Gametes and Gametogenesis
1. The term meiosis means
a. Diminution
b. Sequestering
c. Recombine
d. Mixing
2. The number of nuclear divisions in meiosis is
a. 1
b. 2
c. 3
d. 4
3. The chromosomes in a gamete are
a. Either maternal or paternal
b. Only paternal
c. Both maternal and paternal
d. Only maternal
4. Development of egg without fertilization is called
a. Regeneration
b. Embryogenesis
c. Parthenogenesis
d. Activation and proliferation
5. An egg is
a. Pluripotent
b. Multipotent
c. Totipotent
d. Bipotent
6. The diameter of a human egg is
a. 10 microns
b. 100 microns
c. 300 microns
d. 400 microns
7. Egg yolk does not contain
a. Lipids
b. Proteins
c. Polysaccharides
d. Monosaccharides
8. The egg coat is a specialized
a. Plasma membrane
b. Cell wall
c. Extracellular matrix
d. Protein fibers
9. The egg coat predominantly is made of
a. Lipids
b. Glycoproteins
c. Polysaccharides
d. Monosaccharides
10. The layer immediately surrounding the plasma membrane of mammalian eggs is
a. Zona pellucida
b. Vitelline layer
c. Cell wall
d. Periplasm
11. The layer immediately surrounding the plasma membrane of non-mammalian
eggs is
a. Zona pellucida
b. Vitelline layer
c. Cell wall
d. Periplasm
12. Typically, additional layers that surround the vitelline layer is seen in the eggs of
a. Vertebrates
b. Invertebrates
c. Non-mammals
d. Mammals
13. Typically, the tough chorion layer above the vitelline layer is seen in the eggs of
a. Vertebrates
b. Mammals
c. Insects
d. Birds
14. The layer containing specialized secretory vesicles of the eggs is located
a. Just below the plasma membrane
b. On the nuclear membrane
c. Inside the cytoplasm
d. Around the cell organelles
15. The layer of the eggs that contain specialized secretory vesicles is called
a. Medulla
b. Cortex
c. Paracortex
d. Zona pellucid
16. An egg that is developing is called
a. Oocyte
b. Ovum
c. Gamete
d. Haploid
17. An egg that is fully developed and mature is called
a. Oocyte
b. Ovum
c. Oogonium
d. Haploid
18. The cell cycle stage where the developing oocytes are arrested for growth is
the
a. Prophase I
b. Prophase II
c. Anaphase I
d. Anaphase II
19. The cell cycle stage where many developing oocytes are arrested before fertilization is
a. Prophase I
b. Prophase II
c. Metaphase I
d. Metaphase II
20. The first meiotic division occurs in the
a. Oocytes
b. Oogonia
c. Primary oocytes
d. Secondary oocytes
21. The 1st meiotic division results in
a. Polar body and secondary oocyte
b. Polar body and primary oocyte
c. Polar body and oocyte
d. Two secondary oocytes
22. The egg precursor during oogenesis is
a. Primary oocyte
b. Secondary oocyte
c. 1st polar body
d. 2nd polar body
23. The cells that nourish developing oocytes are called
a. Follicle cells
b. Oogonial cells
c. Kupfer cells
d. Polar cells
24. An oocyte is stimulated to complete the meiosis process by
a. Ovulation
b. Fertilization
c. Polar body formation
d. Division
25. The proteins that are associated with the DNA of spermatozoa are called
a. Histone
b. Non-histones
c. Protamines
d. Amines
26. The hydrolytic enzymes of spermatozoa are located at
a. Neck region
b. Head region
c. Flagellum region
d. Acrosomal vesicle
27. The central part of the spermatozoa flagellum is called
a. Axon
b. Axoneme
c. Acroneme
d. Acrosome
28. The number of central singlet microtubules in the spermatozoa flagellum is
a. 1
b. 2
c. 3
d. 4
29. The number of microtubule doublets that surround the central microtubules in
the spermatozoa flagellum is
a. 3
b. 6
c. 9
d. 12
30. The microtubules organization pattern in the axoneme of spermatozoa is
a. 9 + 2
b. 3 + 9
c. 6 + 3
d. 3 + 6
31. The motor proteins that are responsible for the movement of the spermatozoa
flagellum are
a. Actin
b. Myosin
c. Dynein
d. Fibrin
32. Immature germ cells that produce spermatozoa are
a. Spermatogonia
b. Primary spermatocyte
c. Secondary spermatocyte
d. Spermatids
33. The maturation of spermatids occur at
a. Seminiferous tubule lining
b. Seminiferous tubule lumen
c. Epididymis
d. Urethra
34. The cells that help in the development of spermatogonia are
a. Sertoli cells
b. Folicular cells
c. Nurse cells
d. Leydig cells
35. The cells that secrete testosterone that is required for spermatogenesis are
a. Sertoli cells
b. Folicular cells
c. Nurse cells
d. Leydig cells
36. The sertoli cells are located at
a. Seminiferous tubule lining
b. Inside the seminiferous tubule
c. Outside the basal lamina of the seminiferous tubules
d. Epididymis
37. The leydig cells are located at
a. Seminiferous tubule lining
b. Inside the seminiferous tubule
c. Between the seminiferous tubules
d. Epididymis
38. The spermatogonia that are dividing are located at
a. Seminiferous tubule lining
b. Inside the seminiferous tubule
c. Lining of the basal lamina in the seminiferous tubules
d. Epididymis
39. The cytoplasmic bridges during spermatogenesis last till the formation of
a. Mature spermatozoa
b. Spermatids
c. Primary spermatocytes
d. Secondary spermatocytes
40. Oogenesis of one oogonium results in
a. 1 ovum
b. 2 ova
c. 3 ova
d. 4 ova
41. Spermatogenesis of one primary spermatocyte results in
a. 2 spermatozoa
b. 4 spermatozoa
c. 8 spermatozoa
d. 10 spermatozoa
42. The miniature organism in the gametes according to the preformation theory
of life form development is called
a. Embryo
b. Fetus
c. Homunculus
d. Nucleus
43. The theory that supported progressive developmental changes should occur
for the formation of an individual is called
a. Preformation theory
b. Epigenetic theory
c. Biogenetic theory
d. Recaptulation theory
44. The germ layer theory explaining the development of individuals is explained by
a. Baer’s law
b. Epigenetic theory
c. Biogenetic theory
d. Recaptulation theory
45. The occurrence of the phylogenetic resemblances during an organism’s
embryonic development is explained by
a. Preformation theory
b. Epigenetic theory
c. Biogenetic theory
d. Recaptulation theory
46. Animals are
a. Heterogametic
b. Homogametic
c. Isogametic
d. None of the above
47. The process of male gamete formation is called
a. Spermiogenesis
b. Spermatogenesis
c. Neogenesis
d. Gametogenesis
48. The life forms that can produce sperm and ova in different individuals are called
a. Dioecious
b. Monoecious
c. Hermophroditic
d. Parthenogenetic
49. The life forms that can produce sperm and ova in the same individuals are
called
a. Dioecious
b. Monoecious
c. Regenerative
d. Parthenogenetic
50. The monoecious life forms are also known as
a. Dioecious
b. Regenerative
c. Hermophroditic
d. Parthenogenetic
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