2024
29-06-2024
Biochemistry- ICAR JRF/SRF 2024
Official solved question paper with verified bilingual step-by-step solutions and key concepts. आधिकारिक हल प्रश्न पत्र — विस्तृत द्विभाषी व्याख्या, प्रामाणिक उत्तर कुंजी एवं मुख्य अवधारणाओं सहित।
Questions in this Paper इस प्रश्न पत्र के प्रश्न
120 Questions 120 प्रश्न
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
Movement of DNA from one bacterium to another through a tubular bridge or pilus:
Which of the following is responsible for eliminating toxic oxygen by-products from cells?
form of multiple parasitism in which a parasite preferentially attacks a host that is already parasitized by another species is
known as
For mass multiplication of DD-136 nematode, the common host used is
Chlorpyriphos methyl is effective against stored product insects except
Which of the following insects often cause inhalational allergies in human following large emergence of adult insects
Given below are two statements
Statement (|); Climate is a weather condition related to smaller areas at a given place and at a given time.Statement (II) : Weather is a condition of atmosphere at a given place and at a given time
In light of the above statements, choose the most appropriate answer from the options given below.
The local name of cyclone in Philippines is
Which one of the following are secondary tillage implements?
(A) .Subsoiler
(B) .Cultivator
(C) .Disc harrow
(D) . Wetland plough
Choose the correct answer from the options given below:
is the most suitable, drought resistant and persistant grass?
The rainfed area in India is approximately
Which nutrient is often a limiting factor in agricultural production?
What is a potential disadvantage of agroforestry systems?
Pungency in mustard oil is due to
Sesamum belongs to the family
Dark period is critical in which type of plant?
Which of the following is NOT a significant contributor to greenhouse gas emissions from livestock farming?
Fe deficiency is mostly seen in crops growing on
EDV (Essentially Derived Varieties) are those which are derived from
What is the role of "companion planting" in agriculture?
Which of the following is the correct stereoisomer representing Aspartame, the artificial sweetener?
Match List-I with List-II:
Choose the correct answer from the options given below:
सूची - I को सूची - II से सुमेलित कीजिए :
नीचे दिए गए विकल्पों में से सही उत्तर चुनिए :
Given below are two statements
Statement (I) : Plant cells are usually smaller than animal cells
Statement (II) : Plant cells range from 10m to 100 um in diameter.
In light of the above statements, choose the most appropriate answer from the options given below.
Sialic acid is also called as
Which one of the following was the first amino acid to be discovered?
Given below are two statements, one is labelled as Assertion (A) and other one labelled as Reason (R).
Assertion (A) : Archaebacteria survive on extreme conditions like high temperature and low pH
Reason (R) : Archaebacteria have unique membrane lipids linked through ester bonds that is more stable than ether bonds
found in other lipids
In light of the above statements, choose the correct answer from the options given below.
Given below are two statements
Statement (I) : Prostaglandins are known as eicosaniods and contain 15 carbons.
Statement (II) : Prostaglandins E and F were first isolated from the biological fluids.
In light of the above statements, choose the most appropriate answer from the options given below.
Given below are two statements
Statement (I) : Biological nitrogen fixation is carried out by a highly conserved complex of proteins called the nitrogenase
complex
Statement (II) : Nitrogen fixation requires ten electrons for the reduction of Nz and to produce one molecule of Ho.
In light of the above statements, choose the most appropriate answer from the options given below.
What is the function of mitochondria?
Given below are two statements
Statement (I) : The compounds acetone, aceto-acetate and B-hydroxybutyrate are known as ketone bodies.
Statement (II) : Ketone bodies are synthesized in muscles and are fat-soluble in nature.
In light of the above statements, choose the most appropriate answer from the options given below.
What are essential amino acids?
Match List-I with List-II:
Choose the correct answer from the options given below:
सूची - I को सूची - II से सुमेलित कीजिए :
नीचे दिए गए विकल्पों में से सही उत्तर चुनिए :
Given below are two statements
Statement (I) : The active absorption of water takes place due to the activity of root and root hairs.
Statement (II) : The rate of absorption depends upon transpiration in active absorption of water.
In light of the above statements, choose the most appropriate answer from the options given below.
Who proposed the term isozyme?
Which one of the following is NOT the characteristic of ephimerales?
Given below are two statements, one is labelled as Assertion (A) and other one labelled as Reason (R).
Assertion (A) : Ethylene reduces biosynthesis of auxins and inhibits its transport from the region of synthesis to the site of
action
Reason (R) : Ethylene is considered to stimulate genes and results in the inhibition of certain mRNA and enzyme
In light of the above statements, choose the correct answer from the options given below.
