1. A physiological disorder X always leads to the disorder Y. However, disorder Y may occur by itself. A population shows 4% incidence of disorder Y. Which of the following inferences is valid?
A. 4% of the population suffers from both X&Y
B.Less than 4% of the population suffers fromX
C.At least 4% of the population suffers f fromX
D.There is no incidence of X in the given population
2. Exposing an organism to a certain chemical can change nucleotide bases in a gene, causing mutation. In one such mutated organism if a protein had only 70% of the primary amino acid sequence, which of the following is likely?
A.Mutation broke the protein
B.The organism could not make amino
C.Mutation created a terminator codon
D.The gene was not transcribed
3. A reference material is required to be prepared with 4 ppm calcium. The amount of CaC03 (molecular weight = 100) required to prepare 1000 g of such a reference material is
A. 10 micro grams
B. 4 micrograms
C. 4 mg
D. 10 mg
4.Standing on a polished stone floor one feels colder than on a rough floor of the same stone. This is
A.Thermal conductivity of the stone depends on the surface smoothness
B.Specific heat of the stone changes by polishing it
C.The temperature of the polished floor is lower than that of the rough floor
D.There is greater heat loss from the soles of the feet when in contact with the polished floor than with the rough floor
5.Popular use of which of the following fertilizers increases the acidity of soil?
A.Potassium Nitrate
B.Urea
C.Ammonium sulphate
D.Superphosphate of lime
6. If the atmospheric concentration of carbon dioxide is doubled and there are favourable conditions of water, nutrients, light and temperature, what would happen to water requirement of plants?
A.It decreases initially for a short time and then returns to the original value
B.It increases
C.It decreases
D.It increases initially for a short time and then returns to the original value
7.The graph represents the depth profile of temperature in the open ocean; in which region this is likely to be prevalent?
A.tropical region
B.Equatorial region
C.Polar Region
D. Sub tropic region
8.Glucose molecules diffuse across a cell of diameter d in time t. If the cell diameter is tripled, the diffusion time
A.increase to 9t
B.decrease to t/3
C.increase to 3r
D.decrease to t/9
9.Identify the figure which depicts a first order reaction.
A. 1
B. 2
C. 3
D. 4
10.which of the following particles has the largest range in a given medium if their initial energies are the
A. alpha
B. electron
C. positron
D. gamma
11.The free engery Delta G of a dissolved solute
A Increase with solute concentration
B Decrease with solute concentration
C Is Independent of solute concentration
D Depends only on solute
12. The area of allowed regions in the Ramachandran map will be least for
A. Gly
B. L- Ala
C. L-Prol
D. Alpha Methyl L Valine
13. Small RNA with internally complementary sequences that form hairpin like structure synthesized as Precursor RNAs and cleaved by endonucleases to form short duplexes are called
A. snRNA
B. mRNA
C. tRNA
D. miRNA
14. Polar bears maintain their body temperature because they have more of
A.Transducin protein
B.Uncoupling protein
C.Myoglobin protein
D.FoFi ATPase
15.During generation of an action potential depolarization is due to
A. K+ Efflux
B.Na+ Efflux
C.Na+ influx
D.K+ influx
16. Transport of water across aquaporins is regulated by the presence of which of the following sequence of three highly conserved amino acids?
A. Ala – Asn -Pro
B. Pro – Asn -Ala
C. Asn – Pro – Ala
D. Pro – Ala – Asn
17. Which of the cyclin have/ has essential function in S phase of cell
A. A- Type
B. B- Type
C. D- Type
D. Both B and D – Type
18.A mother of blood group O has a group O child. The father could be of blood type
A. A or B or O
B. O Only
C. A or B
D. AB only
19. The transition to flowering in plant requires
A. Growth of plants under long day conditions
B. Growth of plants under short day conditions
C. Reprogramming of the shoot apical meristem
D. Synthesis of the flowering hormone florigen
20. Water is dripping out of tiny hole at the bottom of three flasks whose base diameter is the same
and are initially filled the same height as shown
Which is the correct comparison of the rate of fall of the column of water in the three flasks?
A. A Fastest, B Slowest
B. B Fastest, A Slowest
C. B Fastest, C Slowest
D. C Fastest, B Slowest