MAHA SET 2015 Question Paper 2 Life Sciences

Test Booklet No.
F
LIFE SCIENCE
Signature and Name of Invigilator Seat No.
1. (Signature) ......................................... (In figures as in Admit Card)
(Name) ................................................ Seat No. ..............................................................
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(Name) ................................................ OMR Sheet No.
AUG - 34215 (To be filled by the Candidate)
Time Allowed : 1¼ Hours] [Maximum Marks : 100
Number of Pages in this Booklet : 16 Number of Questions in this Booklet : 50
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1. Write your Seat No. and OMR Sheet No. in the space provided 1.
on the top of this page.
2. This paper consists of 50 objective type questions. Each question
will carry two marks. All questions of Paper-II will be compulsory, 2.
covering entire syllabus (including all electives, without options).
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Example : where (C) is the correct response.

A B D
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Life Science
Paper II
Time Allowed : 75 Minutes] [Maximum Marks : 100
Note : This paper contains 50 multiple choice questions, each carrying
Two (2) marks. Attempt All questions.

1. Dosage compensation in mammals 2. Which one of the following is an

example of heterogametic females ?
is :

(A) Drosophila
(A) Heterochromatinisation of one
(B) Moths
X-chromosome in females
(C) Human
(B) Hyperactivation of single
(D) 7 O’clock plant
X-chromosome in males
3. Star shaped basic cell morphology

(C) Hyperactivation of Y-chromosome
have been observed in :

in males
(A) Protozoa

(D) Equalisation of transcription (B) Yeast

from both X and Y-chromosome (C) Eubacteria

in males (D) Algae

3 [P.T.O.

4. Which of the following is not an iso- 6. Metastasis of cancer cells during

typic determinant ? malignant growth of tumors depends

(A) Ig G1 on which of the following enzymes ?

(B) Ig G2 (A) Trypsin

(C) Ig G2m (B) Chymotrypsin

(D) Ig G3 (C) Lipase

5. Transport of molecules through a (D) Matrix metalloprotease

cell membrane down a concentration 7. Which one of the following proteins

gradient mediated by a membrane is MAP Kinase Kinase Kinase

transport protein is called as : (MAP KKK) ?

(A) Symporter (A) c-RAS

(B) Antiporter (B) GAP

(C) Uniporter (C) SoS

(D) Transporter (D) C-Raf

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8. Which of the following is not a 10. Which of the following high energy

compound releases maximum
component of membrane
amount of energy on hydrolysis ?
phospholipid, lecithin ?
(A) ATP

(A) Glycerol (B) 1, 3 bis-phosphoglycerate

(B) Choline (C) Creatine phosphate

(D) Phosphoenol pyruvate
(C) Sphingosine
11. During translation, formyl-
(D) Fatty acid
methionine and methionine, as an

initiator amino acid, is distinguished
9. Which shuttle is operated to get 32
from any internal methionine by :
ATP molecule after complete
(A) initiation codon versus internal
oxidation of glucose ?
codon

(A) Glycerol-3-phosphate (B) initiation factor versus

elongation factor
(B) Malate-aspartate
(C) small subunit of ribosome versus
(C) Pyruvate-malate
large subunit of ribosome

(D) Citrate-pyruvate (D) ATP versus GTP

5 [P.T.O.

12. Silk fibroin displays ...................... 14. In a highly acidic solution

structure. (pH = 1.3) the amino acid glycine

exists in :
(A) -helix
+
(A) N H — CH2 — COO–
3
(B) loop
+
(B) N H — CH2 — COOH
3
(C) parallel -sheet

(C) NH2 — CH2 — COOH
(D) antiparallel -sheet
(D) NH2 — CH2 — COO–
13. What is the role of peptidoglycan ?
15. Among the following which is the

(A) extracellular adhesive
protein carrier molecule linking

(B) gives rigidity and strength to PS-II and PS-I in photosynthesis ?

exoskeletons
(A) Plastocyanin

(C) gives rigidity and strength to (B) Ferredoxin

cell envelope
(C) Pheophytin

(D) energy storage (D) Plastoquinone

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16. Which of the following has greater 19. Which of the following statements
affinity for haemoglobin ?
is incorrect for normal cells ?

(A) Carbon monoxide
(A) Intracellular potential of only
(B) Carbon dioxide
the neurones is negative in
(C) Oxygen
comparison with the
(D) Nitrogen
extracellular potential

17. A precursor is converted by
(B) Extracellular potential is always
ultraviolet radiation into a molecule.
positive compared to the
The molecule is likely to be :
intracellular potential of all
(A) Vitamin C
cells
(B) Vitamin K
(C) Intracellular compartment
(C) Vitamin A
contains more of potassium
(D) Vitamin D
ions than the extracellular
18. The deglutition centre is located in
compartment
the :

(A) Lumbar spinal cord (D) Extracellular compartment

(B) Cerebral cortex contains more of sodium ions

(C) Medulla oblongata than the intracellular

compartment
(D) Lateral hypothalamus

7 [P.T.O.

20. The oxygen atoms in the water 22. The functional allele of a gene that

molecules formed in glucose
predominates in the population of an
oxidation according to the equation :
organism is called .......................
C6H12O6 + 6O2 — 6CO2 + 6H2O

come : allele.

