Question paper- IIT-JAM 2008

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IIT-JAM questions paper 2006

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IIT Question Paper - Biotechnology 2005

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Sample Questions - PART 13

Q) Capping occurs when

1. The trascription is complete
2. The trascritption changes from initiation to elongation phase
3. The elongation phase is complete
4. When RNA is in cytoplasm
5. None of the above

Q) The component that act as a DNA mimic in prokaryotic RNA polymerase is

1. Beta component
2. Alpha component
3. Sigma 3.2
4. Sigma 1.1
5. None of the above

Q) Which of the following is not a DNA intercalating agent

1. Ethidium Bromide
2. oxoG
3. Proflavin
4. Acridines
5. Exo 8,9 epoxide of aflatoxin B1

Q) Huntington's disease is a type of
1. Trinucleotide repeat disorder
2. Autosomal recessive disorder
3. Non-Autosomal recessive disorder
4. Non-Autosomal dominant disorder
5. Cardiac disorder

Q) The eukaryotic DNA polymerase respondible for replicating the ribosomal DNA is
1. Pol alpha
2. Pol beta
3. Pol epsilon
4. Pol gamma
5. Pol Delta

Q) The amino acids that are rarely found in alpha helix are
1. Proline and methionine
2. Proline and valine
3. Proline and serine
4. Proline and histidine
5. Alanine and proline

Q) SOS response in prokaryotes repair the DNA damage using
1, Base excision repair
2. Non homologous end joining
3. Mismatch repair
4. Trasletion DNA synthesis
5. Doublestrand break repair

Q) End problem is not seen in
1. Leading strand
2. Lagging strand
3. Linear DNA
4. Circular DNA

Q) Topoisomerases help in
1. Decatenation and catenation
2. Base excision repair
3. Reduce negative supercoiling
4. Recombinational repair
5. Non-homologous end joining

Q) The defect is on a gene that codes DNA helicase causes
1. Werner syndrome
2. Bloom's syndrome
3. Ataxia telangiectasia
4. Hay-Wells syndrome
5. Fibromyalgia

Sample Questions - PART 12

Q) Which of the following statement(s) is/are true

1. There is no movement of water across isoosmotic solutions

2. Stenohalines includes only osmoconformers

3. Euryhalines can tolerate large osmotic changes in the environment

4. Water moves from a hyperosmotic solution to hypoosmotic solution

5. Both 3 and 4


Q) The only statement true among the following is

1. Fresh water fishes include only osmoregulators

2. Marine water fishes have a problem of gaining large quantities of water

3. Marine water fishes are hypertonic to seawater

4. Fresh water fishes are hypotonic to their surrounding water

5. None of the above


Q) The human urine is

1. Hypoosmotic compared to interstitial fluids

2. Hyperosmotic compared to interstitial fluids

3. Isoosmootic compared to interstitial fluids

4. Made hypoosmotic in cortical nephrons

5. Made hyperosmotic in cortical nephrons


Q) The decending limb loop of Henle

1. Has many aquaporins

2. Is permeable to salts

3. Is impermeable to water

4. Makes urine dilute

5. None of the above



Q) The part in human body impermeable to water is

1. Decending limb of loop of Henle

2. Ascending limb of loop of Henle

3. Glomerulus

4. Bowman's capsule

5. All the above


Q) During an allergic response, Histamin is released from

1.B Lymphocytes

2. T lymphocytes

3. Mast cells

4. Special lymphocyte that also secret IgE


Q) Prostaglandins are biologically active molecules that are
1. monocyclic

2. Bicyclic

3. Tricyclic

4. Polycyclic
5. None of the above

Sample Questions - PART 11

Q) At the organismal level Tay-Sach syndome is due to




1. Incomplete dominance

2. Codominance

3. Homozygous recessive allele

4. Homozygous dominant allele

5. Heterozygous recessive allele




Q) The ozygen binder in Hemocyanine is




1. Magnesium

2. Copper

3. Cobalt

4. Iron

5. Zinc




Q) What change in the dissociation curve of hemoglobin is produced when there is a decrease in pH in tissues




