2478024
Pregunta 1
Pregunta
By the oogenesis 4 mature oocytes occur from one oogonia.
Respuesta
- True
- False
Pregunta 2
Pregunta
Oogenesis is fully completed after the fertilization of the secondary oocyte.
Respuesta
- True
- False
Pregunta 3
Pregunta
By the spermatogenesis 1 mature spermatozoon occurs from on spermatogonia
Respuesta
- True
- False
Pregunta 4
Pregunta
The axis (axonema) of the spermatozoon flagellum is built of microtubules following the 9x3+0 formula.
Respuesta
- True
- False
Pregunta 5
Pregunta
The human spermatozoon head looks like "flame of candle" in shape.
Respuesta
- True
- False
Pregunta 6
Pregunta
The mitochondria are arranged in spiral fashion around the middle piece of the spermatozoon flagellum
Respuesta
- True
- False
Pregunta 7
Pregunta
The spermatogenesis starts during the
Respuesta
-
Embryonic period
-
Fetal period
-
Right after the birth
-
Puberty
Pregunta 8
Pregunta
The spermatozoon acrosome represents:
Respuesta
-
Cistern of the smooth-surfaced endoplasmic reticulum
-
Secretory granule
-
Cistern of the Golgi complex (zone)
-
Lysosome
Pregunta 9
Pregunta
The oogenesis starts during the:
Respuesta
-
Embryonic period
-
Fetal period
-
Right after the birth
-
Puberty
Pregunta 10
Pregunta
The marker enzyme of the human spermatozoon acrosome is:
Respuesta
-
Hyaluronidase
-
Alkaline phosphatase
-
Acid phosphatase
-
Lipase
Pregunta 11
Pregunta
Which of the following organelles is not present in the ovum (mature oocyte):
Respuesta
-
Golgi apparatus
-
Mitochondria
-
Cenrtioles (cytocentre)
-
Lysosomes
Pregunta 12
Pregunta
Body of Balbiani (corpus Balbiani) is present in the:
Respuesta
-
Oogonia
-
Spermatogonia
-
Primary oocyte
-
Primary spermatocyte
Pregunta 13
Pregunta
The human spermatogenetic cycle occupys about:
Respuesta
-
22 days
-
72 days
-
52 days
-
10 days
Pregunta 14
Pregunta
The diameter of the human ovum is:
Respuesta
-
5 µm
-
120 µm
-
20 µm
-
220 µm
Pregunta 15
Pregunta
The spermatozoon length is:
Respuesta
-
60 µm
-
10 µm
-
5 µm
-
30 µm
Pregunta 16
Pregunta
The oogenesis is completed:
Respuesta
-
Before the fertilization
-
Before the fertilization
-
After the puberty
-
After the fertilization
Pregunta 17
Pregunta
Which of the following are specific for the acrosome:
Respuesta
-
Membrane organelle
-
Derived from the Golgi complex (zone)
-
Biochemical analogous to the lysosomes
-
Contains glocogen
-
Is built in the primary oocyte
Pregunta 18
Pregunta
Which of the following are specific for the spermatogenesis:
Respuesta
-
Starts during the embryonic period
-
Starts with the onset of puberty
-
Passes through three phases
-
Passes through four phases
Pregunta 19
Pregunta
Which of the following are specific for the secondary spermatocytes:
Respuesta
-
Haploid number of chromosomes
-
The biggest in size male germ cells
-
Are formed during the second phase of spermatogenesis (phase of cell growth)
-
Are formed during the first phase of spermatogenesis (phase of cell multiplication)
Pregunta 20
Pregunta
The spermatozoon head contains:
Respuesta
-
Nucleus
-
Mitochondria
-
Centrioles
-
Acrosome
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