IIT JAM 2024 Biotechnology Question Paper with Solution | Mock Test Series of IIT JAM Biotechnology 2026 - Biotechnology Engineering (BT) PDF Download

 Page 1


IIT JAM 2024 Biotechnology Question Paper with Solution
Time Allowed :3 Hours Maximum Marks :100 Total Questions :60
General Instructions
Read the following instructions very carefully and strictly follow them:
1. The examination duration is 3 Hours. Manage your time effectively to attempt all
questions within this period.
2. The total marks for this examination are 100. Aim to maximize your score by
strategically answering each question.
3. There are 60 mandatory questions to be attempted in the paper. Ensure that all
questions are answered.
4. Questions may appear in a shuffled order . Do not assume a fixed sequence and
focus on each question as you proceed.
5. The marking of answers will be displayed as you answer. Use this feature to
monitor your performance and adjust your strategy as needed.
6. You may mark questions for review and edit your answers later. Make sure to
allocate time for reviewing marked questions before final submission.
7. Be aware of the detailed section and sub-section guidelines provided in the exam.
Understanding these will aid in effectively navigating the exam.
1
Page 2


IIT JAM 2024 Biotechnology Question Paper with Solution
Time Allowed :3 Hours Maximum Marks :100 Total Questions :60
General Instructions
Read the following instructions very carefully and strictly follow them:
1. The examination duration is 3 Hours. Manage your time effectively to attempt all
questions within this period.
2. The total marks for this examination are 100. Aim to maximize your score by
strategically answering each question.
3. There are 60 mandatory questions to be attempted in the paper. Ensure that all
questions are answered.
4. Questions may appear in a shuffled order . Do not assume a fixed sequence and
focus on each question as you proceed.
5. The marking of answers will be displayed as you answer. Use this feature to
monitor your performance and adjust your strategy as needed.
6. You may mark questions for review and edit your answers later. Make sure to
allocate time for reviewing marked questions before final submission.
7. Be aware of the detailed section and sub-section guidelines provided in the exam.
Understanding these will aid in effectively navigating the exam.
1
Section A
Q.1 – Q.10 Carry ONE mark each
1. Which one of the following is a simple tissue system in plants?
(A) Epidermis
(B) Parenchyma
(C) Phloem
(D) Xylem
Correct Answer: (A). Epidermis
Explanation:
Simple tissues consist of one type of cell. Epidermis is a simple tissue that forms the outer
protective covering of plants, helping prevent water loss and providing protection against
mechanical injury. Complex tissues like xylem and phloem, however, are composed of more
than one type of cell.
Quick Tip
Epidermis, being a simple tissue, is distinct from complex tissues such as xylem and
phloem, which transport water and nutrients.
2. In DNA replication, the Okazaki fragments are joined by:
(A) DNA helicase
(B) DNA ligase
(C) DNA polymerase
(D) DNA primase
Correct Answer: (B). DNA ligase
Explanation:
Okazaki fragments are short DNA segments synthesized on the lagging strand during
replication. DNA ligase plays a critical role by sealing nicks between these fragments to
2
Page 3


IIT JAM 2024 Biotechnology Question Paper with Solution
Time Allowed :3 Hours Maximum Marks :100 Total Questions :60
General Instructions
Read the following instructions very carefully and strictly follow them:
1. The examination duration is 3 Hours. Manage your time effectively to attempt all
questions within this period.
2. The total marks for this examination are 100. Aim to maximize your score by
strategically answering each question.
3. There are 60 mandatory questions to be attempted in the paper. Ensure that all
questions are answered.
4. Questions may appear in a shuffled order . Do not assume a fixed sequence and
focus on each question as you proceed.
5. The marking of answers will be displayed as you answer. Use this feature to
monitor your performance and adjust your strategy as needed.
6. You may mark questions for review and edit your answers later. Make sure to
allocate time for reviewing marked questions before final submission.
7. Be aware of the detailed section and sub-section guidelines provided in the exam.
Understanding these will aid in effectively navigating the exam.
1
Section A
Q.1 – Q.10 Carry ONE mark each
1. Which one of the following is a simple tissue system in plants?
(A) Epidermis
(B) Parenchyma
(C) Phloem
(D) Xylem
Correct Answer: (A). Epidermis
Explanation:
Simple tissues consist of one type of cell. Epidermis is a simple tissue that forms the outer
protective covering of plants, helping prevent water loss and providing protection against
mechanical injury. Complex tissues like xylem and phloem, however, are composed of more
than one type of cell.
Quick Tip
Epidermis, being a simple tissue, is distinct from complex tissues such as xylem and
phloem, which transport water and nutrients.
2. In DNA replication, the Okazaki fragments are joined by:
(A) DNA helicase
(B) DNA ligase
(C) DNA polymerase
(D) DNA primase
Correct Answer: (B). DNA ligase
Explanation:
Okazaki fragments are short DNA segments synthesized on the lagging strand during
replication. DNA ligase plays a critical role by sealing nicks between these fragments to
2
form a continuous DNA strand. Other enzymes like helicase and primase have distinct roles,
such as unwinding DNA and synthesizing primers, respectively.
Quick Tip
Remember, DNA ligase acts like ”molecular glue” to ensure DNA integrity.
3. The most abundant type of RNA in a metabolically active mammalian cell is:
(A) mRNA
(B) rRNA
(C) snoRNA
(D) tRNA
Correct Answer: (B). rRNA
Explanation:
Ribosomal RNA (rRNA) constitutes about 80% of the total RNA in a cell. It is a key
component of ribosomes, where protein synthesis occurs. In contrast, messenger RNA
(mRNA) and transfer RNA (tRNA) make up smaller proportions and serve as intermediaries
in protein synthesis.
Quick Tip
rRNA forms the structural and functional framework of ribosomes, which catalyze pep-
tide bond formation.
4. Which organelle in a eukaryotic cell is the site of the electron transport chain?
(A) Endoplasmic reticulum
(B) Golgi apparatus
(C) Mitochondrion
(D) Peroxisome
Correct Answer: (C). Mitochondrion
3
Page 4