1. Curve shifts to right side

2. Curve shifts to left side

3. Line parallel to X- axis

4. Line parallel to Y-axis

5. None of the above




Q) There is a production of H+ inside the erythrocytes when the CO2 enters the erythrocyte




H2CO3 = HCO3- + H+




. The Bohr shift is not occuring in RBC as a result of this because




1. H+ is removed back to tissues

2. H+ is taken by hemoglobin

3. H+ is converted to H2O

4. H+ is liberated as Hydrogen gas

5. None of the above




Q) In humans most of the carbon dioxide produced is trasported to lungs as




1. CO2 dissolved in blood

2. CO2 attached to amino end of polypeptide chain of hemoglobin

3. HCO3- in plasma

4. H2CO3 in erythrocytes

5. None of the above




Q) Rate of oxgen consumption per gram of body mass of a mouse and an elephant suggests that




1. As animals increase in size the rate of consumption of oxygen per gram of body mass increases

2. As animals increase in size the rate of consumption of oxygen per gram of body mass decreases

3. Whatever be the size of animal the rate of consumption of oxygen per gram of body mass remains constant

4. None of the above




Q) The mouse color genes exhibits




1. Pleitropy

2. Epistasis

3. Codominance

4.Semidominace

5. None of the above

Sample Questions - PART 10

Q) Which is true about arteries

1. They carry oxygen containing blood

2. They carry deoxygenated blood

3. They carry blood towards capillaries

4. They carry blood away from capillaries

5. Both 1 and 4

Q) Which of the following is not seen in serum

1. Immunoglobulins

2. Protein

3. Clotting factors

4. Plasma

5. None of the above

Q) The best description of Acclimatization is

1. It is an irreversible change

2. It is similar to adaptation

3. It is a temporary change

4. It contributes to natural selection more than any otjer factor

5. None of the above

Q) As the stroke volume increases the heart rate

1. Increases

2. Decreases

3. Remains the same

4. Increases first then decreases

5. None of the above

Q) Mitochondria is not seen in RBC. This means that

1. RBCs are dead cells

2. They depend upon anaerobic matabolism

3. They donot produce ATP

4. They are attracted more towards ozygen

5. Both 3 and 4

Q) Arthrosclerosis is caused due to the clot in the arteries. This clot is due to

1. HDL

2. Clptting factors in blood

3. LDL

4. Low blood pressure

5. High blood pressure

Q) When the pH of the CSF decreases, the breathing rate

1. Increases

2. Decreases

3. This has no effect

4. Stops

4. None of the above

Q) With increase in age

1. The tidal volume increases

2. The vital capacity increases

3. The residual volume decreases

4. The tidal volume decreases

5. The residual volume increases

Q) The respiration in humans can be considered as

1. Positive pressure ventilation

2. Negative pressure ventilation

3. Both 1 and 2

4. None of the above

5. Positive durinf inhalation and nagative during exhalation

Sample Questions - PART 9

Q) Which of the following gland secreates a clear mucus that makes the withdrawal an ineffective method of contraception during intercourse

1. Seminal vesicle

2. Leydic cells

3. Bulbourethral gland

4. Pineal gland

5. Seminiferous tubules

Q) How many eggs do a female produce during her life time

1. 1 to 2 millions

2. Around 500

3. Around 1000

4. Around 100

5. None of the above

Q) The primary oocyte is arrested at

1. Metaphase of meiosis 2

2. anaphase of meiosis 1

3. Prophase of meiosis 1

4. Prophase of meiosis 2

5. None of the above

Q) The cytokinesis occuring during meiosis 1 and meiosis 2 in the development of egg in female

