CELL BIOLOGY

1. Cell theory was propounded by — Schleiden & Schwann.

2. The chemical substance most abundantly present in the middle

lamella is — Ca—pectate & Mg—peciaie.

3. The continuity of cytoplasm from cell to cell Is maintained through —

Plasmadesmata.

4. A differentially permeable membrane surrounding the vacuole is — Tonoplast (Lipoprotein).

5. The cell membrane formed by endopiasmic reticulum and the product of dictyosome during cytokinesis is — Phragmoplast.

6. The non living content of the cell vacuole — Cell Sap.

7. The cell-organelle which is considered to be rich in catabolic enzymes —

Mitochondria.

8. The part of mitochondria in which the succimic dehydrogenase enzyme is located — Inner membrane.

9. The part of Mitochonderia in which the ATP is generated — F1 particle (oxysomes).

10. The photosynthetic units of cell are termed — Quantasomes discovered by—ParkS Biggins.

11. Cellular organelles containing hydrolytic enzymes (hydrqlases enzyme) are called — Lysosomes.

12. The cell organelle, which is known as the site of photorespiration — Peroxisome.

13. Glyoxalate cycle plays an important role in the conversion of — Fatty acids into carbohydrates.

14. The chief role of nucleolus in a nucleus concerns — Ribosome synthesis.

15. The main function of centriole is — Formation of spindle fibers.

16. Nucleoids are found in all — Bacterial cells & Blue green algae.

17. The term heterochromatin was given by — Emil Heitz.

18. A chromatid represents— One half of a chromosomes.

19. A chromosome with the centromere present in a diffused condition along its length is — Polycentric.

20. If the centromere of chromosome is terminal, in middle position, slightly

away from middle — Telocentric, Metacentric & submetacentric

21. Instead of chromosome which of the following has only DNA — Anabaena.

22. The process by which DNA of the nucleus passes genetic information to m-RNA is called —Transcription.

23. The Noble Prize to A Kornberg & S. ochoa was given—for artificial synthesis of — DNA & RNA respectively.

24. The theory of Lineage — "Omnis v cellulae cellula which mean's every

cell rise from pre-existing cell by some type of division" was given by - Virchow.

25. Nucleoproteins most probably provided the first sign of—Life:

26. The enzymes which are needed during DNA replication is — DNA Polymerase & DNA ligase.

27. Nucleotides are formed of purines, pyrimidine bases, sugar and phosphates.

28. The cleavage of nucleus without recognizable chromosomes is called —Amitosis.

29. The term meiosis and mitosis was given by — Farmer & Moore & W. Fleming respectively.

30. The change of chromosomal parts between non homologous pairs of

chromosomes is known —Translocation

31. The zygotic meiosis takes place in — Chlamydomonas.

32. Terminalization is a process related with—Diakinesis.

33. Crossing over is exchange of genetic material between non-sister chromatids of homologous chromosomes — at 4 strands

stage during pachvtene.

34. The segment of DNA which is participates in crossing over is — Recon.

35. The phase which occupies the longest period in cell cycle is — Interphase.

36. Synaptonemal complex is observed during —Zygotene.

37. Anastral mitosis is the characteristic of—Higher plants.

38. The number of linkage groups in a cell having 10 pairs of chromosomes are — 10.

39. The cell which undergoes reduction division is called —Meiocyte.