AP SET Life Sciences Exam Paper 2 - English

The random errors associated with the measurement of P and Q are 10% and 2%, respectively. What is the percentage random error in P/Q?

In how many distinguishable ways can the letters of the word CHANCE be arranged?

Find out the missing pattern.

Seeds when soaked in water gain about 20% by weight and 10% by volume. By what factor does the density increase?

Retarding frictional force f on a moving ball, is proportional to it velocity, V. Two identical balls roll down identical slopes (A & B) from different heightsheights. Compare the retarding forces and the velocities of the balls at the bases of the slopes.

Choose the most appropriate pH at which the net charge is zero for the molecule from the data shown below :

Choose the correct statement about peptides in the Ramachandran plot.

Equilibrium constant (K'eq) of a reaction is a ratio of product to substrate concentrations. The relation between (K'eq) and free energy change in a reaction (G') is as follows 
G' = –RT ln K'eq
Reaction A and Reaction B have K'eq values of 10 and 100,respectively. Which of the following statements is correct with respect to G'?

Excess oxygen consumed after a vigorous exercise is

Which one of the following describes the primary function of flippases?

From the following statements
1. Hydrogen, Deuterium and Tritium differ in the number of protons.
2. Hydrogen, Deuterium and Tritium differ in the number of neutrons.
3. Both Deuterium and Tritium are radioactive and decay to Hydrogen and Deuterium, respectively.
4. Tritium is radioactive and decays to Helium.
5. Carbon-14 decays to Nitrogen-14.
6. Carbon-14 decays to Carbon-13.
Pick the combination with ALL correct statements. 

From the following statements,
1. For a reaction to occur spontaneously the free energy change must be negative.
2. The interaction between two nitrogen molecules in the gaseous state is predominantly electrostatic.    
3. By knowing bond energies, it is possible to deduce whether the bond is covalent bond or hydrogen bond.
4. Hydrophobic interactions are not important in a folded globular protein.
Pick the combination with ALL WRONG statements. 

The following are four statements on peptide/protein conformation :
1. Glycine has the largest area of con-formationally allowed space in the Ramachandran plot of f and Y
2. A 20-residue peptide that is acetylated at the N-terminus and amidated at the C-terminus has f = –60°(±5), Y = –30°(±5) for all the residues. It can be concluded that conformation of the peptide is helix-turn-strand.
3. The allowed values of f, Y for amino acids in a protein are not valid for short perptides.
4. A peptide Acetyl-A1-A2-A3-A4-CONH2 (A1-A4 are amino acids) adopts a well defined b-turn. The dihedral angles of A2 and A3 determine the type of b-turn.
 Choose the combination of correct statements. 

A researcher investigated a set of conditions for a protein with an isoelectric point of 6.5 and also binds to calcium. This protein was subjected to four independent treatments: (i) pH 6.4, (ii) 10% glycerol, (iii) 10 mM CaCl2, (iv) 40% ammonium sulphate. This was followed by centrifugation and estimation of the protein in the supernatant. The results are depicted in the graph below : Which of the following treatments best represents the results shown in the graph?

In the biosynthesis of purine :
 

A granite block of  2 m x 5 m x 3 m size is cut into  5 cm  thick slabs of  2 m x 5 m size. These slabs are laid over a 2 m  wide pavement. What is the length of the pavement that can be covered with these slabs?

Which is the least among the following?  0.33^0.33 ,    0.44^0.44 ,    ^-1/ ,  e^-1/e

What is the  next number in this "see and tell"  sequence? 
1   11     21      1211       111221____

A peacock perched on the top a 12 m high tree spots a snake moving towards its hole at the base of the tree from a distance to thrice the height of the tree. The peacock flies towards the snake in a straight line and they both move at the same speed. At what distance from the base of the tree will the peacock catch the snake?

The cities of a country are connected by intercity roads. If a city is directly connected to an odd number of other cities, it is called an odd city. If a city is directly connected to an even number of other cities, it is called an even city. Then which of the  following is impossible?

