Answered: Which of the following is NOT a…

Human Anatomy & Physiology (11th Edition)

11th Edition

ISBN:9780134580999

Author:Elaine N. Marieb, Katja N. Hoehn

Publisher:Elaine N. Marieb, Katja N. Hoehn

Chapter1: The Human Body: An Orientation

Section: Chapter Questions

Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...

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1. Which of the following is NOT a characteristic of avian axis formation?*
a. The anterposterior axis is established by a nodal cascade.
b. The epiblast surface facing a basic environment becomes the dorsal surface.
c. The epiblast surface facing a negative environment becomes the dorsal surface.
d. The antero-posterior axis is established when the ovum rotates in the shell gland

2.Which of the following proteins is NOT required in the dorsalization of the vertebrate neural tube?*

a. chordin

b.follistatin

c. noggin

d. retinin

3. An induced pluripotent cell is described by which of the following?*

a. It is a committed cell that undergoes redifferentiation.

b. It is a committed cell that undergoes dedifferentiation.

c. It is a terminally differentiated cell that undergoes redifferentiaton.

d. It is a terminally differentiated cell that undergoes dedifferentiation.

4. Which of the following statements about the VegT-nodal morphogen gradient is NOT correct?*

a. Cells not exposed to nodal adopt an ectodermal fate.

b. Cells exposed to high amounts of nodal become endodermal cells.

c. Cells exposed to minimal amounts of nodal become marginal cells.

d. Cells exposed to moderate amounts of nodal become mesodermal cells.

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