(A) entirely from glucose
(A) Wild-type
(B) entirely from respiratory oxygen
(B) Recessive
(C) equally from respiratory
oxygen and glucose
(C) Multiple
(D) from glucose and respiratory
oxygen in 1 : 3 ratio (D) Epistatic

21. The control of cell elongation in the
23. Which of the following DNA
Arabidopsis hypocotyl by light and
gibberellic acid represents an sequences is present in telomeres of

example of :
human chromosomes ?
(A) secondary cross-regulation
(A) 5' TTA GGG 3'
(B) positive primary cross-
regulation
(B) 5' GGG TTA 3'
(C) negative primary cross-
regulation (C) 5' CCA GGG 3'

(D) Tertiary cross-regulation (D) 5' CCC AAT 3'

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26. Xeroderma pigmentosum can be
24. RNA polymerase I is located
repaired by :
in .................... .
(A) Mismatch repair

(A) Nucleus
(B) Nucleotide excision repair

(B) Nucleolus (C) Base excision repair

(D) Direct repair
(C) Matrix
27. In somatic cell hybrid generation
(D) mtDNA involving use of human and chinese

hamster ovary cells :
25. Map distance between genes in a
(A) Human chromosomes get
genetic map is determined by :
eliminated

(A) Gene gap (B) Human chromosomes get

rearranged
(B) Rate of recombination between
(C) Chromosomes of chinese
genes
hamster ovary cells get

(C) Percent of independent eliminated

(D) Chromosomes of chinese
assortment
hamster ovary cells undergo
(D) Linkage relationship translocations

9 [P.T.O.

28. Patau syndrome is due to : 31. Formation of new species through

(A) Trisomy of chromosome 13 geographic isolation and prevention

(B) Trisomy of chromosome 18 of gene flow is known as ...................

(C) Trisomy of chromosome 21 speciation.

(D) Robertsonian translocation (A) Sympatric

29. Constitutive heterochromatin is (B) Allelopatric
mostly :
(C) Allopatric
(A) Repetitive DNA
(D) Isopatric
(B) Devoid of repetitive sequence
32. How is extinction depicted in a
(C) Varies in different cell types
cladistic phylogenetic tree
(D) Express differently at different
diagram ?
developmental stages
(A) A branch splits
30. The centre of origin of groundnut

is : (B) A branch ends

(A) North-East Asia (C) A brach shifts along the

(B) South-East Asia X-axis

(C) South America (D) A branch shifts along the

(D) Brazil Y-axis

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33. Which of the following exhibits the 34. Miller and Urey performed an

experiment to prove origin of life.
most fit individual in an
They took gases NH3 and H2 along
evolutionary sense ?
with .................... .

(A) A tiger who is successful at
(A) N2 and H2O

capturing prey but has no
(B) H2O and CH4

cubs
(C) CO2 and N2

(B) A tiger who has ten cubs, (D) CH4 and N2

eight of which live to 35. In a population, balancing selection

adulthood is accomplished through successful

reproduction of :
(C) A tiger who overcomes a
(A) homozygous recessive
disease and lives to have three
individuals
cubs
(B) homozygous dominant

(D) A tiger who shows parental individuals

care for his cubs but only two (C) heterozygous individuals

live to adulthood (D) hemizygous individuals

11 [P.T.O.

36. In a large randomly mating 38. Deforestation generally causes a

population only four percent of the decrease in :

individuals shows a recessive trait.
(A) Rainfall
What will be the frequency of
(B) Drought
carriers in the following

generation ? (C) Soil erosion

(A) 8% (D) Global warming

(B) 64% 39. Which of the following will ensure

(C) 16% diversity of wild flora ?

(D) 32% (A) Monoculture of forest plant

37. Eutrophication causes a reduction of species

...................... in the water body. (B) Polyculture of native plant

(A) Carbon dioxide species

(B) Oxygen (C) Introduction of new plant

(C) Nitrogen species

(D) Sulphur dioxide (D) Transplantation of trees

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41. Kelameru Bird Sanctuary is well
40. The purpose of Rio Declaration on
known :

Environment and Development is to (A) For pelicans and other marine

birds
promote :
(B) As a transit area for migratory

ducks
(A) Wildlife protection around the
(C) For presence of a large number

world of peafowls

(D) As a breeding ground for
(B) Optimal utilization of
marine turtles

resources 42. Peroxylacetyl Nitrate (PAN) is a

product of :

(C) Sustainable development (A) Acid rain

(B) Chlorofluorocarbon + sulphur
around the world
dioxide

(D) Propagation of evergreen (C) Depletion of oxygen

(D) Synergistic effect of
forests in the tropics
photochemical smog

13 [P.T.O.

43. The source of turmeric is :
45. Which of the following genes are

(A) Crocus sativus Linn. used in molecular systematics ?

(A) Nuclear ribosomal genes
(B) Curcuma longa Linn.

(B) House-keeping genes

(C) Cuminum cyminum Linn.
(C) Telomere genes

(D) Curculigo orchioides Gaertn. (D) Structural genes

46. If a structure in an organism
44. Which of the following has highest
evolves in different lineages, so that

percentage of endangered plant
it is possessed by several species

although it was not found in their
species ?

most recent common ancestors then

(A) Conifers
it exhibits :

(B) Cycads (A) Analogy

(B) Homology
(C) Cacti
(C) Epistemology

(D) Ferns
(D) Homoplasy

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47. Which of the following exhibits 49. DNA fingerprinting uses variation

maximum diversity of animals and in :

plants ? (A) Satellite DNA

(A) Coral reefs (B) Retrotransposons

(B) Mangroves (C) SNPs

(C) Tropical rain forest (D) Intron length

(D) Tundra 50. The most important cause of

48. Which of the following is not decrease in biodiversity on our

included under in-situ planet is :

conservation ? (A) Habitat destruction

(A) Tiger reserves (B) Habitat pollution

(B) National parks (C) Introduction of exotic species

(C) Botanical gardens (D) Over-exploitation of renewable

(D) Sanctuaries resources

15 [P.T.O.

ROUGH WORK

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