Dr. Hariom GangwarMBBS (KGMU)
8+ yrs Teaching Experience
12:00
PM
05:00
PM
Live Class
Crash Course
Dr. Hariom GangwarM.B.B.S (KGMU)
8+ Yrs Teaching Experience
1,00,000 Student Mentored
Dr. Hariom GangwarM.B.B.S (KGMU)
8+ Yrs Teaching Experience
1,00,000 Student Mentored
Dr. Hariom GangwarM.B.B.S (KGMU)
8+ Yrs Teaching Experience
1,00,000 Student Mentored
Dr. Hariom GangwarM.B.B.S (KGMU)
8+ Yrs Teaching Experience
1,00,000 Student Mentored
Dr. Hariom GangwarM.B.B.S (KGMU)
8+ Yrs Teaching Experience
1,00,000 Student Mentored
Dr. Hariom GangwarM.B.B.S (KGMU)
8+ Yrs Teaching Experience
1,00,000 Student Mentored
Chapterwise
Questions
Biology
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The following figure shows the
(A) Action spectrum of photosynthesis
superimposed on absorption
spectrum of chlorphyll a
(B) Action spectrum of photosynthesis
superimposed on absorption
spectrum of chlorophyll b
(C) Both A & B
(D) Absorption spectrum of carotenoids
superimposed on action spectrum of
photosynthesis
01
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Which is incorrect about coenzyme
(A) Every coenzyme is a cofactor but every cofactor is
not a coenzyme
(B) Every enzyme is a cofactor and every cofactor is a
coenzyme
(C) Most of the coenzymes are nucleotides and are
composed of vitamins
(D) Coenzymes are the active constituents of enzymes.
02
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The amino acid Tryptophan is the precursor for the
synthesis of
(A) Melatonin and Serotonin
(B) Thyroxine and Triodothyronine
(C) Estrogen and Progesterone
(D) Cortisol and Cortisone.
03
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04
Given below is a highly simplified representation of the
human sex chromosomes from a karyotype.
The genes a and b could be of
(A) Haemophilia & red-green colour blindness
(B) Attached ear lobe and Rhesus blood group
(C) Colour blindness and body height
(D) Phenylketonuria and haemophilia.
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A sigmoid or S - curve is a characterstic of
(A) Living organism growing in a natural environment
(B) Typically all cells, tissues and organs of a plant
(C) Root elongation at a constant rate
(D) Both A and B.
05
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Enzyme catalysts differ from inorganic catalysts as
(A) Inorganic catalysts work efficiently at high
temperatures and high pressures, while enzymes get
damaged at high temperatures (above 400C)
(B) Enzyme increases the activation energy while organic
catalyst decreases
(C) Enzymes are used up in a reaction while inorganic
catalyst remain unchanged
(D) All of the above.
06
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Given below is a simplified model of
phosphorus cycling in a terrestrial
ecosystem with four blanks (a-d).
Identify the blanks
(A) a-Detritus, b-Rock minerals, c-
Producers, d-Litter fall
(B) a-Rock minerals, b-Detritus, c-
Litter fall, d-Producers
(C) a-Litter fall, b-Producers, c-
Rock minerals, d-Detritus
(D) a-Producers, b-Litter fall, c-
Rock minerals, d-Detritus.
07
Consumers
a
Soil solution
b
c
Decomposition
Uptake
Run off
Weathering
d
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Arrange the steps of catalytic cycle of an enzyme in order and
choose the right option
(i) Enzyme releases products of reaction and the enzyme is free
to bind to another substrate
(ii) Active site of enzyme is in close proximity of substrate and
breaks the chemical bonds of substrate
(iii) Binding of substrate induces enzymes to alter its shape fitting
more tightly around substrate
(iv) Substrate bind to active site of enzyme fitting into active site
(A) iii, iv, i, ii (B) iv, ii, i, iii
(C) iv, iii, ii, i (D) iii, ii, i, iv
08
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In the graphical representation of pulmonary volumes and
capacities, 'x' denotes
(A) Inspiratory reserve volume
(B) Inspiratory capacity
(C) Expiratory capacity
(D) Total lung capacity.
09
Tidal volume
Expiratoryreservevolume
Vital
capacity
‘ ’x
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Which one of the following statements is incorrect
(A) The competitive inhibitor does not affect the rate of
breakdown of the enzyme-substrate complex
(B) The presence of the competitive inhibitor decreases
the Km of the enzyme for the substrate
(C) A competitive inhibitor reacts reversibly with the
enzyme to form an enzyme-inhibitor complex
(D) In competitive inhibition, the inhibitor molecule is
not chemically changed by the enzyme.