1. Is proportional

2. Is unproportional

3. Created polar bodies

4. Both 1 and 3

5. Both 2 and 3

Q) Sildenafil sulfate inhibit

1. Nitric Oxide breakdown

2. Nitric Oxide synthesis

3. Prostaglandins

4. cAMP breakdown

5. None of the above

Sample Questions - PART 8

Q) The additional amino acid - apart from essential amino acids, that an infant requires essentially is
1. Tyrosine
2. Histidine
3. Glutamate
4. Serine
5. None of the above

Q) A component of Coenzyme A is
1. Pantothenic acid
2. Folic acid
3. Thiamine
4. Phylloquinone
5. Vitamin B12

Q) Which of the following has an antioxidant activity together with vitamin E
1. Magnesium
2. Chlorine
3. Iron
4. Selenium
5. Cobalt

Q) Chief cells produce
1. HCl
2. Pepsin
3. Trypsin
4. Pepsinogen
5. Mucus

Q) Absorption of digested food occrus mainly in
1. Stomach
2. Small intestine
3. Jejunam and illeum
4. Duodenum
5. Colon

Q) Lacteal is a part of
1. Blood
2. Bone
3. Lymph
4. Immune system
5. Endocrine system

Q) The feeling of hunger is triggerd by which of the substance relased by the stomach
1. Leptin
2. Ghrelin
3. Glucagon
4. CCK
5. None of the above

Sample Questions- PART 7

Q) Compared to smaller organisms, larger organism generally have
1. Larger cells
2. Smaller cells
3. More number of cells
4. Both 1 and 2
5. Both 2 and 3

Q) In a cell the most efficient import/export is possible when there is a
1. High volume
2. High surface area
3. High volume to surface area
4. High surface area to volume
5. None of the above

Q) What is common in all the epithelial cells
1. They are polarized
2. They are multifunctional
3. They do not have nucleus
4. They have multi layers
5. None of the above

Q) Which is found in middle lamella of plants
1. Cellulose
2. Liginin
3. Chitin
4. Sucrose
5. None of the above

Q) Suberin is found in
1. Leaves
2. Shoot apex
3. Casparian strip
4. Xylem
5. Phloem

Q) Tracheids and vessels only have
1. Symplast pathway
2. Trasmembrane pathway
3. Apoplast pathway
4. Active trasport
5. None of the above

Q) Excessive traspiration in plants occurs when
1. Stomata is closed
2. Stomata is closed and k+ concentration is more in guard cells
3. Stomata is open and H+ concentration is more in guard cells
4. H+ concentration is less in guard cells
5. None of the above

Q) Translocation is
1. Under positive pressure
2. Negative pressure
3. From sink to source
4. Both 1 and 3
5. Both 2 and 3

Q) Homeostasis in animals is said to be in
1. Static equillibrium
2. Dynamic equillibrium
3. Drives some reactions to completion
4. Never in equillibrium
5. None of the above

Q) poikilotherms can be considerd as
1. Ectotherms
2. Endotherms
3. Homeotherms
4.None of the above
5. Warm blooded animals

JNU Sample Question - PART 6

Q) A perfect flower must have
1. Pistils
2. Stamen
3. Sepals and petals
4. 1 and 2
5. Only sepals

Q) Vasular cambium forms
1. Primary xylem and phloem
2. Secondary vasular tissues
3. Primary roots
4. Both 1 and 3
5. None of the above

Q) The water potential of pure water is
1. Zero
2. Greater than zero
3. Less than zero
4. Can be zero but can never be less than zero
5. None of the above

Q) Mature xylem has the following organells except
1. Nucleus
2. Mitochondria
3. Chloroplasts
4. Ribosomses
5. None of the above

Q) Sieve tube elements do not have
1. Living cells
2. Nucleus
3. Ribosomes
4.Both 2 and 3
5. None of the above

Q) Collenchyma typically contains
1. Pectin
2. Lignin
3. Cellulose
4. All but not 2
5. All but not 1

