To facilitate absorption of end products of fat digestion, bile salts combine with fatty acids to form complexes called:
1. chylomicrons
2. micelles
3. globules
4. lipoproteins
With respect to the human skeleton, the largest ‘foramen’ will be the:
1. foramen magnum
2. optic foramen
3. obturator foramen
4. mandibular foramen
Most renal calculi are:
1. | oxalates | 2. | citrates |
3. | urates | 4. | carbonates |
The respiratory diffusion membrane is made of all the following layers except:
1. Alveolar epithelium | 2. Basement layer |
3. Vascular endothelium | 4. Surfactant |
The second most common formed elements in the human blood are:
1. Proteins | 2. Water |
3. RBC | 4. Thrombocytes |
Identify the correct statement regarding the sections of the spinal cord shown in the given diagram:
I. A and D are part of the grey mater
II. B is motor and C is sensory
1. Only I | 2. Only II |
3. Both I and II | 4. Neither I nor II |
The cranial meninge that is in contact with the brain tissue is the:
1. Dura mater | 2. Arachanoid mater |
3. Pia mater | 4. Grey matter |
What part of the early embryo differentiates into the three germ layers?
1. | The trophoblast cells | 2. | Inner cell mass |
3. | Both | 4. | None |
“Saheli” is a:
1. | NGO working for female child rights |
2. | Mid-wife working in villages to help with child immunization |
3. | A national helpline number for the prevention of crimes against wome |
4. | New oral contraceptive for females |
The ovaries are located:
1. | In a sac outside the body | 2. | In the lower abdomen |
3. | In the upper abdomen | 4. | In the thorax |
Hormones which interact with intracellular receptors:
1. generate second messengers
2. depolarize the membrane of the target cells
3. stop the enzymatic actions of membrane proteins
4. regulate gene expression
The main difference between active transport and facilitated diffusion is:
1. In active transport the molecules move from areas of high to areas of low concentration
2. In active transport, you need carrier proteins
3. In active transport, you need ATP to move molecules against a concentration gradient
4. In active transport, only water molecules move
Cells at the end of prophase of mitosis, when viewed under the microscope, do not show:
I. Golgi complexes
II. Endoplasmic reticulum
III. Nucleolus
IV. Nuclear envelope
1. Only I and II are correct
2. Only III and IV are correct
3. Only II, III and IV are correct
4. I, II, III and IV are correct
The property of the water molecule that is most important for the maintenance of homeostasis in living organisms is:
1. High latent heat of vaporization
2. High latent heat of fusion
3. High specific heat
4. Liquid form more dense than solid form
Match each item in Column I [Diazotroph] with the feature in Column II and select the correct answer from the codes given below:
|
COLUMN I |
|
COLUMN II |
A. |
Cyanobacteria |
a. |
Actinorhizal symbiont |
B. |
Frankia |
b. |
Do not form nodules |
C. |
Rhizobium |
c. |
Free-living nitrogen fixer |
D. |
Azotobacter |
d. |
Legume symbiont |
Codes
A | B | C | D | |
1. | a | b | c | d |
2. | b | a | c | d |
3. | a | b | d | c |
4. | b | a | d | c |
In the given diagram of pBR322, the location of the recognition sequences of BamH I and Sal I are represented by the numbers:
|
A thorn of Bougainvillea and a tendril of Cucurbita are an example of :
1. | analogous organs | 2. | vestigial organs |
3. | homologous organs | 4. | defense organs |
Adenine was synthesized by Orgel, using the Miller apparatus, when he used the gas :
1. carbon dioxide
2. hydrogen cyanide
3. hydrogen sulfide
4. nitrogen
If the base sequence of a codon in mRNA is 5'-AUG-3', the sequence of tRNA pairing with it must be:
1. 5'-UAC-3'
2. 5'-CAU-3'
3. 5'-AUG-3'
4. 5'-GUA-3'
Which of the following is a recombinant protein?