Match List-I with List-II:
Choose the correct answer from the options given below:
सूची - I को सूची - II से सुमेलित कीजिए :
नीचे दिए गए विकल्पों में से सही उत्तर चुनिए :
Which one of the following statements is NOT CORRECT regarding dormancy?
Which hormone inhibits gibberellin-induced enzyme production?
‘What is the function of amyloplasts?
Given below are two statements
Statement (I) : In acrocentric, the centromere is situated at the center of the middle part of the chromosome.
Statement (II) : In the sub-metacentric, the centromere is close to the center and chromosomes have unequal arms.
In light of the above statements, choose the most appropriate answer from the options given below.
Given below are two statements
Statement (I) : Leucoplasts and chromoplasts are considered active stages of plastids while chloroplasts as the degenerative ones.
Statement (II) : The chloroplast is also considered as a prokaryotic cell within an eukaryotic cell.
In light of the above statements, choose the most appropriate answer from the options given below.
‘Which plant hormone reports the delay in senescence?
Given below are two statements
Statement (I) : Long-short day plants flower only ifa certain number of short days are preceded by a number of long days.
Statement (II) : Ambi-photoperiodic plants can flower in short days or long days but never in intermediate daylengths.
In light of the above statements, choose the most appropriate answer from the options given below.
Which seed layer is differentiated into palisade cells?
Which of the following restriction endonuclease pairs are isochizomers?
Which of the following genes are genetically engineered in biofortified GOLDEN RICE?
Match List-I with List-II:
Choose the correct answer from the options given below:
सूची - I को सूची - II से सुमेलित कीजिए :
नीचे दिए गए विकल्पों में से सही उत्तर चुनिए :
The genome edited GABA tomato is enriched in
Which of the following are multi-parent population designs in plants?
Which of the following is not a diazatroph?
Which of the following pollen types respond best during anther culture?
Given below are two statements, one is labelled as Assertion (A) and other one labelled as Reason (R).
Assertion (A) : Hybrid Embryo rescue is important for the development of interspecific hybrids
Reason (R) : Embryo fails to develop due to endosperm degeneration in interspecific hybrids
In light of the above statements, choose the correct answer from the options given below.
How many sister chromatids are in the rice (Oryza sativa) plant cell entering the first meiotic division?
The hammerhead ribozyme is one of the most commonly used ribozymes in technology.
Which of the following statements is
true about its function and structure?
Given below are two statements
Statement (I) : Diethylpyrocarbonate (DEPC) is used to inactivate RNases in buffers and on glassware
Statement (II) : Diethylpyrocarbonate (DEPC) is a transition state analog that binds to active sites of RNases.
In light of the above statements, choose the most appropriate answer from the options given below.
Repressor molecules bind to
Which of the following are features of Ti-plasmid?
(A). They contain one (or more) T-DNA region
(B). They contain a region enabling antibiotic resistance
(C). They contain a vir region
(D). They contain a region enabling conjugative transfer.
Choose the correct answer from the options given below:
Match List-I with List-II:
Choose the correct answer from the options given below:
सूची - I को सूची - II से सुमेलित कीजिए :
नीचे दिए गए विकल्पों में से सही उत्तर चुनिए :
Match List-I with List-II:
Choose the correct answer from the options given below:
सूची - I को सूची - II से सुमेलित कीजिए :
नीचे दिए गए विकल्पों में से सही उत्तर चुनिए :
Which one of the following is NOT an assumption of ANOVA?
Match List-I with List-II:
Choose the correct answer from the options given below:
सूची - I को सूची - II से सुमेलित कीजिए :
नीचे दिए गए विकल्पों में से सही उत्तर चुनिए :
Match List-I with List-II:
Choose the correct answer from the options given below:
सूची - I को सूची - II से सुमेलित कीजिए :
नीचे दिए गए विकल्पों में से सही उत्तर चुनिए :
Read the following statements regarding bioremediation
(A) . Aerobic biodegradation of PCBs is mainly carried out by the white rot fungus, Phanerochaete and by Acinetobacter and
Alcaligenes.
(B) . Methylococcus capsulatus can convert chloro- and bromo methane to formaldehyde, dichloro- and trichloro methane to
CO? while growing on methane.
(C) . In most cases, pesticides that are cometabolized are completely degraded, hence cometabolism of a pesticide is always
good from an environmental standpoint
(D) . Burkholderia dechlorinates the pesticide 2, 4, 5-T aerobically by using oxygenase enzymes and release chloride ion
(Ch).
