ZOO501 Midterm Past Papers by Dining Discussion

OBJECTIVES

1. How many stategies for developmental commitment--------- 2
2. -------is a discipline that studied embryonic and other developmental processes-- -----Develpmental Biology
3. Insect characteristics are----------specification_____Syncytial
4. Mode of commitments are-------------------3
5. Third anatomical approach to developmental biology is-----Tetratology
6. An uncommitted cell can be described as---------------------Naïve
7. Potency is ----------------------property________Intrinsic
8. Cytoplasm that contains many nuclei is called -------------------- Syncytium.
9. The ectoderm forms -------- Epidermis, Nervous System, And Pigment Cells.
10. Series of extremely rapid divisions in zygote is ------Cleavage
11. Insect such as ___drosophila __Use All Three Modes Of Specification To Commit Their Cells To Particular Fates.
12. Regulative development arises from -----------Conditional Specification.
13. Cleavage sphere known as---------------------Blastula
14. After fertilizationthe developmental process procedd by--------------Cleavage
15. The division of embryo into 3--------------Germ Layers
16. Mathematical modeling seeks to desire developmental phenomenon in term of - ----Equations.
17. … is the study of the birth defect. -----------Teratology
18. Cell potency … fate ------------------- ≥
19. Syncytial specification found in ........... Insects
20. Germ layers are formed as a result of ............Gastrulation
21. All multicellular organisms arise by a slow process of progress change called ....

Development

22. Animals development is the division of embryo into three layers ectoderm, mesoderm and ..... Endoderm
23. The embryo contains ... The ectoderm, the endoderm and the mesoderm -Three Germ Layers.
24. Major class of cadherin includes: --------------N-Cadherin
25. Neural folds migrate toward the midline of the embryo and fusing to form …
26. Rana pipiens usually lays around … eggs while the bullfrog, Rana catesbiana can lay as many as-------------------2500, 20,000
27. The individuals of each species, however are divided into two mating types. ---- ------Plus & Minus
28. ...… animals are those who have ectoderm and endoderm but not true mesoderm, i.e. hydra. --------Diploblastic
29. Cleavage sphere is known as: ------------Blastula
30. The fetal portion of placenta formed by: ------Chorion
31. Hammerling exchanged nuclei b/w two__ distinct species. ---Morphologically
32. When plus individuals initiate fusion by extending a fertilization tube, which contacts & fuses with a specific site on the … individual. --------------- Minus
33. The major cell adhesion molecules appear to be the: ------------ Cadherins
34. The second major group of protostomes are the: -------------- Lophotrochozoa
35. Annelids, molluscs and flatworms belong to:------------- Lophotrochozoan
36. In protostomes, mouth is formed first than: -------------Deuterostomes
37. Fertilization------------- transmits genes from parents to offspring
38. -ve and +ve mating take place in--------------- Chlaymadomonas
39. ---Is a step for gene expression regulation:---Differential Gene Transcription
40. Coding regions of DNA:------Exons
41. How many domains are present for transcription:----3
42. pdx1 is present in:--------------Pancreatic And Duodenal Homeobox 1 Gene
43. Plays a major role in eye formation.-------------Pax6
44. ---------- and scleraxis are the transcription factors are thought to activate cartilagespecific genes.-------Pax1
45. The human β-globin gene has an enhancer in its 3′ UTR, roughly base pairs--700
46. The SOX9 gene, … a DNA binding protein------Encodes
47. MITF is necessary for the production of------------Pigment Cells
48. Promoter is … which is thought to regulate transcription.---------Enhancer
49. The negative enhancers are called:-----------Silencers
50. TAFs used in--------------Transcription Factor Activity
51. Allows the mRNA to exit the nucleus:-----Poly (A) Tail
52. Red blood cells make:--------------Globin
53. Enhancers are: --------------DNA Sequences
54. A region that is not translated in proteins:---------Untranslated Region (UTR)
55. RNA polymerase binds with … in start transcription--------------- Promoter
56. Regulation of gene expression accomplished by:---Selective Mrna Translation

57. MITF protein---Is Necessary For The Production Of Pigment Cells And Their Pigments

58. RNA polymerase bind with -----in start of transcription--------------Promotor
59. Sea urchin contain … mRNA.--------------25,000 To 50,000
60. In many species, sperm are attracted toward eggs by----------------Chemotaxis
61. Number of cortical granules in sea urchin: -------------15,000
62. One chemotactic molecule, a 14-amino acid peptide called:-----------Resact
63. Force for sperm propulsion is provided by--------Dynein
64. The volume of the sea urchin is about … pico liters.-------------200
65. The egg jelly factors that initiate the acrosomal reaction in … are often highly
66. Contact & … b/w sperm and egg:---------------Recognition
67. The early embryonic cells need a supply of energy and amino acid which is
68. The mammalian egg is surrounded by layer called:--------Cumulus
69. The sperm travel by the amoeboid motion of … of the cell membrane------

Lamellipodial Extensions

70. In 1824…claimed that sperm were not parasites.-----J.L. Prevost & J.B. Dumas
71. Sperms discovered in--------------1678
72. Egg shell formed … weight of egg -------9 To 12%
73. ____constitute the head of the sperm.-------------Acrosome & Nucleus