics of product formation that is not associated with cell growth in a bioprocess system? Here, X and P represent the concentrations of viable cells and the product, respectively.

GATE Biotechnology Mock Test - 3 - Question 17

Pair the enzymes listed in Group I with their respective industrial uses found in Group II.

GATE Biotechnology Mock Test - 3 - Question 18

Pair the separation techniques in Group I with their corresponding characteristics in Group II.

GATE Biotechnology Mock Test - 3 - Question 19

Associate the autoimmune disorders listed in Group I with the respective primary organ affected in Group II.

GATE Biotechnology Mock Test - 3 - Question 20

Pair the genetic disorders listed in Column I with their respective classification categories in Column II.

Detailed Solution for GATE Biotechnology Mock Test - 3 - Question 20

Vitamin D resistant rickets occurs when the defected gene on X-chromosome is expressed dominantly, i.e. only one copy of the defected allele is sufficient to express the disease trait.
Color blindness is an X linked recessive disorder. It occurs only when both the alleles are defected (mutated).
Glycogen storage disease is inherited as an autosomal recessive genetic disorder. Recessive genetic disorders occur when an individual happens to inherit two copies of the same abnormal gene for the same trait/disease from each parent.
Huntington's disease is an autosomal dominant disorder, which means that a person needs only one copy of the defective gene to develop the disorder.

GATE Biotechnology Mock Test - 3 - Question 21

Associate the bacterial species listed in Column I with their corresponding nutritional modes in Column II.

Detailed Solution for GATE Biotechnology Mock Test - 3 - Question 21

The correct match is: P - 4, Q - 3, R - 1, S - 2

GATE Biotechnology Mock Test - 3 - Question 22

Assess the validity of the following assertion (A) and reasoning (R).

A: Numerous protozoan strains cannot thrive in the proximity of colonies of Paramecium aurelia.
R: The organism Paramecium aurelia contains cytoplasmic bacteria known as kappa particles.

Detailed Solution for GATE Biotechnology Mock Test - 3 - Question 22

Some strains of Paramecium aurelia have endosymbiotic cytoplasmic bacteria known as kappa particles. These bacteria synthesize a toxin named as paramicin which is secreted in the surrounding medium that kills other protozoans.

GATE Biotechnology Mock Test - 3 - Question 23

Align the types of hypersensitivity in Group I with their respective conditions in Group II.
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*Multiple options can be correct
GATE Biotechnology Mock Test - 3 - Question 24

Which of the following chemical messenger(s) are produced from tryptophan?

*Answer can only contain numeric values
GATE Biotechnology Mock Test - 3 - Question 25

In a batch process, if the substrate concentration decreases by 100 g/l and the resulting product P is measured at 80 g/l, what is the percentage of substrate S that has been transformed into product P?
(Give your answer in percentages)


Detailed Solution for GATE Biotechnology Mock Test - 3 - Question 25

Observed yield, Y = ΔP/(-ΔS)
Where, ΔX = change in product concentration = 80 – 0 = 80 g/l
ΔS = change in substrate concentration = 100 g/l (given)
So, Y = 80/100 = 0.8
Therefore, percentage of substrate converted = 0.8 × 100 = 80%

*Answer can only contain numeric values
GATE Biotechnology Mock Test - 3 - Question 26

Given that V = xz - x2y y2 z2, calculate the value of the divergence ∇V at the point (1, 2, 1). Please provide your answer rounded to the nearest integer.


Detailed Solution for GATE Biotechnology Mock Test - 3 - Question 26


∇.(∇V) at (1, 2, 1) = 2(12 + 22 - 2) = 6

*Answer can only contain numeric values
GATE Biotechnology Mock Test - 3 - Question 27

If a triangle has vertices at (k, 0), (2, 0), and (0, -2), and its area is 2 square units, what is the value of k?


Detailed Solution for GATE Biotechnology Mock Test - 3 - Question 27

  • The area of a triangle with vertices at (x₁, y₁), (x₂, y₂), and (x₃, y₃) is given by:
    |(1/2)[x₁(y₂-y₃) + x₂(y₃-y₁) + x₃(y₁-y₂)]|

  • Substitute the given points (k, 0), (2, 0), and (0, -2) into the formula.

  • Formula becomes: |(1/2)[k(0 - (-2)) + 2(-2 - 0) + 0(0 - 0)]| = 2

  • Simplify: |(1/2)[2k - 4]| = 2

  • Remove the absolute: |2k - 4| = 4

  • Two solutions: 2k - 4 = 4 or 2k - 4 = -4

  • Solving gives: k = 4 or k = 0


  •  
*Answer can only contain numeric values
GATE Biotechnology Mock Test - 3 - Question 28

In a dihybrid experiment conducted by Mendel, a homozygous pea plant with round yellow seeds was mated with another homozygous plant that had wrinkled green seeds. The resulting 1
F intercross yielded 560 F2 progeny. How many of these F2 progeny exhibited both dominant traits (round and yellow)?


*Answer can only contain numeric values
GATE Biotechnology Mock Test - 3 - Question 29

A 0.1 mL sample of a bacteriophage stock with a concentration of 9
4 x109 phages mL-1 is mixed with 0.5 mL of an E. coli culture that has a concentration of 2 x108 cells mL-1. What is the multiplicity of infection?


*Answer can only contain numeric values
GATE Biotechnology Mock Test - 3 - Question 30

In a population with random mating, the alleles Y and y represent the dominant and recessive traits, respectively. If the frequency of the Y allele in both the sperm and egg is 0.70, what is the frequency of Yy heterozygotes (rounded to two decimal places)?


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