IIT JAM 2024 Biotechnology Question Paper with Solution
Time Allowed :3 Hours Maximum Marks :100 Total Questions :60
General Instructions
Read the following instructions very carefully and strictly follow them:
1. The examination duration is 3 Hours. Manage your time effectively to attempt all
questions within this period.
2. The total marks for this examination are 100. Aim to maximize your score by
strategically answering each question.
3. There are 60 mandatory questions to be attempted in the paper. Ensure that all
questions are answered.
4. Questions may appear in a shuffled order . Do not assume a fixed sequence and
focus on each question as you proceed.
5. The marking of answers will be displayed as you answer. Use this feature to
monitor your performance and adjust your strategy as needed.
6. You may mark questions for review and edit your answers later. Make sure to
allocate time for reviewing marked questions before final submission.
7. Be aware of the detailed section and sub-section guidelines provided in the exam.
Understanding these will aid in effectively navigating the exam.
1
Section A
Q.1 – Q.10 Carry ONE mark each
1. Which one of the following is a simple tissue system in plants?
(A) Epidermis
(B) Parenchyma
(C) Phloem
(D) Xylem
Correct Answer: (A). Epidermis
Explanation:
Simple tissues consist of one type of cell. Epidermis is a simple tissue that forms the outer
protective covering of plants, helping prevent water loss and providing protection against
mechanical injury. Complex tissues like xylem and phloem, however, are composed of more
than one type of cell.
Quick Tip
Epidermis, being a simple tissue, is distinct from complex tissues such as xylem and
phloem, which transport water and nutrients.
2. In DNA replication, the Okazaki fragments are joined by:
(A) DNA helicase
(B) DNA ligase
(C) DNA polymerase
(D) DNA primase
Correct Answer: (B). DNA ligase
Explanation:
Okazaki fragments are short DNA segments synthesized on the lagging strand during
replication. DNA ligase plays a critical role by sealing nicks between these fragments to
2
form a continuous DNA strand. Other enzymes like helicase and primase have distinct roles,
such as unwinding DNA and synthesizing primers, respectively.
Quick Tip
Remember, DNA ligase acts like ”molecular glue” to ensure DNA integrity.
3. The most abundant type of RNA in a metabolically active mammalian cell is:
(A) mRNA
(B) rRNA
(C) snoRNA
(D) tRNA
Correct Answer: (B). rRNA
Explanation:
Ribosomal RNA (rRNA) constitutes about 80% of the total RNA in a cell. It is a key
component of ribosomes, where protein synthesis occurs. In contrast, messenger RNA
(mRNA) and transfer RNA (tRNA) make up smaller proportions and serve as intermediaries
in protein synthesis.
Quick Tip
rRNA forms the structural and functional framework of ribosomes, which catalyze pep-
tide bond formation.
4. Which organelle in a eukaryotic cell is the site of the electron transport chain?
(A) Endoplasmic reticulum
(B) Golgi apparatus
(C) Mitochondrion
(D) Peroxisome
Correct Answer: (C). Mitochondrion
3
Explanation:
The electron transport chain is a series of protein complexes embedded in the inner
mitochondrial membrane. These complexes transfer electrons and pump protons to create an
electrochemical gradient, driving ATP synthesis. Other organelles, like the Golgi apparatus
or peroxisomes, are not involved in this process.
Quick Tip
The mitochondrion is often called the ”powerhouse of the cell” because of its role in
ATP production.
5. RNA is a polymer of:
(A) Glycosides
(B) Ribonucleosides
(C) Ribonucleotides
(D) Riboses
Correct Answer: (C). Ribonucleotides
Explanation:
RNA is composed of ribonucleotides, each containing a ribose sugar, a phosphate group, and
a nitrogenous base (adenine, uracil, cytosine, or guanine). This structure forms the backbone
of RNA, enabling its various functions in cells, including protein synthesis.
Quick Tip
RNA differs from DNA by having uracil instead of thymine and ribose sugar instead of
deoxyribose.
6. Which one of the following is present in a bacterial cell?
(A) 28S rRNA
(B) 70S ribosome
(C) Chitinous cell wall
4
Page 5


