IIT JAM 2020 Biotechnology Question Paper without Solution | Mock Test Series of IIT JAM Biotechnology 2026 - Biotechnology Engineering (BT) PDF Download

 Page 1


JAM 2020  BIOTECHNOLOGY - BT 
BT 1/13 
Paper Specific Instructions 
 
1. The examination is of 3 hours duration. There are a total of 60 questions carrying 100 marks. The entire 
paper is divided into three sections, A, B and C. All sections are compulsory. Questions in each section are 
of different types. 
 
2. Section – A contains a total of 30 Multiple Choice Questions (MCQ). Each MCQ type question has four 
choices out of which only one choice is the correct answer. Questions Q.1 – Q.30 belong to this section and 
carry a total of 50 marks. Q.1 – Q.10 carry 1 mark each and Questions Q.11 – Q.30 carry 2 marks each. 
 
3. Section – B contains a total of 10 Multiple Select Questions (MSQ). Each MSQ type question is similar to 
MCQ but with a difference that there may be one or more than one choice(s) that are correct out of the four 
given choices. The candidate gets full credit if he/she selects all the correct answers only and no wrong 
answers. Questions Q.31 – Q.40 belong to this section and carry 2 marks each with a total of 20 marks. 
 
4. Section – C contains a total of 20 Numerical Answer Type (NAT) questions. For these NAT type questions, 
the answer is a real number which needs to be entered using the virtual keyboard on the monitor. No choices 
will be shown for these type of questions. Questions Q.41 – Q.60 belong to this section and carry a total of 
30 marks. Q.41 – Q.50 carry 1 mark each and Questions Q.51 – Q.60 carry 2 marks each.  
 
5. In all sections, questions not attempted will result in zero mark. In Section – A (MCQ), wrong answer will 
result in NEGATIVE marks. For all 1 mark questions, 1/3 marks will be deducted for each wrong answer. 
For all 2 marks questions, 2/3 marks will be deducted for each wrong answer. In Section – B (MSQ), there 
is NO NEGATIVE and NO PARTIAL marking provisions. There is NO NEGATIVE marking in Section 
– C (NAT) as well. 
 
6. Only Virtual Scientific Calculator is allowed. Charts, graph sheets, tables, cellular phone or other 
electronic gadgets are NOT allowed in the examination hall. 
 
 
7. The Scribble Pad will be provided for rough work. 
 
 
 
 
 
  
Page 2


JAM 2020  BIOTECHNOLOGY - BT 
BT 1/13 
Paper Specific Instructions 
 
1. The examination is of 3 hours duration. There are a total of 60 questions carrying 100 marks. The entire 
paper is divided into three sections, A, B and C. All sections are compulsory. Questions in each section are 
of different types. 
 
2. Section – A contains a total of 30 Multiple Choice Questions (MCQ). Each MCQ type question has four 
choices out of which only one choice is the correct answer. Questions Q.1 – Q.30 belong to this section and 
carry a total of 50 marks. Q.1 – Q.10 carry 1 mark each and Questions Q.11 – Q.30 carry 2 marks each. 
 
3. Section – B contains a total of 10 Multiple Select Questions (MSQ). Each MSQ type question is similar to 
MCQ but with a difference that there may be one or more than one choice(s) that are correct out of the four 
given choices. The candidate gets full credit if he/she selects all the correct answers only and no wrong 
answers. Questions Q.31 – Q.40 belong to this section and carry 2 marks each with a total of 20 marks. 
 
4. Section – C contains a total of 20 Numerical Answer Type (NAT) questions. For these NAT type questions, 
the answer is a real number which needs to be entered using the virtual keyboard on the monitor. No choices 
will be shown for these type of questions. Questions Q.41 – Q.60 belong to this section and carry a total of 
30 marks. Q.41 – Q.50 carry 1 mark each and Questions Q.51 – Q.60 carry 2 marks each.  
 
5. In all sections, questions not attempted will result in zero mark. In Section – A (MCQ), wrong answer will 
result in NEGATIVE marks. For all 1 mark questions, 1/3 marks will be deducted for each wrong answer. 
For all 2 marks questions, 2/3 marks will be deducted for each wrong answer. In Section – B (MSQ), there 
is NO NEGATIVE and NO PARTIAL marking provisions. There is NO NEGATIVE marking in Section 
– C (NAT) as well. 
 
6. Only Virtual Scientific Calculator is allowed. Charts, graph sheets, tables, cellular phone or other 
electronic gadgets are NOT allowed in the examination hall. 
 