In the given figure, the area of the shaded region (in cm² ), is :

The angels of a right-angled triangle shaped garden are in arithmetic progression and the smallest side is 10.00 m.  The total length of the fencing of the garden in m is

AB is the diameter of the semicircle as shown in the diagram. If AQ = 2AP then which of the  following is correct? 

The rabbit population in community A increases at 25% per year while that in B increases at 50% per year. If the present populations of A and  B are equal, the ratio of the number of the rabbits in B to that in A  after 2 years will be

Two moles each of O2 and H2 are in two separate containers, each of volume V0 and  at 150°C and  1 atmosphere. The two are made to react in a third container to form water vapour until H2 is exhausted. When the temperature of the mixture in the  third container was restored to  150°C,  its pressure became 1 atmosphere. The volume of the third container must be

A 16.2 m long wooden log has a uniform diameter of 2 m. To what length the log should be cut to obtain a piece of 22 m³ volume?

What  is the last digit of 773?

A lucky man finds 6 pots of gold coins. He counts the coins in the first four pots to be  60, 30, 20 and  15, respectively. If there is a definite progression, what would be the numbers of coins in the next two pots?

A bee leaves its hive in the morning and after flying for 30 minutes due south reaches a garden and spends 5 minutes collecting honey. Then it flies for 40 minutes due west and  collects honey in another garden for 10 minutes.  This it returns to the  hive taking the shortest route. How long was the  bee away from its hive?  (Assume that the bee flies at constant speed)

A bird perched at the  top of a 12 m high tree sees a centipede moving towards the base of the tree from a distance equal to  twice the height of the tree. The bird flies along a straight line of catch the centipede. If both move at the same speed, at what distance from the base of the tree will the centipede be picked up by the bird? 

Marks obtained by two students  S1 and  S2 in a four semester course are plotted in following graph  Which of the following statements is true?

The prices of diamond having a particular color and clarity are tabulated below :

How many digits are there in  , 2¹⁷ x 3² x 5¹⁴ x 7 ?

A man on the equator moves along O° longitude up to 45° N.  then turns east and moves up to 90° E,  and returns to the equator along 90° E.  The distance covered in multiples of Earth's radius R is 

On a semi-circle of diameter 10 m drawn on a horizontal ground are standing 4 boys A, B,  C and  D with distance AB = BC = CD. The length of the line-segment joining A and  B is

 A cart wheel rolls along a straight line. If the distance covered is equal to the diameter of the wheel,  what is the angle through which the wheel has turned?

In a class of  10 students,  3 failed in History, 6 failed in Geography and failed in both. How many passed in the subjects?

As shown in the diagram above, a sphere is placed on the top of an incline. It rolls down the incline without slipping in exactly  50 turns. The radius of the sphere is

A set of concentric circles of integer radii 1,2,....N is shown in the figure above. An ant starts at point A₁, goes round the first circle, returns to A₁, moves to A₂, goes round the second circle, returns to A₂, moves to A₃ and  repeats this until it reaches A_N.  The distance covered by the ant is

The figure above shows an infinite series of triangles, in which  r ₁ > r ₂ > r ₃ .... What is the total length of the solid line segments in the figure? 

 Every month the price of a particular commodity falls in this order : 1024, 640, 250, ...........  What is the next value?

A  cubicle piece of wood was filed to make it into the largest possible sphere. What fraction of the original volume was removed?

Three volumes of a Hindi book, identical in shape and size, are next to each other in a shelf, all upright, so that their spines are visible, left to right : I,  II and  III. A worm starts eating from the outside front cover of volume I,  and  eats its way horizontally to the outside back cover of volume  III. What is the distance travelled by the worm, if each volume is  6 cm  thick?

What is the area of the triangle bounded by the lines  y = 2x, y = - 2x and  y = 6 ?

A 2.2 m  wide rectangular steel plate is corrugated as shown in the diagram. Each corrugation is a semi-circle in cross section having a diameter of  7 cm.  What will be the width of steel after it is corrugated?