(E) . Reductive dechlorination is less important than oxidative dechlorination from ecological standpoint.
Choose the correct answer from the options given below:
Given below are two statements, one is labelled as Assertion (A) and other one labelled as Reason (R).
Assertion (A) : B-lactam antibiotics are given in combination with clavulanic acid
Reason (R) : Clavulanic acid binds with B-lactamase with a high affinity, inhibits it and prevents it to act on the B-lactam
antibiotics.
In light of the above statements, choose the correct answer from the options given below.
Which of the following technique is most frequently used for culture preservation in microbial culture collection centers?
Given below are two statements
Statement (I) : During feedback inhibition of enzyme, the activity of an enzyme already present in the cell and it is inhibited by
the end product of the reaction
Statement (II) : During repression of enzyme, the synthesis of an enzyme is inhibited by the end product of the reaction
In light of the above statements, choose the most appropriate answer from the options given below.
Read the following statements regarding inhibition of oxidative phosphorylation
(A) . Cyanide binds tightly with cytochromes and prevents their functioning
(B) . The antibiotic antimycin A inhibits electron transport chain (ETC) by competing with coenzyme Q.
(C) . The antibiotic piericidin blocks ETC between cytochrome b and c
(D) . Carbon monoxide binds tightly with cytochromes and prevents their functioning
(©). The uncouplers prevent ATP synthesis without affecting ETC itself
Choose the correct answer from the options given below:
Microorganisms transform mercury (Hg) by the process of methylation yielding methylmercury (CH3Hg").
Which of the
following is correct regarding toxicity of methylmercury?
The use of computers to store and analyze the sequences and structures of nucleic acids and proteins, is refered as
Given below are two statements, one is labelled as Assertion (A) and other one labelled as Reason (R).
Assertion (A) : Large number of weak interactions between macromolecules in supramolecular complexes stabilizes them,
producing their unique structure.
Reason (R) : In supramolecular complexes, macromolecules are held together by covalent interactions
In light of the above statements, choose the correct answer from the options given below.
Read the following statements-
(A) . Molecular conformation is defined as the spatial arrangement of atoms or the substituents groups
(B) . Molecular conformation can be changed without breaking any bond.
(C) . Ahydrocarbon, ethane has many interconvertible molecular conformations
(D) . All the conformations of ethane and other hydrocarbons can be easily isolated
(©). Of all, eclipsed conformation is the most stable and staggered is the least stable conformation.
Choose the correct answer from the options given below:
Given below are two statements
Statement (I) : The amino acid residues in protein molecule are exclusively L-stereoisomers.
Statement (II) : All the L-amino acids are levorotatory i.e., rotating light to the left
In light of the above statements, choose the most appropriate answer from the options given below.
Match List-I with List-II:
Choose the correct answer from the options given below:
सूची - I को सूची - II से सुमेलित कीजिए :
नीचे दिए गए विकल्पों में से सही उत्तर चुनिए :
Given below are two statements, one is labelled as Assertion (A) and other one labelled as Reason (R).
Assertion (A) : Lipid-rich foods, exposed too long to the air become rancid
Reason (R) : The double bonds in the unsaturated fatty acid in lipids undergo oxidative cleavage to produce compounds of
higher volatility.
In light of the above statements, choose the correct answer from the options given below.
Match List-I with List-II:
Choose the correct answer from the options given below:
सूची - I को सूची - II से सुमेलित कीजिए :
नीचे दिए गए विकल्पों में से सही उत्तर चुनिए :
Given below are two statements
Statement (I) : The non-polar hydrocarbon chain of fatty acids accounts for their poor solubility in organic solvents
Statement (II) : The longer the fatty acyl chain and fewer the double bonds; the lower the solubility in water.
In light of the above statements, choose the most appropriate answer from the options given below.
Co-enzyme Q is also known as
Read the following statements-
(A) . Acetyl Co-Ais the positive allosteric modulator of Pyruvate decarboxylase.
(B) . Thiamine pyrophosphate is an essential co-factor of pyruvate decarboxylase
(C) . Pyruvate decarboxylase is universally present in plants and animals.
(D) . Pyruvate decarboxylase converts pyruvate to acetaldehyde and CO
(E) . The decarboxylation reaction by pyruvate decarboxylase is an irreversible reaction
Choose the correct answer from the options given below:
The partitioning of isocitrate between the citric acid cycle and glyoxylate cycle is controlled by regulation of
which of the
following enzyme?
Given below are two statements, one is labelled as Assertion (A) and other one labelled as Reason (R).