 
7. The Scribble Pad will be provided for rough work. 
 
 
 
 
 
  
JAM 2020  BIOTECHNOLOGY - BT 
BT 2/13 
SECTION – A 
MULTIPLE CHOICE QUESTIONS (MCQ) 
Q. 1 – Q.10 carry one mark each. 
 
Q.1  Deficiency of the enzyme phenylalanine hydroxylase causes Phenylketonuria. Phenylalanine 
hydroxylase converts phenylalanine to 
(A) tryptophan (B) alanine (C)  tyrosine (D)  threonine 
 
 
Q.2  T cells and B cells are 
(A) lymphocytes (B) erythrocytes (C)  epithelial cells (D)  squamous cells 
 
 
Q.3  In humans, the testis temperature is maintained below the core body temperature with the 
help of 
(A) proximal tubule 
(B) loop of Henle 
(C) scrotum 
(D) seminal vesicles 
 
 
Q.4  Protein that helps other proteins to fold correctly is 
(A) chaperone 
(B) proteasome 
(C) ubiquitin 
(D) desmosome 
 
 
Q.5  The CORRECT sequence of phases during mitosis is 
 
(A) prophase, metaphase, anaphase, telophase 
(B) prophase, anaphase, metaphase, telophase 
(C) anaphase, prophase, metaphase, telophase 
(D) anaphase, metaphase, prophase, telophase 
 
 
Q.6  
The curve 
4 3 2
4 4 4 y x x x ? ? ? ? has tangents parallel to the x-axis at the following points 
? ? , xy 
(A) (1, 4), (-2, 2) ?????? (0, -1) 
(B) (0, -4), (2, -4) ?????? (1, -3) 
(C) (-1, 2), (-2, 1) ?????? (1, -2) 
(D) (1, -4), (1, -3) ?????? (2, -4) 
 
 
Q.7  In viruses, capsids are made up of 
(A) proteins (B) nucleic acids (C)  lipids (D) sterols  
 
Page 3


JAM 2020  BIOTECHNOLOGY - BT 
BT 1/13 
Paper Specific Instructions 
 
1. The examination is of 3 hours duration. There are a total of 60 questions carrying 100 marks. The entire 
paper is divided into three sections, A, B and C. All sections are compulsory. Questions in each section are 
of different types. 
 
2. Section – A contains a total of 30 Multiple Choice Questions (MCQ). Each MCQ type question has four 
choices out of which only one choice is the correct answer. Questions Q.1 – Q.30 belong to this section and 
carry a total of 50 marks. Q.1 – Q.10 carry 1 mark each and Questions Q.11 – Q.30 carry 2 marks each. 
 
3. Section – B contains a total of 10 Multiple Select Questions (MSQ). Each MSQ type question is similar to 
MCQ but with a difference that there may be one or more than one choice(s) that are correct out of the four 
given choices. The candidate gets full credit if he/she selects all the correct answers only and no wrong 
answers. Questions Q.31 – Q.40 belong to this section and carry 2 marks each with a total of 20 marks. 
 
4. Section – C contains a total of 20 Numerical Answer Type (NAT) questions. For these NAT type questions, 
the answer is a real number which needs to be entered using the virtual keyboard on the monitor. No choices 
will be shown for these type of questions. Questions Q.41 – Q.60 belong to this section and carry a total of 
30 marks. Q.41 – Q.50 carry 1 mark each and Questions Q.51 – Q.60 carry 2 marks each.  
 
5. In all sections, questions not attempted will result in zero mark. In Section – A (MCQ), wrong answer will 
result in NEGATIVE marks. For all 1 mark questions, 1/3 marks will be deducted for each wrong answer. 
For all 2 marks questions, 2/3 marks will be deducted for each wrong answer. In Section – B (MSQ), there 
is NO NEGATIVE and NO PARTIAL marking provisions. There is NO NEGATIVE marking in Section 
– C (NAT) as well. 
 
6. Only Virtual Scientific Calculator is allowed. Charts, graph sheets, tables, cellular phone or other 
electronic gadgets are NOT allowed in the examination hall. 
 
 
7. The Scribble Pad will be provided for rough work. 
 
 
 
 
 
  
JAM 2020  BIOTECHNOLOGY - BT 
BT 2/13 
SECTION – A 
MULTIPLE CHOICE QUESTIONS (MCQ) 
Q. 1 – Q.10 carry one mark each. 
 