1. | Beta Galactosidase in E.coli | 2. | Insulin in humans |
3. | Somatotropin in humans | 4. | Interferon in E. coli |
The last of 24 human chromosomes to be sequenced was:
1. Chromosome 1 and completed in 2003
2. Chromosome 1 and completed in 2006
3. Chromosome X and completed in 2003
4. Chromosome X and completed in 2006
How many unique gametes could be produced through independent assortment by an individual with the genotype AaBbCCDdEE?
1. | 4 | 2. | 8 |
3. | 16 | 4. | 32 |
The algae Spirulina, Chlorella and the microbe Methylophilus methylotrophus can be used as a source of:
1. | Vitamin A and C | 2. | Minerals like calcium |
3. | Single Cell Protein | 4. | Omega 3 fatty acids |
Majority of plants:
1. | Use abiotic agents for pollination |
2. | Use biotic agents for pollination |
3. | Do not use any agent for pollination |
4. | Use both abiotic and biotic agents for pollination. |
A typical angiosperm embryosac, at maturity, is:
1. | 8 celled and 8 nucleate | 2. | 8 celled and 7 nucleate |
3. | 7 celled and 8 nucleate | 4. | 7 celled and 7 nucleate |
The most common opportunistic infection associated with AIDS is :
1. Tuberculosis
2. Pneumocystis carinii pneumonia
3. Cryptococcal meningitis
4. Toxoplasma encephalitis
Mutations that arise due to changes in a single base pair of DNA are called as:
1. | Chromosomal aberrations | 2. | Point mutations |
3. | Nonsense mutations | 4. | Frameshift mutations |
A store house of collected plant specimens that are dried, pressed and preserved on sheets is called as:
1. Herbarium
2. Monograph
3. Flora
4. Manual
All the following regarding Pinus are correct except:
1. Obligate association with mycorrhiza
2. Unbranched stems
3. Male and female strobili on the same plant
4. Leaves in fascicles
The terms ‘bracket fungi’ or ‘pufballs’ is used for some of the members of the class:
1. | Phycomycetes | 2. | Ascomycetes |
3. | Basidiomycetes | 4. | Deuteromycetes |
The respiratory system of cockroach consists of a network of tracheae that open through how many spiracles present on the lateral side of the body?
1. 5
2. 5 pairs
3. 20
4. 20 pairs
All the following would be characteristics of a general reptile except:
1. Dermal scales or scutes
2. Poikilothermy
3. Direct development
4. Heart is usually three chambered
A plant tissue, when stained, showed the presence of hemicellulose and pectin in cell wall of its cells. The tissue represents
1. Collenchyma
2. Sclerenchyma
3. Xylem
4. Meristem
Many pulses of daily use belong to one of the families below (tick the correct answer)
1. Solanaceae
2. Fabaceae
3. Liliaceae
4. Poceae
Which of the following is an endospermic seed?
1. | Bean | 2. | Gram |
3. | Pea | 4. | Castor |
Which of the following is not a feature of Cnidaria?
1. Radially symmetrical animals
2. Gastro-vascular cavity with a single opening
3. Presence of cells that contain stinging capsules
4. Some have asexually reproducing medusa
Amensalism is an association between two species where:
1. One species is harmed and the other is benefitted
2. One species is harmed and the other is unaffected
3. One species is benefitted and the other is unaffected
4. Both species are harmed
Nuisance growth of aquatic plants and bloom-forming algae in natural waters is generally due to high concentrations of:
1. | Carbon | 2. | Sulphur |
3. | Calcium | 4. | Phosphorus |
The most effective device to remove particulate matter from polluted air is:
1. electrostatic precipitator
2. cyclonic separator
3. trajectory separator
4. scrubber
Which of the following group exhibit more species diversity?
1. | Gymnosperms | 2. | Algae |
3. | Bryophytes | 4. | Fungi |
Which of the following type of ecosystem is expected in an area where evaporation exceeds precipitation, and mean annual rainfall is below 100 mm?
