BIO 351 - EXAM #2 - Clicker questions ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
exam with correct answers ||\\||\\ ||\\||\\ ||\\||\\
The primitive streak plays a key role in gastrulation.
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Where is the primitive streak located in the 24 hr old chick ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
embryo below? - correct answers✔✔Lowest and towards
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
the bottom.
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Which of the following cell types is formed from epiblast ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
cells that migrate through the primitive streak?
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a) ectoderm ||\\||\\
b) primary hypoblast
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c) mesoderm - correct answers✔✔c) mesoderm - the
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mesoderm forms from the epiblast cells migrating ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
through the primitive streak. ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
Remember that the definitive endoderm also forms from ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
migration through the primitive streak. ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
, All the cells of the embryo proper (all the cells in your
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
body now) derive from which of the following cells? ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
a) hypoblast ||\\||\\
b) trophoblast ||\\||\\
c) epiblast - correct answers✔✔c) epiblast
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Which of the following is the epiblast? - correct ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
answers✔✔Between the 2 middle layers, it is the top one. ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
Hypoblast is directly under it.
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Which of the following is the anterior visceral endoderm? ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
- correct answers✔✔Large red portion on the outside of
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
the middle towards the left. ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
In the mammalian embryo, which structure is essential to
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
set up the anterior-posterior axis? ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
a) Anterior visceral endoderm
||\\||\\ ||\\||\\ ||\\||\\
b) Inner cell mass ||\\||\\ ||\\||\\ ||\\||\\
c) Node ||\\||\\
exam with correct answers ||\\||\\ ||\\||\\ ||\\||\\
The primitive streak plays a key role in gastrulation.
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
Where is the primitive streak located in the 24 hr old chick ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
embryo below? - correct answers✔✔Lowest and towards
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
the bottom.
||\\||\\ ||\\||\\
Which of the following cell types is formed from epiblast ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
cells that migrate through the primitive streak?
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
a) ectoderm ||\\||\\
b) primary hypoblast
||\\||\\ ||\\||\\
c) mesoderm - correct answers✔✔c) mesoderm - the
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
mesoderm forms from the epiblast cells migrating ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
through the primitive streak. ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
Remember that the definitive endoderm also forms from ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
migration through the primitive streak. ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
, All the cells of the embryo proper (all the cells in your
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
body now) derive from which of the following cells? ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
a) hypoblast ||\\||\\
b) trophoblast ||\\||\\
c) epiblast - correct answers✔✔c) epiblast
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
Which of the following is the epiblast? - correct ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
answers✔✔Between the 2 middle layers, it is the top one. ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
Hypoblast is directly under it.
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
Which of the following is the anterior visceral endoderm? ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
- correct answers✔✔Large red portion on the outside of
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
the middle towards the left. ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
In the mammalian embryo, which structure is essential to
||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
set up the anterior-posterior axis? ||\\||\\ ||\\||\\ ||\\||\\ ||\\||\\
a) Anterior visceral endoderm
||\\||\\ ||\\||\\ ||\\||\\
b) Inner cell mass ||\\||\\ ||\\||\\ ||\\||\\
c) Node ||\\||\\