Q.1  Deficiency of the enzyme phenylalanine hydroxylase causes Phenylketonuria. Phenylalanine 
hydroxylase converts phenylalanine to 
(A) tryptophan (B) alanine (C)  tyrosine (D)  threonine 
 
 
Q.2  T cells and B cells are 
(A) lymphocytes (B) erythrocytes (C)  epithelial cells (D)  squamous cells 
 
 
Q.3  In humans, the testis temperature is maintained below the core body temperature with the 
help of 
(A) proximal tubule 
(B) loop of Henle 
(C) scrotum 
(D) seminal vesicles 
 
 
Q.4  Protein that helps other proteins to fold correctly is 
(A) chaperone 
(B) proteasome 
(C) ubiquitin 
(D) desmosome 
 
 
Q.5  The CORRECT sequence of phases during mitosis is 
 
(A) prophase, metaphase, anaphase, telophase 
(B) prophase, anaphase, metaphase, telophase 
(C) anaphase, prophase, metaphase, telophase 
(D) anaphase, metaphase, prophase, telophase 
 
 
Q.6  
The curve 
4 3 2
4 4 4 y x x x ? ? ? ? has tangents parallel to the x-axis at the following points 
? ? , xy 
(A) (1, 4), (-2, 2) ?????? (0, -1) 
(B) (0, -4), (2, -4) ?????? (1, -3) 
(C) (-1, 2), (-2, 1) ?????? (1, -2) 
(D) (1, -4), (1, -3) ?????? (2, -4) 
 
 
Q.7  In viruses, capsids are made up of 
(A) proteins (B) nucleic acids (C)  lipids (D) sterols  
 
JAM 2020  BIOTECHNOLOGY - BT 
BT 3/13 
 
 
 
Q.8  The common component in crustacean exoskeleton and fungal cell wall is 
(A) lignin (B) cellulose (C)  chitin (D)  peptidoglycan 
 
 
Q.9  The CORRECT sequence of evolution (simplest to complex) is 
(A) algae, bryophytes, ferns, angiosperms 
(B) algae, ferns, bryophytes, angiosperms 
(C) bryophytes, ferns, algae, angiosperms 
(D) bryophytes, algae, ferns, angiosperms 
 
 
Q.10  For an ideal gas at room temperature, choose the CORRECT representation(s) of 
Boyle’s Law. 
(P = Pressure, V = Volume, T = Temperature) 
 
 
(A) only (i)  (B) both (ii) and (iii) (C) only (iii) (D) both (iii) and (iv) 
 
 
 
Page 4


JAM 2020  BIOTECHNOLOGY - BT 
BT 1/13 
Paper Specific Instructions 
 
1. The examination is of 3 hours duration. There are a total of 60 questions carrying 100 marks. The entire 
paper is divided into three sections, A, B and C. All sections are compulsory. Questions in each section are 
of different types. 
 
2. Section – A contains a total of 30 Multiple Choice Questions (MCQ). Each MCQ type question has four 
choices out of which only one choice is the correct answer. Questions Q.1 – Q.30 belong to this section and 
carry a total of 50 marks. Q.1 – Q.10 carry 1 mark each and Questions Q.11 – Q.30 carry 2 marks each. 
 
3. Section – B contains a total of 10 Multiple Select Questions (MSQ). Each MSQ type question is similar to 
MCQ but with a difference that there may be one or more than one choice(s) that are correct out of the four 
given choices. The candidate gets full credit if he/she selects all the correct answers only and no wrong 
answers. Questions Q.31 – Q.40 belong to this section and carry 2 marks each with a total of 20 marks. 
 
4. Section – C contains a total of 20 Numerical Answer Type (NAT) questions. For these NAT type questions, 
the answer is a real number which needs to be entered using the virtual keyboard on the monitor. No choices 
will be shown for these type of questions. Questions Q.41 – Q.60 belong to this section and carry a total of 
30 marks. Q.41 – Q.50 carry 1 mark each and Questions Q.51 – Q.60 carry 2 marks each.  
 
5. In all sections, questions not attempted will result in zero mark. In Section – A (MCQ), wrong answer will 
result in NEGATIVE marks. For all 1 mark questions, 1/3 marks will be deducted for each wrong answer. 
For all 2 marks questions, 2/3 marks will be deducted for each wrong answer. In Section – B (MSQ), there 
is NO NEGATIVE and NO PARTIAL marking provisions. There is NO NEGATIVE marking in Section 
– C (NAT) as well. 
 