Q) Photosynthetically activa chloroplasts are present in
1. All epidermal cells
2. Leaf epidermal cells
3. Guard cells
4. Root epidermal cells
5. None of the above

Q) A cell can expand when the water potentuial in its vacoule is
1. Lower than outside
2. Higher than outside
3. Equal to outside
4. None of the above

Q) Pfr form of phytochrome is
1. Physiologically inactive
2. Formed on exposure to red light
3. Formed on exposure to far-red light
4. Formed only in the seeds
5. None of the above

Q) Long dau plants can be encouraged to flower by interuupting
1. The days with periods of darkness
2, The nights with far-red light
3. The nights with red light
4. The nights with Blue light
5. None of the above

JNU Sample Questions- PART 5

Q) The plants are thought to be evolved from
1. Charophyte
2. Bryophyte
3. Lymnophyte
4. Pterophyte
5. None of the above

Q) The dominant stage in the life cycle of Bryophyte is
1. Sporophyte
2. Gamatophyte
3. Both
4. Partial gamatophyte
5. None of the above

Q) Pterophyte contains
1. Seedless plants
2. Non-vasular plants
3. Vascular seed plants
4. Eudicot plants
5. None of the above

Q) Which of the following is a dead cell at maturity
1. Guard cells
2. Sieve elements
3 .Tracheids
4. Meristems
5. Both 2 and 4

Q) Inside the ovary the egg is guarded by
1. Egg shell
2. Synergids
3. Micropyle
4. Cotyledons
5. None of the above

Q) Eudicots are
1. True monocots
2. True dicots
3. Neither monocot nor dicot
4. True dicots
5. Ancestor of monocots

Q) Onion can be considered as
1. Modifies root
2. Modified stem
3. Modified leaves
4. Normal stem
5. None of the above

Q) Stolons can be seen in
1. Strawberry
2. Gymnosperms
3. Apples
4. Sunflower
5. All of the above

Q) Pneumatophores can be seen in
1. Woody trees
2. Mangrooves
3. Evergreen trees
4. DIcots
5. All the above

Q) The sperm nuclei fuses with
1. Egg and synergids
2. Egg only
3. Egg and central nuclei
4. Central nuclei only
5. None of the above

Q) After fertilization the ovule developes in to
1. Fruite
2. Endosperm
3. Flower
4. Seed
5. Root cap

Q) The gynoecium is a collective name for
1. Anthers
2. Stames
3. Pistils
4. Carpels
5. None of the above

Q) The ploidy level of endosperm is
1. 1n
2. 2n
3. 3n
4. 4n
5. None of the above

Q) Monocots have
1. Orderd vascular tissues
2. One - pored pollen
3. Net like veins
4. Free swinmming sperms
5. All of the above

JNU Sample Qusetions Part 4

Q) The essential amino acid(s) are/is
1. Glycine
2. Valine
3. Methionine
4. 1 and 3
6. 2 and 3

Q) Which one of the following statement is incorrect:
1. The ration of four different nucleotides vary from one species to another.
2. The base composition vary with age, nutritional factor or change in environment condition
3. Irrespective of source of DNA, the base compostion of A is equal to T and G to C
4. The DNA extracted from same tissues of different species have same base composition
5. None of the above

Q) The flowers which have a single plane of division to obtain mirrior image halves are called
1. Pelorial flowers
2. Actinomorphic flowers
3. Zygomorphic flowers
4. Heteromorphic flowers
5. None of these

Q) A person ingested methylated spirit.The treatment he receives normally exploites which of the following types of enzymatic reactions
1. Non competitive inhibition
2. Allosteric inhibition
3. Competitive inhibition
4. Allsoteric enhancement
5. Both 3 and 4

Q) TaqMan Probe is used for
1. RT-PCR
2. PCR
3. In vitro hybridization
4. qRT-PCR
5 DIdeoxy chain termination reaction

