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| 1 |
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Q:
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The stage of cell division that occurs without increase in cell size after division is called |
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A
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Cleavage |
B
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Blastulation |
C
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Gastrulation |
D
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Fertilization |
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Tags:
Embryonic Development | |
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| 2 |
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Q:
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Which of the following does NOT arise from ectoderm? |
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A
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epidermis |
B
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nervous system |
C
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muscoloskeletal tissues |
D
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eyes |
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Tags:
Embryonic Development | |
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| 3 |
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Q:
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The nephron develops from the same germ cell layer as does the: |
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A
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brain |
B
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lining of the digestive tract |
C
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retina |
D
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heart |
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Tags:
Embryonic Development | |
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| 4 |
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Q:
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Gastrulation is followed directly by: |
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A
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nerulation |
B
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fertilization |
C
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morulation |
D
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morphogenesis |
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Tags:
Embryonic Development | |
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| 5 |
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Q:
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The lining of the digestive tract, the lungs, the liver, and the pancreas are formed from which germ layer? |
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A
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ectoderm |
B
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mesoderm |
C
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endoderm |
D
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gastroderm |
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Tags:
Embryonic Development | |
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| 6 |
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Q:
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The invagination of the neural plate produces: |
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A
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the notochord |
B
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the cerebellum |
C
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the neural tube |
D
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the spine |
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Tags:
Embryonic Development | |
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| 7 |
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Q:
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In humans, the fusion of the nuclei of two functional
gametes results in the formation of a
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A
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monoploid cell |
B
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zygote |
C
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cotyledon |
D
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polyploid cell |
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Tags:
Embryonic Development | |
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| 8 |
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Q:
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Which germ layer is the spinal cord derived from? |
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A
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Mesoderm |
B
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Ectoderm |
C
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Endoderm |
D
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None of the above |
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Tags:
Embryonic Development | |
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| 9 |
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Q:
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Which of the following germ layers gives rise to the spinal cord? |
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A
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Ectoderm |
B
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Mesoderm |
C
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Endoderm |
D
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Intraderm |
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Tags:
Embryonic Development | |
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| 11 |
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Q:
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The skin, hair, nails, eyes and central nervous system arise from which germ layer? |
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A
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endoderm |
B
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ectoderm |
C
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mesoderm |
D
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transderm |
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Tags:
Embryonic Development | |
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| 12 |
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Q:
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Many embryos experience an ectodermal abnormality caused by the BC5X mutation. Which of the following would not be an expected consequence? |
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A
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Peripheral nervous deficits |
B
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Changes in skin |
C
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Blindness |
D
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Generalized muscle weakness |
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Tags:
Embryonic Development | |
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| 13 |
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Q:
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Meiosis II occurs for the production of sex cells (sperm and eggs). For the egg, meiosis II actually occurs after the egg is fertilized by a sperm. Which of the following would not be expected to be found within the egg cell membrane after this meiosis process takes place? |
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A
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Sperm DNA |
B
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Two polar bodies |
C
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Enzymes from the sperm |
D
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The zona pellucida |
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Tags:
Mitosis and Meiosis | Embryonic Development | |
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| 14 |
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Q:
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Fetal hemoglobin differs from maternal hemoglobin in that it |
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A
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Has a right-shifted oxygen saturation curve |
B
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Has increased affinity for iron |
C
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Has a left-shifted oxygen saturation curve |
D
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Has an increased half-life |
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Tags:
Embryonic Development | Circulatory System | |
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| 15 |
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Q:
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The notochord in the embryo is responsible for |
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A
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developing into the CNS and PNS |
B
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coordinating development of the CNS |
C
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developing only into the CNS |
D
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differentiating into endodermal structures, such as the gut |
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Tags:
Embryonic Development | |
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| 16 |
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Q:
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Unipotent stem cells are those which, like other stem cells, undergo perpetual self-renewal while remaining in their undifferentiated state, and can differentiate to produce only one specialized cell type. An example of unipotent stem cells includes: |
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A
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neurons |
B
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myeloid progenitor cell |
C
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mesodermal cell |
D
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spermatogonia |
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Tags:
Embryonic Development | |
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| 17 |
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Q:
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Which of the following tissues is not derived from endoderm? |
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A
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Liver |
B
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Pancreas |
C
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Brain |
D
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Lungs |
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Tags:
Embryonic Development | |
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| 18 |
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Q:
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Cardiac tissue is derived from which germ layer? |
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A
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Ectoderm |
B
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Mesoderm |
C
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Endoderm |
D
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Blastoderm |
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Tags:
Embryonic Development | |
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| 19 |
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Q:
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A human embryo that did not develop mesoderm during gastrulation would result in early termination of the pregnancy. The embryo would be unable to develop which of the following? |
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A
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nervous system |
B
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muscle tissue |
C
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skin |
D
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digestive tract |
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Tags:
Embryonic Development | |
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| 20 |
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Q:
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Morphogens are extracellular molecules that govern tissue development and specialization during morphogenesis. Which of the following experiments would NOT constitute support for the existence of morphogens? |
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A
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Two cells on opposite ends of the morula are switched, causing no developmental difference. |
B
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A single cell is removed from the morula, causing the embryo to suffer a significant morphological deformity. |
C
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Creating blockers for hypothesized morphogen receptors causes tissue differentiation to stop. |
D
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Selective activation of developmental genes increases in frequency as the distance from a particular location in the embryo decreases. |
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Tags:
Embryonic Development | |
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| 21 |
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Q:
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Which of the following gives rise to the skeletal system? |
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A
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Notochord |
B
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Mesoderm |
C
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Endoderm |
D
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Ectoderm |
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Tags:
Embryonic Development | |
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| 22 |
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Q:
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During human development, from which primary germ cell layers do skin and the peripheral nervous system develop? |
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A
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mesoderm only |
B
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mesoderm and ectoderm |
C
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ectoderm only |
D
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ectoderm and endoderm |
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Tags:
Embryonic Development | |
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| 23 |
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Q:
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The notochord is derived from the: |
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A
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endoderm. |
B
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ectoderm. |
C
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mesoderm. |
D
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exoderm. |
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Tags:
Embryonic Development | |
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| 24 |
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Q:
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Which of the following organs develop from the endoderm?
I. gastrointestinal tract
II. respiratory tract
III. pancreas
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A
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I only |
B
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I and II only |
C
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II only |
D
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I, II and III |
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Tags:
Embryonic Development | |
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| 25 |
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Q:
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Kidney tubules form from the: |
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A
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endoderm. |
B
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ectoderm. |
C
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mesoderm. |
D
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exoderm. |
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Tags:
Embryonic Development | |
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| 26 |
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Q:
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Which of the following refers to the innermost tissue layer in a developing embryo? |
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A
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ectoderm |
B
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endoderm |
C
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mesoderm |
D
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exoderm |
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Tags:
Embryonic Development | |
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| 27 |
Go |
Q:
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Which of the following is not true regarding the notochord? |
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A
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it is derived from the endoderm |
B
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it is distinct from the neural tube |
C
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it is important for the development of the central nervous system
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D
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vertebra embryos contain a notochord |
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Tags:
Embryonic Development | |
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