In each of the following groups of words is a hidden number, based on which you should arrange them in ascending order. Pick the right answer :
1.   Tinsel event
2.   Man in England
3.  Good height
4.   Last encounter

Let m and n be two positive integers such that  m + n + mn = 118 , Then the value of  m + n is

AB  is the diameter of a circle. The chord CD is perpendicular to AB intersecting it at P. If CP = 2 and  PB = 1, the radius of the circle is  :

What is angle x in the schematic diagram given below  ?

From a group of 40 players,  a cricket team of 11 players is chose. The, one of the eleven is chose as the captain of the team. The total number of ways this can done is  [ below means the number of ways  n objects can be chosen from  m  objects ] 

In each of the following groups of words is a hidden number,  based on which you should arrange them in descending order. Pick the correct answer :
E.  Papers  I  xeroxed
F.  Wi - Fi  veteran
G.  Yourself  ourselves
H.  Breaks even

Count the number of squares in the given figure.

A  shopkeeper purchases a product for Rs 100 and  sells it making a profit of 10% . The customer resells it to the same shopkeeper incurring a loss of  10% . In these dealing the shopkeeper makes :

Five congruent rectangles are drawn inside a big rectangle of perimeter  165  as shown. What is the perimeter of one of the five rectangles?

A person walks downhill at 10 km/h. If the 6km/h and  on the plane at  7.5 km/h. If the person takes 3 hours to go from a place A to another place  B,  and  1 hour on the way back,  the distance between  A and  B is :

An infinite number of identical circular discs each of radius   tightly packed such that the centres of the discs are at integer values of coordinates x and y.  The ratio of the area of the uncovered patches to the total area is  :

It takes  5 days for a steamboat to travel from  A to B along a river.  It takes  7 days to return from B to A. How many days will it take for a raft to drift from A to B ( all speeds stay constant)?

" My friend Raju has more than 1000 books ", said Ram. " Oh no, he has less than  1000 books ", said Shyam. " Well,  Raju certainly has at least one book ", said Geeta.  If only one of these statements is true,  how books does  Raju  have?

Of the following, which is the odd one out?

A student appearing for an exam is declared to have failed the exam if his/her score is less than half the median score.  This implies

When Ramesh was at the age of 8 years, he hammered a nail into a large tree to mark his height. If the tree grows 2 cm/year, how much higher would the nail be after 6 years?

The molar fraction of hydrochloric acid extremely dilute aqueous solution is The pH of the resulting solution is-

Approximately how much blood flows the through a normal human heart beating 70 times per minute, having a relaxed volume 110 cc and compressed volume of 70cc?

A leaf appears green in daylight. If this leaf were observed in red light, what colour would It appear to have?

The distance from Nehrunagar to Gandhinagar is 27 km. A and B start walking from Nehrunagar towards Gandhinagar speeds of 5 km/hr and 7 km/hr, respectively. B reaches Gandhinagar, return immediately, and meets A at Indiranagar. What is the distance between Nehrunagar and Indiranagar?(assume all three cities to be in one straight line)

AB is the diameter of a circle. The chord CD is perpendicular to AB intersecting it at P. If CP = 2 and PB = 1, the radius of the circle is :


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A shopkeeper purchases a product for Rs.100 and sells it making a profit of 10 %. The customer resells it to the same shopkeeper incurring a loss of 10 %. In these dealings the shopkeeper makes :

The product of the perimeter of a triangle, the radius of its in-circle, and a number gives the area of the triangle. The number is :

Starting from a point A you fly one mile south, then one mile east, then one mile north which brings you back to point A. Which of the following MUST be true ?

Three boxes are coloured red, blue and green and so are three balls. In how many ways can one put the balls one in each box such that no ball goes into the box of its own colour ?

There are two buckets A and B. Initially A has 2 litres of water and B is empty. At every hour 1 litre of water is transferred from A to B followed by returning 1/2 litre back to A from B half an hour later. The earliest A will get empty in :

Density of a rice grain is 1.5g/cc and bulk density of rice heap is 0.80 g/cc. If a 1 litre container is completely filled with rice, what will be the approximate volume of pore space in the container ?

