Question Bank No: 6

1. The hormone which helps in stimulation of secretion of pancreatic juice

 a)Secretin
 b)Gastrin
 c)Enterokinase
 d)Enterogasterone

2. Sometimes fluid is accumulated in tissues, the condition is called oedema. Oedema occurs due to

 a)Rupture of RBC
 b)Deficiency of plasma proteins
 c)Phagocytosis
 d)Inflammation

3. Hair, nails, sweat glands, sebaceous glands of mammals develop from

 a)Epidermis
 b)Dermis
 c)Hypodermis
 d)First two from epidermis and last two from dermis

4. In mammals histamine is secreted by

 a)Mast cells
 b)Fibroblasts
 c)Neutrophils
 d)Lymphocytes

5. Presence of basement membrane is characteristic feature of

 a)Nerve tissue
 b)muscle tissue
 c)Epithelial tissue
 d)Connective tissue

6. Brush bordered columnar epithelium is found in

 a)Small intestine
 b)Stomach
 c)Oesophagus
 d)Fallopian tube

7. Which of the following vertebrate tissue would be an excellent source of collagen

 a)Liver
 b)Muscles
 c)Tendon
 d)Nerve

8. Sarcomere is the area between two

 a)A bands
 b)H bands
 c)I bands
 d)Z Bands

9. Volkmann's canals interconnect

 a)Bone marrow
 b)3rd and 4th ventricles of brain
 c)central canal and 4th ventricle
 d)Haversian canals

10. The white fibres are chemically formed of

 a)Actin
 b)Myosin
 c)Elastin
 d)Collagen

11. The fish used for destroying mosquito larvae is.

 a)Gambusiafish
 b)Scoliodon
 c)Jelly fish
 d)star fish

12. Ecto mycorrhizae are formed by members of kingdom fungi of class.

 a)phycomycetes
 b)ascomycetes
 c)basidiomycetes
 d)deuteromycetes

13. Which of the following grow symbiotically in the leaves of bio fertilizer water fern.

 a)rhizobium
 b)Klebsiella
 c)Rhibium
 d)Anabaena

14. Malathion, parathion and femitrothion belong to group of.

 a)triazines
 b)carbamates
 c)Pyrethroids
 d)Organophosphate

15. Bordeaux mixture was discovered by

 a)Harrison
 b)Khorana
 c)Watson
 d)Millardet

16. Biofertilizers are

 a)some bacteria
 b)fertilizerf formed by ploughing in of berseem
 c)fertilizers obtained by decay of dead organism
 d)Fertiliseres formed by mixing cattle dung with crop residue

17. The insecticide obtained from the roots of Derris elliptica is.

 a)Pyrethrum
 b)Rotenone
 c)Cinerin
 d)Nicotine

18. Root and stem nodulus fixing atmospheric nitrogen are found in

 a)Vigna sinensis
 b)Sesbanea aculeate
 c)Melilotus parviflora
 d)Sesbania rostrata

19. Cochineal insects have proved very useful for

 a)weed control
 b)Parthenium control
 c)cactus prevention
 d)Azolla culturing

20. Up rooting of weeds is a method of controlling them.

 a)biologically
 b)Mechanically
 c)Ulturally
 d)Chemically

21. VAM is a.

 a)Bioherbicid
 b)ectomycorrhiza
 c)biopesticide
 d)endomycorrhiza

22. TCDD stands for.

 a)Trichlor- Dinitro- diquat
 b)Tetrachlorodibenzo -P- dioxin
 c)Trichloro- dinitro diethylamide
 d)Tetrachloro dinitrodioxide

23. Molecular scissors used in genetic engineering is.

 a)DNA polymerase
 b)DNA ligase
 c)Primase
 d)Restiction endonuclease

24. A clone of sheep Dolly has been made by

 a)Gene transfer
 b)Somatic cell cloning
 c)Nucleus transfer
 d)germinal cell cloning