IIT JAM 2024 Biotechnology Question Paper with Solution
Time Allowed :3 Hours Maximum Marks :100 Total Questions :60
General Instructions
Read the following instructions very carefully and strictly follow them:
1. The examination duration is 3 Hours. Manage your time effectively to attempt all
questions within this period.
2. The total marks for this examination are 100. Aim to maximize your score by
strategically answering each question.
3. There are 60 mandatory questions to be attempted in the paper. Ensure that all
questions are answered.
4. Questions may appear in a shuffled order . Do not assume a fixed sequence and
focus on each question as you proceed.
5. The marking of answers will be displayed as you answer. Use this feature to
monitor your performance and adjust your strategy as needed.
6. You may mark questions for review and edit your answers later. Make sure to
allocate time for reviewing marked questions before final submission.
7. Be aware of the detailed section and sub-section guidelines provided in the exam.
Understanding these will aid in effectively navigating the exam.
1
Section A
Q.1 – Q.10 Carry ONE mark each
1. Which one of the following is a simple tissue system in plants?
(A) Epidermis
(B) Parenchyma
(C) Phloem
(D) Xylem
Correct Answer: (A). Epidermis
Explanation:
Simple tissues consist of one type of cell. Epidermis is a simple tissue that forms the outer
protective covering of plants, helping prevent water loss and providing protection against
mechanical injury. Complex tissues like xylem and phloem, however, are composed of more
than one type of cell.
Quick Tip
Epidermis, being a simple tissue, is distinct from complex tissues such as xylem and
phloem, which transport water and nutrients.
2. In DNA replication, the Okazaki fragments are joined by:
(A) DNA helicase
(B) DNA ligase
(C) DNA polymerase
(D) DNA primase
Correct Answer: (B). DNA ligase
Explanation:
Okazaki fragments are short DNA segments synthesized on the lagging strand during
replication. DNA ligase plays a critical role by sealing nicks between these fragments to
2
form a continuous DNA strand. Other enzymes like helicase and primase have distinct roles,
such as unwinding DNA and synthesizing primers, respectively.
Quick Tip
Remember, DNA ligase acts like ”molecular glue” to ensure DNA integrity.
3. The most abundant type of RNA in a metabolically active mammalian cell is:
(A) mRNA
(B) rRNA
(C) snoRNA
(D) tRNA
Correct Answer: (B). rRNA
Explanation:
Ribosomal RNA (rRNA) constitutes about 80% of the total RNA in a cell. It is a key
component of ribosomes, where protein synthesis occurs. In contrast, messenger RNA
(mRNA) and transfer RNA (tRNA) make up smaller proportions and serve as intermediaries
in protein synthesis.
Quick Tip
rRNA forms the structural and functional framework of ribosomes, which catalyze pep-
tide bond formation.
4. Which organelle in a eukaryotic cell is the site of the electron transport chain?
(A) Endoplasmic reticulum
(B) Golgi apparatus
(C) Mitochondrion
(D) Peroxisome
Correct Answer: (C). Mitochondrion
3
Explanation:
The electron transport chain is a series of protein complexes embedded in the inner
mitochondrial membrane. These complexes transfer electrons and pump protons to create an
electrochemical gradient, driving ATP synthesis. Other organelles, like the Golgi apparatus
or peroxisomes, are not involved in this process.
Quick Tip
The mitochondrion is often called the ”powerhouse of the cell” because of its role in
ATP production.
5. RNA is a polymer of:
(A) Glycosides
(B) Ribonucleosides
(C) Ribonucleotides
(D) Riboses
Correct Answer: (C). Ribonucleotides
Explanation:
RNA is composed of ribonucleotides, each containing a ribose sugar, a phosphate group, and
a nitrogenous base (adenine, uracil, cytosine, or guanine). This structure forms the backbone
of RNA, enabling its various functions in cells, including protein synthesis.
Quick Tip
RNA differs from DNA by having uracil instead of thymine and ribose sugar instead of
deoxyribose.
6. Which one of the following is present in a bacterial cell?
(A) 28S rRNA
(B) 70S ribosome
(C) Chitinous cell wall
4
(D) Histones
Correct Answer: (B). 70S ribosome
Explanation:
Bacteria possess 70S ribosomes, which are smaller than the 80S ribosomes found in
eukaryotes. They lack chitinous cell walls, which are characteristic of fungi, and histones,
which are associated with eukaryotic chromatin.
Quick Tip
70S ribosomes in bacteria are composed of a 50S large subunit and a 30S small subunit.
7. Which color of light excites a natural GFP to emit green fluorescence?
(A) Blue
(B) Green
(C) Infrared
(D) Red
Correct Answer: (A). Blue
Explanation:
Green fluorescent protein (GFP) absorbs blue light and emits green fluorescence due to its
specific chromophore structure.
Quick Tip
GFP is widely used in molecular biology as a reporter gene to visualize protein local-
ization and expression.
8. Which one of the following hormones promotes fruit ripening?
(A) Abscisic acid
(B) Auxin
(C) Ethylene
(D) Gibberellin
5