Download Downloads - Dr. Sahu`s Bio Classes, Best Coaching for NEET, PMT

DR. SAHU’S AIPMT BOTANY CLASSES
( NO. -1 ; BIOLOGY TUITION OF CHHATTISGARH )
SHOP NO- 218; ZONAL MARKET; SECTOR – 10; BHILAI-NAGAR (CG)
TOPIC--- ORIGIN OF LIFE
Q.1- Abiogenesis means------------------ Spontaneous generation
Q.2. Who introduced the idea of spontaneous generation------ Anaximander
Q.3. Theory of spontaneous generation was given by--------- Van Helmont
Q.4. Which of the following experiments suggests that simplest living organisms could
not have originated spontaneously from nonliving matter----------- meat was not
spoiled, when heated and kept sealed in a vessel.
Q.5. Swan-necked flask experiment was done by----- Louis Pasteur
Q.6. Louis Pasteur is famous for ----------- Germ theory of disease
Q.7. The idea that life originates from pre-existing life is reffered as -- biogenesis theory
Q.8. Who was one of the greatest advocates of theory of special creation – Father Saurez
Q.9. Cosmozoic theory of the origin of life was proposed by----- Richter
Q.10. The founder of “Theory of catastrophism” is --------- Georges Cuvier
Q.11. About how long ago was the earth formed----- 4.6 billions ago
Q.12. The theory which explains the origin of life and is based upon experiments is ------------------------- Chemical theory
Q.13. According to Oparin, which one of the following was not present in the primitive
atmosphere of the earth-------------- Oxygen
Q.14. Which one is present today but was absent about 3 to 5 million years ago ---- O2.
Q.15. The basic components of atmosphere of primitive earth were---- ammonia,
methane, hydrogen and water .
Q.16. There is no life in Moon due to the absence of ------------ Water
Q.17. Life originated in the era --------------- precambarian
Q.18. The water of primitive ocean during the time of origin of life has been called “hot
dilute soup of oceanic substances” by---------- J.B.S.Haldane
Q.19. One of the possible early sources of energy was / were ---------- UV rays and
lightening.
Q.20. Which compound had a very important role in prebiotic evolution--------- CH4
Q.21. Stanley Miller proposed origin of life by------------- Chemical synthesis
Q.22. The first experiment on chemical evolution and origin of life was carried out by------------------- Miller and Urey
Q.23. The spark-discharge apparatus to test chemical evolution of life was designed by-------------------------- Urey and Miller
Q.24. Findings of Miller’s experiment on origin of life has provided evidence for -------------- Oparin—Haldane theory
Q.25. Which of the following is formed in Stanley Miller’s classic experiment-----------Amino acids
Q.26. Which one of the following amino acids was not found to be synthesized in
Miller’s experiment---------------- Glutamic acid
Q.27. Origin of life as a result of chemical evolution was property explained by--- Miller
Q.28. Miller passed an electric discharged in a mixture of----------- Methane ; Hydrogen;
Ammonia and water vapour
Q.29. The gases used in the spark- discharged apparatus were--- H2; CH4 and NH3
Q.30. Scientist who performed experiment for the prediction of origin of life by using
CH4; NH3 ; H2O and H2 was----------- S. L. Miller
Q.31. Miller synthesized simple amino acods from one of the following mixtures in an
experiment-------------- CH4; NH3; H2 ( 1:2:1) and water vapour
Q.32. Of the following which mixture, Miller used to solve the problem of origin of life------ Methane---------Ammonia------------Hydrogen----Water
Q.33. Formation of most of the amino acids as well as adenine and other nucleic acid
bases from inorganic molecules was experimentally shown by------ H. Urey
and S.L. Miller
Q.34. Experiment to prove origin of life by chemical basis is done by Urey and Miller.
