MIUN Free NEET Quiz Unit 3

1. Cells at the end of prophase, when viewed under the microscope, do not show the nuclear envelope.

2. A description of cell structure is inessential to understand about the cell.

3. Metaphase is marked by the alignment of chromosomes at the equatorial plate.

4. They are not storage forms of energy (e.g., starch and glycogen).

5. α-helix and β-sheet structures of protein are proposed by G.N. Ramachandran.

6. G1 phase (Gap 1) is a subphase under M phase.

7. Endoplasmic reticulum contains tubules or cisternae.

8. Cells at the end of prophase do not show the endoplasmic reticulum.

9. In chemical composition analysis study of living tissue, the acid Insoluble pool is known as filtrate.

10. Due to its distinct structural dissimilarity from the substrate, the inhibitor competes vigorously with the substrate for the substrate-binding site of the enzyme.

11. In studying and understanding the physiological and behavioural processes, one can take a physico-chemical approach and use cell-free systems to investigate.

12. Concanavalin A is obtained from Jack pea plant.

13. Meiosis involves two sequential cycles of nuclear and cell division called meiosis I and meiosis II but only a single cycle of DNA replication.

14. Ricin is not a toxin and a secondary metabolite.

15. G2 phase (Gap 2) is a subphase under cytokinesis. 

16. Physico-chemical approach of studying cells will tell us what types of organic compounds are present in living organisms.

17. The completion of prophase is indicated by the observation of chromosomes consisting of two chromatids attached together at the centromere.

18. In plant cells the vacuoles can occupy up to 90 per cent of the volume of the cell.

19. The interphase is called as resting phase.

20. Cell theory created a sense of mystery around living phenomena, i.e., physiological and behavioural processes.

21. Eukaryotic cells possess an organised nucleus without a nuclear envelope.

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

23. Succinate is a substrate of succinic dehydrogenase.

24. The concepts and techniques of physics and chemistry are not applied to understand biology.

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

26. Cells are described as still containing a nuclear envelope at the end of prophase.

27. G.N. Ramachandran, an outstanding figure in the field of protein structure.

28. Microscopic examination of cells at the end of prophase indicates the presence of the nucleolus.

29. When the inhibitor closely resembles the substrate in its molecular structure and enhances the activity of the enzyme, it is known as a competitive inhibitor.

30. The completion of prophase can be marked by chromosomal material disintegrating into a loose network instead of forming compact mitotic chromosomes.

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

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

33. Centrosome and centriole form the basal body of cilia and flagella that facilitate movement.

34. In the presence of competitive inhibitors, the substrate can bind efficiently, leading to an increase in enzyme action.

35. Polysaccharides are components of cell wall in plants, fungi and also of the exoskeleton of arthropods.

36. Ricin is obtained from Ricinus communist plant.

37. The relative abundance of other elements with respect to carbon and hydrogen is lower in any living organism than in earth’s crust.

38. The concepts and techniques of physics and chemistry are applied to understand biology.

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

40. Rubber is not a polymeric substance and a secondary metabolite.

41. The endomembrane system includes ER, Golgi complex, lysosomes and vacuoles.

42. Cell division stops with the formation of the mature organism, not continues throughout its life cycle.

43. Prophase I is shorter than pachytene.

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

45. G1 phase spans between mitosis and initiation of DNA replication.

46. G.N. Ramachandran was the founder of the ‘Madras school’ of conformational analysis of biopolymers.

47. The most abundant chemical in living organisms is not water.

48. S phase (Synthesis) is a subphase under cytokinesis.

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

50. In chemical composition analysis study of living tissue, the acid soluble fraction is known as filtrate.