At birthday, every child gets 2 chocolates, every mother gets 1 chocolates, while no fathers gets a chocolate. In total 69 persons get 70 chocolates. If the number of children is half of the total number of mothers and fathers put together, then how many fathers are there?

• 22

• 23

• 24

• 69

Following are statements on β-turns:

(a) all the 20 coded amino acids have equal propensity to form β-turns.

(b) Pro cannot occur in β-turns

(c)Pro-Gly sequence strongly favours β-turns.

(d) In Asn-Gly β-turns, Asn can have positive Φ, Ψ values.

• (b), (d)

• (a), (c)

• (a), (d)

• (c), (d)

For the following set observed values [60,65,65,70,70,70,70,82,85,90,95,95,100,160,160]

Which of the statements is true?

• mode<median<mean

• mode<mean<meadian

• mean<median<mode

• median<mode<mean

A circular running track has six lanes, each 1m wide. How far ahead 9in meters) should the runner in the outermost lane start from, so as to cover the same distance in one lap as the runner in the innermost lane?

• 6π

• 10π

• 12π

• 36π

In an examiniation 100 question of 1marks each are given. After the examination, 20 question are deleted from evaluation, leaving 80 question with a total of 100 marks. Students A had answered 4 of the deleted questions correctly and got 40 marks, whereas student B had answered 10 of the deleted questions correctly and got 35 marks. In this situation:

• A and B were equally benefitted

• A and B lost equally

• B lost more than A

• A lost more than B

A tourist drives 20km towards east, turns right drives 6km, then drives 6km towards west. He then turns to his left and drives 4km and finally turns right and drives 14 km. Where is he from his starting point? 

• 6 km towards east

• 20 km towards west

• 14 km towards north

• 10 km towards south

DNA melting temperature (T_m) was found to be 47ºC and enthalpy measured at T_m was 0.032 kJ. The entropy change would be:

• 1 × 10^-3 kJ

• 1 × 10^-4 kJ

• 3 × 10^-2 kJ

• 6 × 10^-2 kJ

Match the following bonds with their approximate energies:

(a) hydrogen bond	(i) 0.5 kcal
(b) van der waals forces	(ii) 40 kcal
(c) Covalents bond	(iii) 80 kcal
(d) Ionic bond	(iv) 3 kcal

• (a)	(b)	(c)	(d)
  (iv)	(iii)	(ii)	(i)

• (a)	(b)	(c)	(d)
  (ii)	(i)	(iii)	(iv)

• (a)	(b)	(c)	(d)
  (i)	(iv)	(ii)	(iii)

• (a)	(b)	(c)	(d)
  (iv)	(i)	(iii)	(ii)

The following are some statements regarding glycolysis:

(a) Glycolysis is not regulated by pyruvate kinase

(b) Lactate can be an end product of glycolysis

(c) Glycolysis cannot function anaerobically

(d) In erythrocytes, the second site in glycolysis for ATP generation can be bypassed.

From the above, choose the combination with both incorrect statements.

• (a) and (b)

• (b) and (d)

• (c) and (d)

• (a) and (c)

For a reversible non-competitive inhibition of an enzyme, choose the plot that you would use to determine K_m