1. Grassland
2. Shrubby forest
3. Desert
4. Mangrove
The pyramid of biomass in the sea is generally inverted because:
1. | the biomass of fish far exceeds that of phytoplankton at any given time |
2. | the major primary production to the sea is actually contributed by the terrestrial ecosystems |
3. | the flow of energy level does not follow the laws of thermodynamics in the sea |
4. | It is not true. The pyramid of biomass can never be inverted in any ecosystem |
All the following are correct about the exponential growth of population except:
1. | It is represented by the equation dt/dN = rN |
2. | Resources in the habitat are unlimited |
3. | The rate of natural increase is represented by “r” |
4. | In 1981, the ‘r’ value for human population in India was 0.0205 |
Phosphorylation of glucose during glycolysis is catalysed by
1. Phosphoglucomutase | 2. Phosphoglucoisomerase |
3. Hexokinase | 4. Phosphorylase |
Which pigment acts directly to convert light energy to chemical energy ?
1. | Chlorophyll a | 2. | Chlorophyll b |
3. | Xanthophylls | 4. | Carotenoid |
Mycorrhiza is a symbiotic association of fungus with root system which helps in:
A. Absorption of water | B. Mineral nutrition |
C. Translocation | D. Gaseous exchange |
1. Only A | 2. Only B |
3. Both A and B | 4. Both B and C |
The amnion of mammalian embryo is derived from
1. Mesoderm and trophoblast
2. Endoderm and mesoderm
3. Ectoderm and mesoderm
4. Ectoderm and endoderm
What is common to whale, seal and shark?
1. Homoiothermy
2. Seasonal migration
3. Thick subcutaneous fat
4. Convergent evolution
PCR and Restriction Fragment Length Polymorphism are the methods for:
1. Study of enzymes
2. Genetic transformation
3. DNA sequencing
4. Genetic Fingerprinting
The one aspect which is not a salient feature of genetic code, is its being
1. Ambiguous
2. Universal
3. Specific
4. Degenerate
The ovule of an angiosperm is technically equivalent to
1. megaspore
2. megasporangium
3. megasporophyll
4. megaspore mother cell
Megasporangium is equivalent to :
1. Fruit
2. Nucellus
3. Ovule
4. Embryo sac
Which one of the following is commonly used in transfer of foreign DNA into crop plants?
1. Penicillium expansum
2. Trichoderma polysporum
3. Meloidogyne incognita
4. Agrobacterium tumefaciens
Consider the following four statements (a-d) regarding kidney transplants and select the two correct ones out of these.
(a) Even if a kidney transplant is proper the recipient may need to take immuno-suppressants for a long time
(b) The cell-mediated immune response is responsible for the graft rejection
(c) The B- lymphocytes are responsible for rejection of the graft
(d) The acceptance or rejection of a kidney transplant depends on specific interferons
The two correct statements are
1. (c) and (d)
2. (a) and (c)
3. (a) and (b)
4. (b) and (c)
Among the following characters, which one was not considered by Mendel in his experiments on pea?
1. Stem - Tall or Dwarf
2. Trichomes - Glandular or non-glandular
3. Seed - Green or Yellow
4. Pod - Inflated or Constricted
In order to obtain virus-free plants through tissue culture the best method is
1. protoplast culture
2. embryo rescue
3. anther culture
4. meristem culture
Which of the following is not used as a biopesticide?
1. Xanthomonas campestris
2. Bacillus thuringiensis
3. Trichoderma harzianum
4. Nucleopolyhedrovirus
In which set of organisms does external fertilization occur
1. Echinodermata and mosses
2. Hemichordata and ferns
3. Amphibians and algae
4. Reptiles and gymnosperms
Functional megaspore in an angiosperm develops into:
1. | Ovule | 2. | Endosperm |
3. | Embryo sac | 4. | Embryo |
Which of the following components provides sticky character to the bacterial cell?