6. Only Virtual Scientific Calculator is allowed. Charts, graph sheets, tables, cellular phone or other 
electronic gadgets are NOT allowed in the examination hall. 
 
 
7. The Scribble Pad will be provided for rough work. 
 
 
 
 
 
  
JAM 2020  BIOTECHNOLOGY - BT 
BT 2/13 
SECTION – A 
MULTIPLE CHOICE QUESTIONS (MCQ) 
Q. 1 – Q.10 carry one mark each. 
 
Q.1  Deficiency of the enzyme phenylalanine hydroxylase causes Phenylketonuria. Phenylalanine 
hydroxylase converts phenylalanine to 
(A) tryptophan (B) alanine (C)  tyrosine (D)  threonine 
 
 
Q.2  T cells and B cells are 
(A) lymphocytes (B) erythrocytes (C)  epithelial cells (D)  squamous cells 
 
 
Q.3  In humans, the testis temperature is maintained below the core body temperature with the 
help of 
(A) proximal tubule 
(B) loop of Henle 
(C) scrotum 
(D) seminal vesicles 
 
 
Q.4  Protein that helps other proteins to fold correctly is 
(A) chaperone 
(B) proteasome 
(C) ubiquitin 
(D) desmosome 
 
 
Q.5  The CORRECT sequence of phases during mitosis is 
 
(A) prophase, metaphase, anaphase, telophase 
(B) prophase, anaphase, metaphase, telophase 
(C) anaphase, prophase, metaphase, telophase 
(D) anaphase, metaphase, prophase, telophase 
 
 
Q.6  
The curve 
4 3 2
4 4 4 y x x x ? ? ? ? has tangents parallel to the x-axis at the following points 
? ? , xy 
(A) (1, 4), (-2, 2) ?????? (0, -1) 
(B) (0, -4), (2, -4) ?????? (1, -3) 
(C) (-1, 2), (-2, 1) ?????? (1, -2) 
(D) (1, -4), (1, -3) ?????? (2, -4) 
 
 
Q.7  In viruses, capsids are made up of 
(A) proteins (B) nucleic acids (C)  lipids (D) sterols  
 
JAM 2020  BIOTECHNOLOGY - BT 
BT 3/13 
 
 
 
Q.8  The common component in crustacean exoskeleton and fungal cell wall is 
(A) lignin (B) cellulose (C)  chitin (D)  peptidoglycan 
 
 
Q.9  The CORRECT sequence of evolution (simplest to complex) is 
(A) algae, bryophytes, ferns, angiosperms 
(B) algae, ferns, bryophytes, angiosperms 
(C) bryophytes, ferns, algae, angiosperms 
(D) bryophytes, algae, ferns, angiosperms 
 
 
Q.10  For an ideal gas at room temperature, choose the CORRECT representation(s) of 
Boyle’s Law. 
(P = Pressure, V = Volume, T = Temperature) 
 
 
(A) only (i)  (B) both (ii) and (iii) (C) only (iii) (D) both (iii) and (iv) 
 
 
 
JAM 2020  BIOTECHNOLOGY - BT 
BT 4/13 
Q. 11 – Q. 30 carry two marks each. 
 
Q.11  During El Niño, 
(A) cold water of the north flowing Peru current is displaced by a low-nutrient warm 
southward current 
(B) warm water of the north flowing Peru current is displaced by a low-nutrient cold 
southward current 
(C) cold water of the south flowing Peru current is displaced by a warm northward current 
rich in nutrients 
(D) warm water of the south flowing Peru current is displaced by a cold northward current 
rich in nutrients 
 
 
Q.12  Match the deficiency conditions in Group I with the corresponding vitamin in Group II                                    
Group I 
 
(P) Beriberi 
(Q) Scurvy 
(R) Birth defects 
(S) Night blindness 
Group II 
 
(1) Ascorbic acid 
(2) Retinol 
(3) Thiamine 
(4) Folic acid 
 
(A) P-3, Q-2, R-1, S-4 
(B) P-2, Q-3, R-4, S-1 
(C) P-3, Q-1, R-4, S-2 
(D) P-1, Q-2, R-3, S-4 
 
 
Q.13  Eutrophication refers to an aging process from a 
(A) low production ecosystem to high production ecosystem due to availability of excess 
nutrients  
(B) high production ecosystem to low production ecosystem due to nutrient deficiency 
(C) high production ecosystem to low production ecosystem due to light scarcity 
(D) low production ecosystem to high production ecosystem due to light scarcity 
 
 
Q.14  Which one of the following ions has the maximum number of unpaired electrons? 
(A) Cu
2+
 (B) Na
+
 (C)  Cr
3+
 (D)  Fe
3+
 
 
 
 
 
 
 
 
 
 
 
Page 5


JAM 2020  BIOTECHNOLOGY - BT 
BT 1/13 
Paper Specific Instructions 
 
1. The examination is of 3 hours duration. There are a total of 60 questions carrying 100 marks. The entire 
paper is divided into three sections, A, B and C. All sections are compulsory. Questions in each section are 
of different types. 
 