10
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Given here is an ECG of a normal human. Which one of its
components is correctly interpreted
(A) QRS comples - one complete pulse
(B) Peak T - initiation of total cardiac contraction
(C) Peaks P and R - systole and diastole blood pressure
(D) Peak T - initiation of left atrial contraction only.
11
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Human population shows
(A) J-shaped growth curve
(B) Z-shaped growth curve
(C) S-shaped growth curve
(D) All of the above.
12
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After exponential increase, population becomes stagnant.
The growth curve is
(A) J-Shaped
(B) S-Shaped
(C) Fluctuating
(D) Circular.
13
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The following graph depicts changes in twopopulations (A and B) of herbivores in a grassyfield. A possible reason for these changes isthat(A) Population A produced more offspring
than population B(B) Population B competed more successfully
for food than population A(C) Both plant populations in this habitat
decreased(D) Population A consumed the members of
population B.
14
A
B
Num
ber
of
Org
anis
ms
Time
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One molecule of an enzyme is able to catalyse conversion of
two molecules of substrate into products in 5 minutes. Ten
molecules of enzyme and 25 molecules of substrate are mixed
in a test tube. At the end of 10 minutes the test tube will have
(A) Products and enzymes molecules
(B) Products only
(C) Products, enzyme molecules and 5 molecules of
substrate
(D) Products and 5 unreacted substrate molecules.
15
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Volume of air remaining in lungs after maximum
respiratory effort is
(A) Vital capacity
(B) Residual volume
(C) Total lung capacity
(D) Tidal volume.
16
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The following graph showing the
(A) Absorption spectrum of chlorophyll b
(B) Absorption spectrum of chlorophyll a
(C) Action spectrum of photosynthesis
(D) Both A & B.
17
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Formation of whole body from a fragment is
(A) Epigenesis
(B) Epimorphosis
(C) Morphallaxis
(D) Auxetic growth.
18
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Which of the following is/are a physical process
(A) Change in shape without breaking of bonds
(B) Change in state of matter (when ice melts into
water, or when water becomes a vapour)
(C) Hydrolysis of starch into glucose
(D) Both A and B.
19
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Recognise the figure and find out the correct matching
according to the pyramid of biomass in an aquatic
ecosystem
(A) a-11, b-4
(B) a-21, b-4
(C) a-11, b-1.5
(D) a-12, b-4.
20
PC
PP b
a
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Which statement regarding enzyme inhibition is correct
(A) Competitive inhibition occurs when the substrate and
the inhibitor compete for active site on the enzyme
(B) Competitive inhibition occurs when a substrate
competes with enzyme for binding to inhibitor protein
(C) Non – competitive inhibition of an enzyme can be
overcome by adding large amount of substrate.
(D) Non – competitive inhibitors often bind to the enzyme
irreversibly.
21
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Select the option which is not correct with respect to enzyme
action
(A) Malonate is a competitive inhibitor of succinic
dehydrogenase
(B) Substrate binds with enzyme at its active site
(C) Addition of lot of succinate does not reverse the
inhibition of succinic dehydrogenase by malonate
(D) A non - competitive inhibitor binds the enzyme at a site
distinct from that which binds the substrate
22
Recognise the figure and find out
the correct labelling
(A) a and c - arithmetic, b and d -
geometric
(B) a and c - geometric, b and d -
arithmetric
(C) a and d - geometric, b and c -
arithmetric
(D) a and d - arithmetic, b and c -
geometric.
23
Cells capable
of division
Cells that lose
capacity to divide
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Number of immigration is more than emigration and
death is lower than natality. Growth curve of population
will show
(A) Exponential phase
(B) Lag phase
(C) Declining phase
(D) Steady phase.
24
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An example of competitive inhibition of an enzyme is the
inhibition of
(A) Cytochrome oxidase by cyanide
(B) Succinic dehydrogenase by malonic acid
(C) Hexokinase by glucose 6-phosphate
(D) Carbonic anhydrase by carbon dioxide.
25
Recognise the figure and find
out the correct matching
(A) d-LH, c-FSH, b-
estrogen, a-progesteron
(B) b-LH, a-FSH, c-
estrogen, d-progesteron
(C) c-LH, d-FSH, a-
estrogen, b-progesteron
(D) a-LH, b-FSH, c-
estrogen, d-progesteron.