They used NH3 and-------------CH4 , H2O , and H2
Q.35. Stanley Miller performed and experiment to prove the origin of life.They took
gases NH3 and H2 along with---------- H2O and CH4
Q.36. On the primitive earth, polymers such as proteins and nucleic acids in aqueous
suspension formed the spherical ggregates.These are called------------- coacervates
Q.37. Which of the following evolved first--------------- Coacervates
Q.38. Under certain conditions scientists haveobtained cell-like structures.these are
known as------------ Coacervates
Q.39. Coacervates are ---------- colloidal droplets & contain nucleoprotein
Q.40. Coacervates werte experimentally produced by---------- Sidney Fox and Oparin
Q.41. Assertion : Coacervates are belived to be the precursors of life.
Reason:- Coacervates were self duplicating aggregates of proteins surrounded by
lipid molecules.------------------------Ans:---‘C’
Q.42. First cell produced on Earth is--------------Protobiont
Q.43. The basis of life is ------------------Nucleic acid
Q.44. The correct sequence of the substances appeared during the course of origin of
life on earth was---------- ammonia; amino acids; proteins; nucleic acids.
Q.45. First life on earth were---------- Chemoheterotrophs
Q.46. The first organisms which were anaerobes are termed as------ Chemoheterotrophs
Q.47. It is believed that the organisms first inhabited Earth’s surface were—Heterotrphs
Q.48. Organisms which obtain energy by the oxidation of reduced inorganic compounds
are called-------------- Chemoautotrophs
Q.49. Oxygen producing photosynthesis bacteria are believed to have originated some----3500---3800 million years ago
Q.50. Which was first photosynthetic organisms---------------- Cyanobacteria
Q.51. Which of the following planets is called “twin of the Earth”-------- Venus
Q.52. The oldest fossil record from India is of a blue green alga which is 3.2 billion
years old. It is ---------Archeospheroides.
Q.53. Transformation of early reducing atmosphere of the Earth into an oxidizing
atmosphere was mainly due to the activities of--------- Aerobic synthesizers
Q.54. Assertion:-- The earliest organisms that appeared on the Earth were non-green and
presumably anaerobes.
Reason:- The first autotrophic organisms were the chemoautotrophs tha never released
oxygen.
Ans:---------‘B’
Q.55. Which was nor present in primitive atmosphere—[a] CH4 [b] NH3
[c] Water
Ans:---- [d] None of these
Q.56. The hypothesis that the early atmosphere, combined with an energy source,
produced organic monomer was developed in the 1920s by-------- Oparin and Haldane
Q.57. Synthesis of amino acids to prove that amino acids were formed in primitive ocean
was experimentally proved by------------- Stanley Miller
Q.58. Coacervates belongs to the category of------------ molecular aggregates
Q.59. According to one of the most accepted theory; the Earth atmosphere before any
life had originated consisted of water; H2; NH3 and--------------- CH4
Q.60. The concept of chemical evolution is based on----- possible origin of life by
combination of chemicals under suitable environmental conditions.
Q.61. Believers in spontaneous generation theory assumed that organisms--- arose from
non-living materials
Q.62. The most primitive cell-like chemical aggregation capable of growth and division
were--- microspheres
Q.63. In the origin of life, microspheres are most primitive protobiont, which have a
membrane of--------- lipid and proteins
Q.64. The synthesis of complex molecules was proved by------ Stanley Miller
Q.65. According to abiogenesis life originates from-------- non-living
Q.66. In the early Earth,water and CO2 were produced by the combination of O2 with---------- ammonium and methane
Q.67. The first fossil evidence of fossil dates back from- 4 billion years ago
Q.68. According to available evidence, life evolved through the process of---- chemical
evolution
Q.69. Who proposed that the first form of life could have come from pre-existing nonliving organic molecules---Oparin and Haldane
Q.70. The important gas which was absent during the origin of life on Earth-----Oxygen
Q.71. The prebiotic atmosphere of the earth was of a reducing nature.It was transformed
into an oxidizing atmosphere of present day due to the emergence of-----Cyanobacteria
Q.72. Which gas was probably least abundant in the early atmosphere------- Oxygen.
<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
Dr. S.K.Sahu;M.Sc.Botany( Gold Medalist); Ph.D. Botany; FAPS; 29 yrs exper.- professor; Dr. Sahu’s
Biology Classes is One of the best AIPMT/AIIMS bio coaching of Chhattisgarh; India