Q) In amino acid sequencing using ninhydrin, the detection is of
1. Beta amino acid
2. Alpha amino acid
3. N terminal amino acid
4. C terminal amino acid
5. None of the above

Q) Find the mismatched pair
1. Carboxypeptidase A - N-Terminal
2. Trypsin - C terminal
3. Cyanoge Bromide - Recognize Methionine
4. Chymotripsin - Phenyl alanine
5. None of the above

Q) Sanger's Reagent is
1. 1 fluro-2,4-dinitrobenzene
2. 2,4-dichloroaceticacid
3. Sidenafil citrate
4. Phenyl isothiocyanate

Q) Edman degradation detect
1. C terminal amino acid
2. N terminal amino acid
3. Amino acid that has aromatic side chains
4. Aliphatic amino acids
5. None of the above

JNU Sample Questions Part 3

Q) What was the condition of early atmosphere
1. Oxidizing
2. Reducing
3. Mixed
4. Partially reducing
5. None of these

Q) Given the following processes, Which one of the list does not take place in
mitochondria?
1. DNA synthesis
2. Protein synthesis
3. Fatty acid biosynthesis
4. Beta oxidation of fatty acids
5. None of the above

Q) What is meant by "sapiens" in "Homo sapiens"
1. Errect
2. Walking
3. Wise and intelligent
4. With backbone
5. None of these

Q) Females can have a more number of orgasm than males because:
1. Females have less refractory period
2. Females have less excitement
3. Females have more vasocongetion
4. Femalesa have short orgasm
5. None of hte above

JNU Sample Question Part 2

Q) The meaning of the greek word HORMAN from which the term HORMONE was adapted is
1. To secreate
2. To respond
3. To inhibit
4. To trasport
5. None of these

Q) The development of paws in mouse is caused by
1. Mutation
2. Apoptosis
3. Electroporation
4. Tissue specific inhibition
5. None of these

Q) Linker DNA connect
1. Nucleosomes
2. Chomatids
3. Two DNA strands
4. Homologous chromosomes
5. None of these

Q) A plasmid can hold up to
1. 100kb nucleotide sequence
2. Less than 100kb but more than 65kb nucleotids
3. 12kb nucleotids
4. 24kb nucleotids
5. None of the above

Q) Antibodies produced against Rh+ antigens in Rh- mothers are
1. IgM
2. IgA
3. IgG
4. IGE
5. Both i and 3

Q) The famous scientist who got the Nobel Prize twice is:
1. Sanger
2. James Watson
3. Stanley
4. James chadwick
5. None of these

Q) Fat digestion start at
1. Mouth
2. Small intestine
3. Stomach 4
. Large intestine
5. None of these

Q) Example for a day neutral plant is:
1. Sugarcane
2. Spinach
3. Rice
4. Crysanthemum
5. None of the above

Q) The factor which control the flowering is:
1. Critical night length
2. Critical day length
3. Critical temperature
4. Both 2 and 3
5. None of these

Q) When a developing plant's stem undergo a stress the plant produces
1. Ethylene
2. ABA
3. Brassinosteriods
4. Gibberilines
5. Cytokinins

Q) When ATP to AMP ratio is lowered
1. PFK is activated
2. PFK is inactivated
3. No change
4. Enolase is inhibited
5. Both 1 and 4

Q) Diphtheria toxin is produced by
1. Clostridium species
2. Coreynebacterium species
3. Staphylococcus apecies
4. Pseudomonas species
5. Toxoplasma species

Q) Viriods contain
1. Only RNA
2. Only DNA
3. Both 1 and 2
4. Only protein
5. None of these

Q) X0 chromosome condition is found in
1. Turner's Syndrome
2. Feminism
3. Downs' syndrome
4. Males only
5. Both 1 and 4

JNU Sample Questions from Endocrine System

These are the sample questions that have appeared in various entrance examinations conducted by JNU. If anyone need the answer, please leave a comment. Comment also if you know the answers.