25. ECOR-I enzyme is obtained from

 a)Virus
 b)bacteriophage
 c)salmonella
 d)Escherichia Coli

26. A poly- uridylic chain of mRNA is called.

 a)Homopolymer
 b)Co-polymer
 c)Polynucleotide
 d)Homogenous RNA

27. First successful inter- specific hybrid produced from leaf protoplast of Nicotiana glauca and N. longdersfi'i' by.

 a)Eli Lilly
 b)Carlson
 c)Charles Weismann
 d)Alec Jeffrys

28. Exons and introns are parts of.

 a)DNA
 b)RNA
 c)mRNA
 d)C DNA

29. Viruses were first crystallized by.

 a)Stanley
 b)Sumner
 c)Raus
 d)Iwanowsky

30. Free martin is an example of.

 a)Hormonal control of sex
 b)Sex reversal by gene
 c)Environmental control of sex
 d)Self sterility

31. tRNA attaches amino acid at its.

 a)31 end
 b)51 end
 c)Anti codon
 d)DHU loop

32. Blender experiment to prove DNA as genetic material was performed by

 a)Watson and Crick
 b)Meselson and Stahl
 c)Hershey and Chase
 d)Barbara Mac clintok

33. In Raus Sarcoma Virus contro dogma is.

 a)DNA RNA Protein
 b)DNA Protein
 c)DNA DNA
 d)RNA DNA RNA Protein

34. The operator gene of lac operon is turned on when lactose molecule bind ot.

 a)mRNA
 b)Operator gene
 c)Promotor site
 d)repressor Protein

35. During DNA replication the term 'leading strand' is applied to the one which replicates in

 a)5131 direction continuously
 b)5131 direction discontinuously
 c)3151 direction continuously
 d)3151 direction discontinuously

36. The scientist who first synthesized DNA invitrowas.

 a)A. Garrod
 b)J.D. Watson
 c)H.G. Khoranna
 d)A. KOrnberg

37. Proof reading after DNA replication is done by the enzyme

 a)DNA polymerase I
 b)Ligase
 c)exonuclease
 d)DNA polymerase -III

38. Procaryotic genetic system has.

 a)neither DNA nor histones
 b)Both DNA and histones
 c)DNA but no Histone
 d)Both DNA and histone

39. Ribosyme is a

 a)RNA molecule without phosphate
 b)RNA molecule working as an enzyme
 c)RNA molecule without sugar
 d)RNA molecule with extra phosphate

40. From DNA template with the sequence CTGATAGE the mRNA.

 a)GAUTATUG
 b)GUCTUTCG
 c)UACTATCU
 d)GACUAUCG

41. Distance between two genes is expressed in

 a)Centimeter
 b)Micron
 c)Centimorgan
 d)Amgstrum

42. Short Okasaki fragments are joined together by the enzyme .

 a)Polymerase
 b)Ligase
 c)Lipase
 d)liase

43. A sequence of three bases which stands for an aminoacid is called

 a)anitcodon
 b)cistron
 c)Peptide
 d)codon

44. Which of the following is a stop codon

 a)AUG
 b)GUG
 c)UAG
 d)UGG

45. The enzyme that unwinds DNA strands during replication is

 a)Topolsomerase
 b)Ligases
 c)Isomerase
 d)Helicases

46. In chronic myloid leukemia (CML). Which chromosome of malignant cells have shortened due to translocation.

 a)13
 b)14
 c)15
 d)22

47. Cri- du-chat syndrome is an infant disorder where the crying sound resembles a cat . This condition is due to point mutation of the type

 a)loss of half of the short arm of chromosome 5 in humans
 b)duplication of chromosome 5
 c)inversion of chromosome 5
 d)translocation

48. The chromosome number in Drosophila fly is

 a)46
 b)44
 c)23
 d)8

49. The largest chromosome is reported in

 a)Wheat
 b)Dictyostelium
 c)Neurospora
 d)Ophioglossum

50. Mutagens are

 a)genes that undergo mutation
 b)Agents that bring bout mutation
 c)The genes most susceptible to mutation
 d)genes that regulate mutation