1. Cell wall
2. Nuclear membrane
3. plasma membrane
4. Glycocalyx
Viroids differ from viruses in having
1. DNA molecules with protein coat
2. DNA molecules without protein coat
3. RNA molecules with protein coat
4. RNA molecules without protein coat
Keel is the characteristic feature of flower of:
1. Indigofera
2. Aloe
3. Tomato
4. Tulip
Which one of the following organisms is scientifically correctly named, correctly printed according to the International Rules of Nomenclature and is correctly described?
1. Musca domestica - The common house lizard, a reptile
2. Plasmodium falciparum - A protozoan pathogen causing the most serious type of malaria
3. Felis tigris - The Indian tiger, well protected in Gir forests.
4. E.coli - Full name Escherichia coli, a commonly occurring bacterium in human intestine
A lake with an inflow of domestic sewage rich in organic waste may result in:
1. | An increased production of fishes due to a lot of nutrients |
2. | Death of fishes due to lack of oxygen |
3. | Drying of the lake very soon due to algal bloom |
4. | Increased population of aquatic food web organisms |
Blue-baby syndrome results from
1. Excess of ODS
2. Excess of chlorides
3. Excess of dissolved oxygen
4. Methaemoglobin
A renewable exhaustible natural resource is
1. Petroleum
2. Minerals
3. Forest
4. Coal
Which one of the following statements is correct for secondary succession?
1. It begins on a bare rock
2. It occurs on a deforested site
3. It follows the primary succession
4. It is similar to primary succession except that it has a relatively fast pace
Gause’s principle of competitive exclusion states that:
1. | more abundant species will exclude the less abundant species through competition. |
2. | competition for the same resources excludes species having different food preferences. |
3. | no two species can occupy the same niche indefinitely for the same limiting resources. |
4. | larger organisms exclude smaller ones through competition. |
The main function of mammalian corpus luteum is to produce
1. estrogen only
2. progesterone
3. human chorionic gonadotropin
4. relaxin only
A health disorder that results from the deficiency of thyroxine in adults and characterized by
(i) a low metabolic rate
(ii) increase in body weight
(iii) tendency to retain water in tissues is
1. hypothyroidism | 2. simple goitre |
3. myxoedema | 4. cretinism |
The production of gametes by the parents the formation of zygotes, the F1 and F2 plants can be understood using
1. Pie diagram
2. A pyramid diagram
3. Punnet square
4. Wenn diagram
Match the column I with column II.
Column I | Column II | ||
(a) | Golgi apparatus | (i) | Synthesis of protein |
(b) | Lysosomes | (ii) | Trap waste and excretory products |
(c) | Vacuoles | (iii) | Formation of glycoproteins and glycolipids |
(d) | Ribosomes | (iv) | Digesting biomolecules |
Choose the right match from options given below:
(a) | (b) | (c) | (d) | |
1. | (iii) | (iv) | (ii) | (i) |
2. | (iv) | (iii) | (i) | (ii) |
3. | (iii) | (ii) | (iv) | (i) |
4. | (i) | (ii) | (iv) | (iii) |
The ciliated epithelial cells are required to move particles or mucus in a specific direction. In humans, these cells are mainly present in:
1. Bronchioles and fallopian tubes
2. Bile duct and bronchioles
3. Fallopian tubes and pancreatic duct
4. Eustachian tube and salivary duct
Which of the following contraceptive methods do involve a role of hormone?
1. Pills, Emergency contraceptives, barrier methods
2. Lactational amenorrhea, Pills, Emergency contraceptives
3. Barrier method, Lactational amenorrhea, pills
4. CuT, Pills, Emergency contraceptives
Tidal Volume and Expiratory Reserve Volume of an athlete are 500 mL and 1000 mL respectively. What will be his Expiratory Capacity if the Residual Volume is 1200 mL?
1. | 2700 mL | 2. | 1500 mL |
3. | 1700 mL | 4. | 2200 mL |
Which of the following glucose transporters is insulin-dependent?