Q) The Anterior Pitutory gland is developed from

1. A tissue of mouth that finally detached from mouth
2. A tissue that grew downward from hypothalamus
3. A group of neurons
4. A portoin of Posterior Pitutory gland
5. None of these

Q) Mark the BEST answer: Oxytocin has

1. Negative feedback
2. Positive feedback
3. Substrate inhibition
4. All of the above
5. None of the above

Q) Hormone(s) which is having both tropic and non tropic effect is/are

1. FSH and LH
2. PRL and MSH
3. Only TSH
4. Only GH
5. None of these

Q) Grave's Disease is

1. Hyperthyroidic disorder
2. Hypothyroidic disorder
3 Cause due to accumulation of TSH in blood
4. Caused when Antibodies bind to and activate TSH receptor
5. Both 1 and 4

Q) Catecholemines are

1. Hormones
2. Neurotrasmitters
3 Peptides
4. Both 1 and 2
5 None of these

Q) Glucocorticoid injection through skin exploits its:

1. Antioxidant activity
2. Anti inflamatory activity
3. Vasodialation activity
4. Both 1 and 2
5. None of the above

Q) Accumulation of TSH in iodine deficient individuals' blood causes:

1. Gout
2. Grave's Disease
3. Goiter
4. Anemia
5. None of the above

Q) Imagine that the testes of a developing mouse embryo is removed. The born mouse will be:

1. A female
2. A male
3. The mouse will die before birth
4. A male with female characteretics
5. None of these

Q) Melatonin is produed more during

1. Winter
2. Summer
3. Autumn
4. All the seasons
5. None of the above

Q) The hormone that control suprachiasmatic Nucleus is

1. Calcitonin
2. Melatonin
3. GnRH
4. Triiodotyrosine
5. None of the above

Q) The hormone that stimulates production of glucose from non-carbohydreate precursors is

1. Insulin
2. Glucagon
3. Epinephrin
4. Glucocorticoids
5. Nosne of the above

JNU Questions Part 1

Q) Which of the following best describes the movement of Tendrills?

1. Geotropism
2. Phototropism
3. Thigmotropism
4. Etiolatioon
5. None of the above

Q) Regarding the affinity of both of the given enzymes to carbon dioxide,Which of the following are/is correct?

1. Rubisco = PEPcase
2. Rubisco <> PEP case
4. Data insufficient

Q) Which of the following is/are non-enzyme proteins?

1. Ascorbic acid
2. Hemoglobin
3. Insulin
4. keratin
5. 1 and 4
6. 3 and 4

Q) Aconitate is

1. Pigment neccesary for calvin cycle
2. Fe-S protein
3. Involved in dehydration and rehydration reactions
4. 2 and 3
5.1 and 3

Q) Which is true about Turner's syndrome

1. Only affects males
2. Affects both males and females
3. Found in Homosexuals
4. Only found in females
5. Both 3 and 4

Q) Nitric Oxide,NO

1. Prevents vasodialation
2. Helps in vasodialation
3. Decrease heart beat
4. Inhibit apotosis
5. None of the above

Q) 2,4-D is
1. Modified adenine
2. Syntehetic IndoleAceticAcid
3. Fertilizer
4. Pharmacologic agent
5. None of these

Q) Which of the following is not an energy currency of the cell?

1. Na= gradient across Plasma membrane
2. H+ gradient across the inner mitochondrial Memmbrane
3. Glucose
4. ATP
5. None of these

Q) Cytokinins are

1. Modified adneine
2. Inodoleaceticacid
3. Indolesalisylicacid
4. Steriods
5. None of these

Q) The organ(s) which is/are responsive to glucagon

1. Liver
2. Kidney
3. Liver not kidney
4. Kidney and liver
5. None of the above