2. Section – A contains a total of 30 Multiple Choice Questions (MCQ). Each MCQ type question has four 
choices out of which only one choice is the correct answer. Questions Q.1 – Q.30 belong to this section and 
carry a total of 50 marks. Q.1 – Q.10 carry 1 mark each and Questions Q.11 – Q.30 carry 2 marks each. 
 
3. Section – B contains a total of 10 Multiple Select Questions (MSQ). Each MSQ type question is similar to 
MCQ but with a difference that there may be one or more than one choice(s) that are correct out of the four 
given choices. The candidate gets full credit if he/she selects all the correct answers only and no wrong 
answers. Questions Q.31 – Q.40 belong to this section and carry 2 marks each with a total of 20 marks. 
 
4. Section – C contains a total of 20 Numerical Answer Type (NAT) questions. For these NAT type questions, 
the answer is a real number which needs to be entered using the virtual keyboard on the monitor. No choices 
will be shown for these type of questions. Questions Q.41 – Q.60 belong to this section and carry a total of 
30 marks. Q.41 – Q.50 carry 1 mark each and Questions Q.51 – Q.60 carry 2 marks each.  
 
5. In all sections, questions not attempted will result in zero mark. In Section – A (MCQ), wrong answer will 
result in NEGATIVE marks. For all 1 mark questions, 1/3 marks will be deducted for each wrong answer. 
For all 2 marks questions, 2/3 marks will be deducted for each wrong answer. In Section – B (MSQ), there 
is NO NEGATIVE and NO PARTIAL marking provisions. There is NO NEGATIVE marking in Section 
– C (NAT) as well. 
 
6. Only Virtual Scientific Calculator is allowed. Charts, graph sheets, tables, cellular phone or other 
electronic gadgets are NOT allowed in the examination hall. 
 
 
7. The Scribble Pad will be provided for rough work. 
 
 
 
 
 
  
JAM 2020  BIOTECHNOLOGY - BT 
BT 2/13 
SECTION – A 
MULTIPLE CHOICE QUESTIONS (MCQ) 
Q. 1 – Q.10 carry one mark each. 
 
Q.1  Deficiency of the enzyme phenylalanine hydroxylase causes Phenylketonuria. Phenylalanine 
hydroxylase converts phenylalanine to 
(A) tryptophan (B) alanine (C)  tyrosine (D)  threonine 
 
 
Q.2  T cells and B cells are 
(A) lymphocytes (B) erythrocytes (C)  epithelial cells (D)  squamous cells 
 
 
Q.3  In humans, the testis temperature is maintained below the core body temperature with the 
help of 
(A) proximal tubule 
(B) loop of Henle 
(C) scrotum 
(D) seminal vesicles 
 
 
Q.4  Protein that helps other proteins to fold correctly is 
(A) chaperone 
(B) proteasome 
(C) ubiquitin 
(D) desmosome 
 
 
Q.5  The CORRECT sequence of phases during mitosis is 
 
(A) prophase, metaphase, anaphase, telophase 
(B) prophase, anaphase, metaphase, telophase 
(C) anaphase, prophase, metaphase, telophase 
(D) anaphase, metaphase, prophase, telophase 
 
 
Q.6  
The curve 
4 3 2
4 4 4 y x x x ? ? ? ? has tangents parallel to the x-axis at the following points 
? ? , xy 
(A) (1, 4), (-2, 2) ?????? (0, -1) 
(B) (0, -4), (2, -4) ?????? (1, -3) 
(C) (-1, 2), (-2, 1) ?????? (1, -2) 
(D) (1, -4), (1, -3) ?????? (2, -4) 
 
 
Q.7  In viruses, capsids are made up of 
(A) proteins (B) nucleic acids (C)  lipids (D) sterols  
 
JAM 2020  BIOTECHNOLOGY - BT 
BT 3/13 
 
 
 