What is the minimum number of moves required to transform figure 1 to figure 2 ? A move is defined as removing a coin and placing it such that it touches two other coins in its new position .


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It takes 5 days for a steamboat to travel from A to B along a river. It takes 7 days to return from B to A. How many days will it take for a raft to drift from A to B (assuming all speed are constant) ?

How many times starting at 1: 00 pm would the minute and hour hands of a clock make an angle of 40° with each other in the next 6 hours ?

The graph shows cumulative frequency, percentage of research scholars and the number of papers published by them. Which of the following statements is true ?


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The random errors associated with the measurement of P and Q are 10 % and 2%. respectively. What is the maximum percentage random error in P/Q ?

If a person travels x % faster than normal, he reaches y minutes earlier than normal. What is his normal time of travel ?

Pre - Ph.D exam score of 10 students are plotted against their M.Sc. marks. Which of the following is true ?


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What is the average value of y for the range of x shown in the following plot ?


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A fair die was thrown three times and the outcome was repeatedly six. If the die is thrown again what is the probability of getting six ?

What is the volume of soil in an open pit of size 2 m × 2 m × 10 cm ?

If a plant with green leaves is kept in a dark room with only green light on, which one of the following would we observe ?

The distance from city P to city Q is 27 km. A and B start walking from P towards Q at speeds of 5 km/hr and 7 km/hr, respectively. B reaches Q, returns immediately, and meets A at R. What is the distance between Pand R ? (assume all three cities to be in one straight line)

A floor of size 13 x 24 is to be paved using square tiles only. What is the smallest number of tiles needed to do this ?

Following statements are made about uncompetitive inhibition of an enzyme :
(a) Uncompetitive inhibitor binds to both free enzyme as well as an enzyme - substrate complex.
(b) Addition of uncompetitive inhibitor lowers the V_max of the reaction.
(c) Apparent K_M of the enzyme is lowered.
(d) Apparent K_M of the enzyme remains unchanged.
Which one of the following option represents the correct combination of the statments ?

Following are the pKa's of the ionizable groups in lysine :
pKa₁ = 2.16 (α – carboxylic group)
pKa₂ = 9.06(α – amino group)
pKa₃ = 10.54(ε – amino group)
Which one of the following options represents the pl of lysine ?

The enzyme alkaline phosphatase was tested for its catalytic activity using the substrate para-nitrophenylphosphate. The K_M obtained was 10 mM and V_max was 100 µ mol/min. Which one of the following options represents the initial velocity of the reaction at a substrate concentration of 10 mM?

How many hydrogen bonds involving the backbone CO and NH can be observed in an α - helix consisting, of 15 amino acid residues ?

Progression across Gl/S boundary followed by entry into S-phase is promoted by the activation of which one of the following protein complexes?

In eukaryotic cells, covalently attached lipids help to anchor some water soluble proteins to the plasma membrane. One group of cytosolic proteins are anchored to the cytosolic face of membrane by a fatty acyl group (e.g. myristate or palmitate). These groups are generally covalently attached to which amino acids present at the N-terminus of the polypeptide chain ?

The movement of proteins bigger than 50 kDa across the nuclear envelope requires :

Iron - sulphur clusters [Fe - S] are the key prosthetic groups that carry electrons in all of the below EXCEPT :

In bacteria many of the tRNA genes do not contain the CCA sequence found at the 3' end of tRNA. In this context which one of the following statements represents the correct explanation ?

Some cells possess peptides which contain D-form of amino acids. How do they arise ?

All of the following statements about bacterial transcription termination are true EXCEPT :

Which one of the following proteins is essential for both the initiation of DNA replication as well as the continued advance of the replication fork ?

Which one of the following combinations represents the major protein or protein complex involved in chromatin condensation in yeast and human, respectively ?

Which of the following is the causative agent of filariasis ?

The cytoplasmic domain of the receptor of which of the following proteins does NOT function as tyrosine kinase ?