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
Q.2 T cells and B cells are
Q.3 In humans, the testis temperature is maintained below the core body temperature with the
Q.4 Protein that helps other proteins to fold correctly is
Q.5 The CORRECT sequence of phases during mitosis is
Q.6 The curve y= x4-4x3+4x2-4
has tangents parallel to the x-axis at the following points ( x, y)
Q.7 In viruses, capsids are made up of
Q.8 The common component in crustacean exoskeleton and fungal cell wall is
Q.9 The CORRECT sequence of evolution (simplest to complex) is
Q.10 For an ideal gas at room temperature, choose the CORRECT representation(s) of
(P = Pressure, V = Volume, T = Temperature)
Q. 11 – Q. 30 carry two marks each.
Q.11 During El Niño,
Q.12 Match the deficiency conditions in Group I with the corresponding vitamin in Group II
Q.13 Eutrophication refers to an aging process from a
Q.14 Which one of the following ions has the maximum number of unpaired electrons?
(A) Cu2+ (B) Na+
(C) Cr3+ (D) Fe3+
Q.15 Match the enzymes in Group I with the corresponding substrate in Group II
Q.16 In ABO blood group testing, which one of the following is INCORRECT
Q.17 If a coin is tossed three times, what is the probability that NO two successive tosses show
the same face?
Q.18 Match the RNAs in Group I with their corresponding function in Group II
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
Q.21 Match the type of bacterial flagella in Group I with their definitions in Group II
Q.23 Match the diseases in Group I with their causative organisms in Group II
Q.24 Determine the correctness or otherwise of the following Assertion [a] and the Reason [r].
Assertion [a]: The difference in the respective melting points of butter and coconut oil is
caused by the degrees of saturation of the corresponding fatty acid chain.
Reason [r]: Unsaturated fatty acid chains in fats/lipids become solid more easily because they
are relatively straight and thus able to pack together more closely than saturated chain.
Q. 26 The following carboxylic acids have a general formula, R-COOH.
(ii) CH3 - COOH
(iii) ClCH2 - COOH
(iv) CF3 - COOH
Which one of the following represents the decreasing order of their respective pKa values?
Q.27 Which one of the following compounds is the simplest alkane that is optically active?
Q.28 In the following reaction, X is an intermediate and Y is one of the end products.
Q.29 Determine the correctness or otherwise of the following Assertion [a] and the Reason [r].
Assertion [a]: lac operon is an inducible operon.
Reason [r]: lac operon is not induced when the repressor protein remains bound to operator
Q.30 IR spectrum of a compound C5
O shows a band at 1715 cm-1
. The same compound showed two signals, a triplet and a quartet, in its NMR spectrum. Identify the compound from the following.
SECTION - B Q. 31 – Q. 40 carry two marks each.
MULTIPLE SELECT QUESTIONS (MSQ)
Q.31 Which of the following is(are) auxins?
Q.32 Which of the following is(are) TRUE about photosynthesis?
Q.33 Which of the following is(are) involved in the activation of cytotoxic T cells?
Q.34 DNA and RNA are acidic in nature due to the presence of
Q.35 Which of the following is(are) CORRECT?
Q.37 Which of the following curve/straight line equations will pass through the origin when
plotted on a graph?
Q.38 Consider two bodies with equal masses of 1012
kg each and R distance apart. Let G be the gravitational constant and V0
be a constant with dimensions of energy. Which of the following represent(s) gravitational potential energy (V) between the bodies, such that Newton’s law of gravitation is valid?
Q.39 Which of the following is(are) CORRECT?
Q.40 Which of the following gas(es) function(s) as signaling molecule(s) in the human nervous
SECTION – C Q. 41 – Q. 50 carry one mark each.
NUMERICAL ANSWER TYPE (NAT)
Q.41 The generation time of E. coli is 20 minutes. If there are 106
E. coli present in an
exponentially growing synchronous culture, then the average time (in minutes) required to
obtain a final population of 4×106
E. coli is ________.