Q.8  The common component in crustacean exoskeleton and fungal cell wall is 
(A) lignin (B) cellulose (C)  chitin (D)  peptidoglycan 
 
 
Q.9  The CORRECT sequence of evolution (simplest to complex) is 
(A) algae, bryophytes, ferns, angiosperms 
(B) algae, ferns, bryophytes, angiosperms 
(C) bryophytes, ferns, algae, angiosperms 
(D) bryophytes, algae, ferns, angiosperms 
 
 
Q.10  For an ideal gas at room temperature, choose the CORRECT representation(s) of 
Boyle’s Law. 
(P = Pressure, V = Volume, T = Temperature) 
 
 
(A) only (i)  (B) both (ii) and (iii) (C) only (iii) (D) both (iii) and (iv) 
 
 
 
JAM 2020  BIOTECHNOLOGY - BT 
BT 4/13 
Q. 11 – Q. 30 carry two marks each. 
 
Q.11  During El Niño, 
(A) cold water of the north flowing Peru current is displaced by a low-nutrient warm 
southward current 
(B) warm water of the north flowing Peru current is displaced by a low-nutrient cold 
southward current 
(C) cold water of the south flowing Peru current is displaced by a warm northward current 
rich in nutrients 
(D) warm water of the south flowing Peru current is displaced by a cold northward current 
rich in nutrients 
 
 
Q.12  Match the deficiency conditions in Group I with the corresponding vitamin in Group II                                    
Group I 
 
(P) Beriberi 
(Q) Scurvy 
(R) Birth defects 
(S) Night blindness 
Group II 
 
(1) Ascorbic acid 
(2) Retinol 
(3) Thiamine 
(4) Folic acid 
 
(A) P-3, Q-2, R-1, S-4 
(B) P-2, Q-3, R-4, S-1 
(C) P-3, Q-1, R-4, S-2 
(D) P-1, Q-2, R-3, S-4 
 
 
Q.13  Eutrophication refers to an aging process from a 
(A) low production ecosystem to high production ecosystem due to availability of excess 
nutrients  
(B) high production ecosystem to low production ecosystem due to nutrient deficiency 
(C) high production ecosystem to low production ecosystem due to light scarcity 
(D) low production ecosystem to high production ecosystem due to light scarcity 
 
 
Q.14  Which one of the following ions has the maximum number of unpaired electrons? 
(A) Cu
2+
 (B) Na
+
 (C)  Cr
3+
 (D)  Fe
3+
 
 
 
 
 
 
 
 
 
 
 
JAM 2020  BIOTECHNOLOGY - BT 
BT 5/13 
 
 
Q.15  Match the enzymes in Group I with the corresponding substrate in Group II                                             
Group I 
 
(P) Amylase 
(Q) Pepsin 
(R) Lipase 
(S) Ribozyme 
Group II 
 
(1) Protein 
(2) Fat 
(3) RNA 
(4) Starch 
 
(A) P-2, Q-3, R-1, S-4 
(B) P-4, Q-1, R-2, S-3 
(C) P-3, Q-1, R-4, S-2 
(D) P-4, Q-2, R-3, S-1 
 
 
Q.16  In ABO blood group testing, which one of the following is INCORRECT 
 
(A) A group – agglutination with anti-A antibodies 
(B) B group – agglutination with anti-B antibodies 
(C) AB group – no agglutination with either anti-A or anti-B antibodies 
(D) O group – no agglutination with either anti-A or anti-B antibodies 
 
 
Q.17  If a coin is tossed three times, what is the probability that NO two successive tosses show 
the same face? 
(A) 0.25
 
(B) 0.33
 
(C)  0.20 (D)  0.125 
 
 
Q.18  Match the RNAs in Group I with their corresponding function in Group II 
Group I 
 
(P) snRNA 
(Q) piRNA 
(R) snoRNA 
(S) siRNA 
Group II 
 
(1) rRNA processing 
(2) RNA splicing 
(3) Selected mRNAs degradation 
(4) Germ line protection from transposable elements 
 
(A) P-4, Q-3, R-2, S-1 
(B) P-4, Q-1, R-3, S-2 
(C) P-3, Q-2, R-1, S-4 
(D) P-2, Q-4, R-1, S-3 
 
 
Q.19  In a typical mammalian cell, the protein content is 20 % of its net weight. If the density and 
volume of the cell are 1.2 g/mL and 4 × 10
-9
 mL, respectively, then the concentration  
(in mg/mL) of the protein is 
(A) 60
 
(B) 600
 
(C)  166 (D)  240