Assertion (A) : The most effective drugs; neither too lipophilic nor too hydrophilic, are designed in a way that they can readily
assume both their ionized and unionized forms at physiological pH
Reason (R) : The pK values of these drugs range between 6.0 to 8.0.
In light of the above statements, choose the correct answer from the options given below.
Which of the following Vitamin contains the ‘Corrin ring system’?
Given below are two statements
Statement (I) : Competitive enzyme inhibition is a type of irreversible inhibition
Statement (II) : In the presence of competitive inhibitor, the apparent Vmax of the enzyme increases by the factor a
In light of the above statements, choose the most appropriate answer from the options given below.
Chymotrypsin belongs to
which of the following type of proteases?
Given below are two statements
Statement (I) : The kinetics of allosteric enzymes differ from Michaelis-Menten kinetics
Statement (II) : Allosteric enzymes function through reversible, covalent binding of allosteric modulators or effectors
In light of the above statements, choose the most appropriate answer from the options given below.
Which of following antibiotic, regulating eukaryotic translation, is extracted from castor beans?
Given below are two statements
Statement (I) : DNA usually absorbs maximum at 260 nm, entirely due to its aromatic bases
Statement (II) : On denaturation, DNA's ultraviolet absorbance decreases by nearly 40%, though the absorbance maximum
wavelength remains the same
In light of the above statements, choose the most appropriate answer from the options given below.
Which of following is NOT true about Genetic Code?
Given below are two statements, one is labelled as Assertion (A) and other one labelled as Reason (R).
Assertion (A) : Euchromatin is less condensed DNA than heterochromatin DNA.
Reason (R) : Euchromatin is transcriptionally active DNA thus needs to provide the access to transcription machinery.
In light of the above statements, choose the correct answer from the options given below.
Given below are two statements
Statement (I) : d-amanitin disrupts m-RNA formation in animal cells by blocking pol II
Statement (II) : RNA Polymerase | and bacterial RNA polymerase, both are insensitive to a-amanitin
In light of the above statements, choose the most appropriate answer from the options given below.
Given below are two statements, one is labelled as Assertion (A) and other one labelled as Reason (R).
Assertion (A) : Difference gel electrophoresis (DIGE) allows the comparison of protein components of two samples by
running only one 2-D gel.
Reason (R) : Different samples are treated with two different yet structurally similar, fluorescent dyes and then mixed to be
run on 2-D gel
In light of the above statements, choose the correct answer from the options given below.
Given below are two statements
Statement (I) : In MALDI-TOF, MALDI produces gas phase protonated ions of sample molecules through LASER.
Statement (II) : MALDI is superior to other ionization methods as it produces large mass ions with high sensitivity.
In light of the above statements, choose the most appropriate answer from the options given below.
Which of the following method is used for detection of particular protein on the basis of its biological activity?
The two intact bands of RNA visible on agarose gel define its integrity. These bands belong to which type of RNA?
SIM mode acquisition has a particular application for on-line chromatography/mass spectrometry. SIM stands for
Which disaccharide has no free aldehyde or ketone group?
Match List-I with List-II:
Choose the correct answer from the options given below:
सूची - I को सूची - II से सुमेलित कीजिए :
नीचे दिए गए विकल्पों में से सही उत्तर चुनिए :
Given below are two statements
Statement (I) : Green leafy vegetables are good sources of provitamin A, folic acid and calcium.
Statement (II) : Cassava, sweet potato and carrots are types of green leafy vegetables
In light of the above statements, choose the most appropriate answer from the options given below.
Match List-I with List-II:
Choose the correct answer from the options given below:
सूची - I को सूची - II से सुमेलित कीजिए :
नीचे दिए गए विकल्पों में से सही उत्तर चुनिए :
Given below are two statements
Statement (I) : The ratio of volume of CO2 produced to the volume of 0, utilized in the oxidation of foodstuffs is known as
respiratory quotient
Statement (II) : The respiratory quotient of carbohydrate is 0.7 and fat is 1
In light of the above statements, choose the most appropriate answer from the options given below.
Read the following statements
(A) . Rubisco is not absolutely specific for CO2 as a substrate.
(B) . Rubisco catalyzes the condensation of O2 with ribulose 1,5-bisphosphate to form 3-phosphoglycerate and 2-
phosphoglycolate
(C) . The Km for COz is about 9 uM, and that for Q2 is about 350 uM
(D) . Photorespiration does not conserve energy and inhibit net biomass formation as much as 50%.
Choose the correct answer from the options given below:
Which chemicals are the raw materials of photosynthesis?
Given below are two statements
Statement (I) : Starch and sucrose are the major carbohydrates stored in plants
Statement (II) : Starch is synthesized and stored in mitochondria
In light of the above statements, choose the most appropriate answer from the options given below.