26b a
Developing follicle Mature follicle
Developing
corpus luteum
Regressingcorpus luteum
Ovulation
c
d
MensesO
vuri
an
even
tsU
teri
ne e
ven
ts
Days1 3 5 7 9 11 13 15 17 19 21 23 25 27 29/1
Menstruation Follicular phase(Proliferative phase)
Luteal phase(Secretory phase)
Next cyclebegins
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A population has more young individuals compared to
the older individuals. What would be the status of the
population after some years
(A) It will decline
(B) It will stabilise
(C) It will increase
(D) It will first decline and then stabilise.
27
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Normal breathing rate of a healthy human is
(A) 12-16 times/minute
(B) 15-20 times/minute
(C) 70–75 times/minute
(D) 10-12 times/minute.
28
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The figure given below is a diagrammatic
representation of response of organisms to
abiotic factors. What do (a), (b), (c)
represent respectively
(A) a-Partial regulator, b-Regulator,
c-Conformer
(B) a-Regulator, b-Conformer, c-Partial
regulator
(C) a-Regulator, b-Partial regulator,
c-Conformer
(D) a-Conformer, b-Regulator, c-Partial
regulator.
29
External level
c
a
Inte
rnal
level
b
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By using the carbonic anhydrase enzyme the reaction
(CO2 + H2O H2CO3) speeds dramatically with about
(A) 6,00,000 molecules being formed every hour
(B) 6,00,000 molecules being formed every second
(C) 36 million molecules being formed every minute
(D) Both B and C.
30
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Transition state structure of the substrate formed during
an enzymatic reaction is
(A) Transient and unstable
(B) Permanent and stable
(C) Transient but stable
(D) Permanent but unstable.
31
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Recognise the figure and find out the correct matching
a. At which point in the curve light is a limiting factor?
b. What do 'C' represent on the curve?
c. What do 'D' represent on the curve?
d. What do 'E' represent on the curve?
(A) a-A, b-factors other than light become limiting, c-light
saturation point, d-maximum rate of photosynthesis
(B) a-B, b-maximum rate of photosynthesis, c-light saturation
point, d-factors other than light become limiting
(C) a-A, b-light saturation point, c-maximum rate of
photosynthesis, d-factors other than light become limiting
(D) a-A, b-factors other than light become limiting, c-
maximum rate of photosynthesis, d-light saturation point.
32
E
A
B C
DLight intensity
Rate
of
photo
syn
thesis
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Typical growth curve in plants is
(A) Stair-steps shaped
(B) Sigmoid
(C) Parabolic
(D) Linear.
33
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Growth through increase in volume is
(A) Cartilage
(B) Striated muscle
(C) Nerve fibre
(D) Lens of eye.
34
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35
The graph below shows the changes in
two populations of herbivores in a grassy
field. A possible reason for these changes is that
(A) All of the plant populations in this habitat decreased
(B) Population A consumed the members of population B
(C) Population A produced more offspring than population B
did
(D) Population B competed more successfully for food than
population A did.
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Three of the following statements about enzymes are
correct and one is wrong. Which one is wrong
(A) Enzymes are denatured at high temperature but in
certain exceptional organisms they are effective
even at 800 -900C
(B) Most enzymes are proteins but some are lipids
(C) Enzymes require optimum pH for maximal activity
(D) Enzymes are highly specific.
36
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Maximum growth rate occurs in
(A) Stationary phase
(B) Lag phase
(C) Exponential phase
(D) Senescent phase.
37
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Recognise the figure and find out the
correct matching
(A) y-chlorophyll a, x-chlorophyll b,
z-carotenoids
(B) z-chlorophyll a, y-chlorophyll b,
x-carotenoids
(C) y-chlorophyll a, z-chlorophyll b,
x-carotenoids
(D) z-chlorophyll a, x-chlorophyll b,
y-carotenoids
38
z
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Fill in the blanks
Quantitative comparisons between the growth of the living system
can be made in two ways:
(i) Measurement and the comparison of total growth per unit
time is called the ....a.... growth rate.
(ii) The growth of the given system per unit time expressed on a
common basis, eg.; per unit initial parameter is called ....b....
growth rate.
(A) a- arithmetic, b- geometric (B) a- relative, b- absolute
(C) a- absolute, b- relative (D) a- geometric, b- arithmetic
39
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Match the columns I & II, and choose the correct combination
from the options given
Column I Column II
1. Stable
2. Expanding
a. b. c. 3. Declining
(A) a-1, b-2, c-3 (B) a-1, b-3, c-2
(C) a-2, b-3, c-1 (D) a-3, b-1, c-2.
40
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Proportion of young individuals is highest in case of
(A) Declining population
(B) Stable population
(C) Both A and B
(D) Expanding population.
