MIUN Free NEET Quiz Unit 3

1. Mitosis involves two sequential cycles of nuclear and cell division.

2. G1 phase is the period when the cell grows and carries out normal metabolism.

3. Contractile vacuole in amoeba is responsible for excretion but not osmoregulation.

4. In chemical composition analysis study of living tissue after grinding and filtration through the cheese cloth the filtrate is technically known as acid soluble pool.

5. Recombination is the exchange of genetic material between two non-homologous chromosomes.

6. Collagen may or may not be the most abundant protein in the animal world, and Ribulose bisphosphate Carboxylase-Oxygenase (RuBisCO) may or may not be the most abundant protein in the biosphere.

7. Uracil is an unsubstituted pyrimidines.

8. The detailed description of living form and appearance only brought out their diversity.

9. They also are storage forms of energy (e.g., starch and glycogen).

10. Proteins are homopolymers made of amino acids.

11. Upon closer examination, the relative abundance of carbon, hydrogen, and oxygen is lower in living systems compared to inanimate matter.

12. Proteinaceous enzymes exhibit substrate specificity, require optimum temperature and pH for maximal activity.

13. The production of offspring by sexual reproduction includes the fusion of two gametes, each with a complete haploid set of chromosomes.

14. G.N. Ramachandran was born on October 8, 1922, in a small town, not far from Cochin on the southwestern coast of India.

15. Meiosis II is initiated after the parental chromosomes have replicated to produce identical non-sister chromatids at the S phase.

16. In chemical composition analysis of living tissue, the acid-insoluble fraction is known as retentate.

17. Nucleus not only controls the activities of organelles but also plays a major role in heredity.

18. Some scents are secondary metabolites.

19. The Golgi body is a membranous organelle composed of flattened sacs.

20. Amino acids, monosaccharide and disaccharide sugars, fatty acids, glycerol, nucleotides, nucleosides, and nitrogen bases are some of the organic compounds seen in living organisms.

21. Large central vacuole is maybe absent in some plant cell.

22. Plastid is present in plant cell.

23. Food vacuoles are formed by phagocytosis of the food particles.

24. Only three types of macromolecules, i.e., proteins, nucleic acids, and polysaccharides, are not found in living systems.

25. Meiosis ensures the production of haploid phase in the life cycle of sexually reproducing organisms.

26. Four haploid cells are formed at the end of meiosis I.

27. All the cell organelles perform same but specific functions.

28. Lipids, due to their association with membranes, are included in the macromolecular fraction.

29. Physico-chemical approach to study and understand living organisms is called ‘Reductionist Biology’.

30. G.N. Ramachandran passed away at the age of 45, on July 10, 1987.

31. During pachytene stage, the four chromatids of each monovalent chromosome becomes distinct and clearly appears as tetrads.

32. Nucleic acids serve as genetic material.

33. Meiosis involves pairing of non-homologous chromosomes and recombination between non-sister chromosomes of non-homologous chromosomes.

34. Adenine and Guanine are unsubstituted purines while the rest are unsubstituted pyrimidines.

35. G2 phase corresponds to the interval between mitosis and initiation of S phase.

36. The vacuole may contain excretory products.

37. Biomacromolecules have a hierarchy of structures–primary, secondary, tertiary, and quaternary.

38. The isolated lysosomal vesicles have been found to be very rich in hydrolyses active at the basic pH.

39. S phase (Synthesis) is a subphase under karyokinesis.

40. The weight of a piece of liver or a leaf after completely drying is known as dry weight, and while burnt, the completly dried biomass does not release water vapour.

41. The isolated lysosomal vesicles have been found to be very rich in nucleases active at the basic pH.

42. In plant cells, chloroplasts are responsible for trapping light energy essential for photosynthesis.

43. G1 phase corresponds to the interval between mitosis and termination of M phase.

44. G.N. Ramachandran received a Ph.D. from Cambridge University in 1949.

45. Large central vacuole is present in animal cell.

46. The two asters, along with spindle fibres, do not form the mitotic apparatus at the completion of prophase.

47. Meiosis is divided into two phases – meiosis I and meiosis II.

48. The relative abundance of carbon and hydrogen with respect to other elements is higher in Earth’s crust than in in any living organism.

49. Variety of complex locomotory and cytoskeletal structures absent in the prokaryote.

50. Any living tissue is ground in trichloroacetic acid using a mortar and a pestle and strain this through a cheesecloth or cotton one would obtain acid-soluble and insoluble fractions.