Given below are two statements
Statement (I) : Calvin cycle consumes 3126 kd (750 kcal) in the form of NADPH and ATP.
Statement (II) : Rubisco is activated when activator CO2 reacts slowly with an uncharged ¢-NHp group of lysine within the
active site of the enzyme.
In light of the above statements, choose the most appropriate answer from the options given below.
Given below are two statements, one is labelled as Assertion (A) and other one labelled as Reason (R).
Assertion (A) : A Cg acid was first observed in “4CO2 labeling studies of sugarcane by H. P. Kortschack and colleagues.
Reason (R) : Primary carboxylation in Ca plants is catalyzed by rubisco, not by PEP carboxylase.
In light of the above statements, choose the correct answer from the options given below.
Given below are two statements
Statement (I) : Denitrification is the conversion of nitrate to Nz under anaerobic conditions.
Statement (II) : Soil bacteria use NOs rather than O2as the ultimate electron acceptor that generates a transmembrane
proton gradient, which is used to synthesize ATP.
In light of the above statements, choose the most appropriate answer from the options given below.
Which poisonous gas is released by cyanogenic glycosides?
Given below are two statements
Statement (I) : The timing of the cell cycle is controlled by a family of protein kinases.
Statement (II) : The kinases are heterodimers with a regulatory subunit, cyclin, and a catalytic subunit, cyclin-dependent
protein kinase (CDK).
In light of the above statements, choose the most appropriate answer from the options given below.
Match List-I with List-II:
Choose the correct answer from the options given below:
सूची - I को सूची - II से सुमेलित कीजिए :
नीचे दिए गए विकल्पों में से सही उत्तर चुनिए :
What is the main source of nitrogen for plants?
Given below are two statements
Statement (I) : The ability of a genotype to dissipate the radiation energy and thereby avoid a rise in plant temperature to a
stress level is called heat avoidance.
Statement (II) : The ability of a genotype to perform better than others under high temperature is called heat tolerance.
In light of the above statements, choose the most appropriate answer from the options given below.
Given below are two statements, one is labelled as Assertion (A) and other one labelled as Reason (R).
Assertion (A) : The inability of plants to meet the evapotranspirational demand is known as moisture stress
Reason (R) : The concentration of abscisic acid and expression of stress responsive genes decreases in response to water
stress
In light of the above statements, choose the correct answer from the options given below.
Match List-I with List-II:
Choose the correct answer from the options given below:
सूची - I को सूची - II से सुमेलित कीजिए :
नीचे दिए गए विकल्पों में से सही उत्तर चुनिए :
Given below are two statements
Statement (I) : RAPD is a dominant PCR based marker.
Statement (II) : RAPD was the first to become available and is most commonly and frequently used.
In light of the above statements, choose the most appropriate answer from the options given below.
Given below are two statements
Statement (I) : Sorghum somaclonal variant line (R111) is resistant to drought stress.
Statement (II) : Polyethylene glycol is used as a selective agent to stimulate the effect of drought in tissue culture conditions
In light of the above statements, choose the most appropriate answer from the options given below.
Which technique is used to detect specific DNA molecule ?
Given below are two statements
Statement (I) : The synthesis of new DNA strand is catalyzed by DNA polymerase II in 5' to 3’ direction
Statement (II) : DNA polymerase II also has a proof-reading activity.
In light of the above statements, choose the most appropriate answer from the options given below.
Match List-I with List-II:
Choose the correct answer from the options given below:
सूची - I को सूची - II से सुमेलित कीजिए :
नीचे दिए गए विकल्पों में से सही उत्तर चुनिए :
Given below are two statements
Statement (I) : CDNA clones are generated from processed mRNA which lack introns and other sequences surrounding the
gene
Statement (II) : CDNA libraries are used when the gene of interest is expressed in a particular tissue or cell type
In light of the above statements, choose the most appropriate answer from the options given below.
Cell suspension culture is used for the production of
which of the following?
Ready to Practice the Full Paper? क्या आप पूरे प्रश्न पत्र का अभ्यास करने के लिए तैयार हैं?
Practice all 120 questions with live evaluation, step-by-step solutions, and detailed explanations. सभी 120 प्रश्नों का लाइव मूल्यांकन, तुरंत फीडबैक और विस्तृत द्विभाषी समाधान के साथ अभ्यास करें।
Official PYQ Papers
Previous Year Papers of Biochemistry
Practice official shift-wise question papers with answer keys and detailed explanations on the actual exam pattern.
1
Total Available
Previous Papers