41
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In absence of any enzyme this reaction is very slow, with
about
(A) 6,00,000 molecules of H2CO3 formed in one second
(B) 200 molecules of H2CO3 being formed in one second
(C) 200 molecules of H2CO3 being formed in one
minute
(D) 200 molecules of H2CO3 being formed in one hour.
42
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43
The curve given here shows enzymatic activity with relation to
three conditions (pH, temperature & substrate concentration),
What do the two axes, x and y represent
X- axis Y-axis
(A) Temperature Enzyme activity
(B) Enzymatic activity Temperature
(C) Enzyme activity pH
(D) Substrate concentration Enzyme activity
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Exponential growth is expressed as
(A) W1 = W0 ert
(B) L0= Lert
(C) Lt=L0 + rt
(D) W0 = W1 ert .
44
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Sigmoid curve is
(A) Rate of transpiration
(B) Rate of respiration
(C) Rate of photosynthesis
(D) Growth of population.
45
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46
The figure given shows the conversion of substrate into product by an
enzyme. In which one of the four options, A—D, the components of the
reaction labelled a, b, c, d are identified correctly
1. Potential energy
2. Transition state
3. Activation energy with enzyme
4. Activation energy without enzyme
(A) a-2, b-1, c-3, d-4
(B) a-2, b-1, c-4, d-3
(C) a-1, b-2, c-3, d-4
(D) a-1, b-2, c-4, d-3.
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Read the following statements and find out the incorrect
statement.
(A) Rate can also be called velocity if the direction is
specified.
(B) A general rule of thumb is that rate doubles or decreases
by half for every 100C change in either direction.
(C) Endothermic reactions are also called spontaneous
reactions while an exothermic reaction is called energy
requiring reaction.
(D) Energy difference between substrate and transition state
is called activation energy.
47
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According to induced fit theory of enzyme action
(A) Substrate induces conformational change in enzyme
(B) Substrate changes its shape after binding
(C) Conformational change takes place in substrate
(D) There is no conformational change in enzyme
48
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Recognise the figure and find out the
correct labelling
(A) a- linear curve in geometric growth,
b- sigmoid or S- curve in arithmetic
growth
(B) a- sigmoid or S- curve in arithmetic
growth, b- linear curve in geometric
growth
(C) a- sigmoid or S- curve in geometric
growth, b- linear curve in arithmetic
growth
(D) a- linear curve in arithmetic growth,
b- sigmoid or S- curve in geometric
growth
49
Time
(b)
Heig
ht
of
the p
lan
t
Time
(a)
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At asymptote stage, the population is
(A) Stabilised
(B) Increasing
(C) Decreasing
(D) Changing.
50
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Which of the following statements about enzymes is wrong
(A) Enzymes are denatured at high temperatures
(B) Enzymes are mostly proteins but some are lipids also
(C) Enzymes are highly specific.
(D) Enzymes required optimum pH and temperature for
maximum activity.
51
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Recognise the figure and find out the
correct labelling
(A) a - lag phase, b - log phase, c -
stationary phase
(B) a - log phase, b - lag phase, c -
stationary phase
(C) a - lag phase, b - exponential
phase, c - stationary phase
(D) Both A and C.
52
c
a
Time
Siz
e/w
eig
ht
of
the o
rgan
b
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Select the option which is not correct with respect to enzyme
action
(A) Malonate is a competitive inhibitor of succinic
dehydrogenase
(B) Substrate binds with enzyme at its active site
(C) Addition of lot of succinate does not reverse the
inhibition of succinic dehydrogenase by malonate
(D) A non-competitive inhibitor binds the enzyme at a site
distinct from that which binds the substrate.
53
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Recognise the figure and find out the
correct matching
(A) c-tropical forest, f-arctic and alpine
tundra, a-desert, d-temperate forest,
b-grassland, e-coniferous forest
(B) d-tropical forest, e-arctic and alpine
tundra, f-desert, e-temperate forest,
b-grassland, c-coniferous forest
(C) b-tropical forest, f-arctic and alpine
tundra, a-desert, c-temperate forest,
e-grassland, d-coniferous forest
(D) c-tropical forest, a-arctic and alpine
tundra, b-desert, d-temperate forest,
f-grassland, e-coniferous forest.
54
30
25
20
15
10
5
–5
–10
–15
0
a b
c
d
e
f
50 100 150 200 300 400250 350 450
Mean annual precipitation (cm)
Dr. Hariom GangwarMBBS (KGMU)
8+ yrs Teaching Experience
12:00
PM
05:00
PM
Live Class
Crash Course
J