1. GLUT IV
2. GLUT I
3. GLUT II
4. GLUT III
Use of an artificial kidney during hemodialysis may result in:
(a) Nitrogenous waste build-up in the body
(b) Non-elimination of excess potassium ions
(c) Reduced absorption of calcium ions from gastro-intestinal tract
(d) Reduced RBC production
Which of the following options is the most appropriate ?
1. (a) and (d) are correct
2. (a) and (b) are correct
3. (b) and (c) are correct
4. (c) and (d) are correct
Xylem translocates:
1. Water, mineral salts, some organic nitrogen and hormones
2. Water only
3. Water and mineral salts only
4. Water, minerals and some organic nitrogen only
Consider the following statements:
(A) Coenzyme or metal ion that is tightly bound to enzyme protein is called prosthetic group
(B) A complete catalytic enzyme with its bound prosthetic group is called apoenzyme
Select the correct option
1. (A) is false but (B) is true
2. Both (A) and (B) are true
3. (A) is true but (B) is false
4. Both (A) and (B) are false
Which of the statements given below is not true about the formation of annual rings in trees?
1. Annual rings are not prominent in the trees of temperate regions.
2. Annual rings are a combination of spring wood and autumn wood produced in a year.
3. Differential activity of cambium causes light and dark bands of tissue - early and late wood respectively.
4. Activity of cambium depends upon the variation in climate.
Which of the following statements is correct?
1. Cornea consists of dense matrix of collagen and is the most sensitive portion of the eye
2. Cornea is an external, transparent and protective proteinacious covering of the eye-ball
3. Cornea consists of dense connective tissue of elastin and can repair itself
4. Cornea is convex, transparent layer which is highly vascularised
It takes very long time for pineapple plants to produce flowers. Which combination of hormones can be applied to artificially induce flowering in pineapple plants throughout the year to increase yield?
1. Cytokinin and Abscisic acid
2. Auxin and Ethylene
3. Gibberellin and Cytokinin
4. Gibberellin and Abscisic acid
Identify the cells whose secretion protects the lining of gastro-intestinal tract from various enzymes.
1. Duodenal cells
2. Chief cells
3. Goblet cells
4. Oxyntic cells
Select the correct option.
1. There are seven pairs of vertebrosternal, three pairs of vertebrochondral and two pairs of vertebral ribs.
2. 8th, 9th and 10th pairs of ribs articulate directly with the sternum.
3. 11th and 12th pairs of ribs are connected to the sternum with the help of hyaline cartilage.
4. Each rid is a flat thin bone and all the ribs are connected dorsally to the thoracic vertebrae and ventrally to the sternum.
Cells in phase:
1. terminate the cell cycle
2. exit the cell cycle
3. enter the cell cycle
4. suspend the cell cycle
What would be the heart rate of a person if the cardiac output is 5L, blood volume in the ventricles at the end of diastole is 100 mL and at the end of ventricular systole is 50 mL?
1. 125 beats per minute | 2. 50 beats per minute |
3. 75 beats per minute | 4. 100 beats per minute |
If the distance between two consecutive base pairs is 0.34 nm and the total number of base pairs of a DNA double helix in a typical mammalian cell is bp, then the length of the DNA is approximate:
1. | 2.5 meters | 2. | 2.2 meters |
3. | 2.7 meters | 4. | 2.0 meters |
The number of substrate-level phosphorylations in one turn of a citric acid cycle is
1. | One | 2. | Two |
3. | Three | 4. | Four |
The product(s) of the reaction catalyzed by nitrogenase in root nodules of leguminous plants is/are.
1. Nitrate alone
2. Ammonia and oxygen
3. Ammonia and hydrogen
4. Ammonia alone
The oxygenation activity of RuBisCO enzyme in photorespiration leads to the formation of:
1. 1 molecule of the 3-C compound
2. 1 molecule of the 6-C compound
3. 1 molecule of a 4-C compound and 1 molecule of the 2-C compound
4. 2 molecules of the 3-C compound