Suppose that frog embryos were genetically manipulated so that the epidermal cells expressed both E-cadherin and N-cadherin on their cell surface
The neuronal tissue and
epidermal tissues were collected from the embryos and treated as illustrated in Figure
10.15b. Which of the following would you predict would happen now that N-cadherin is also
present on the surface of the epidermal cells?
A. The modified epidermal cells would adhere
to each other and to neuronal cells.
B. The genetically modified epidermal cells
would adhere to neuronal cells and would no
longer adhere to epidermal cells.
C. The epidermal cells would adhere to each
other, and not to the neuronal cells, because
they would still be epidermal cells regardless
of the presence of an additional cell adhesion
protein on their surface.
A
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sizes. You correctly conclude that this organism is a(n)
a. kinetoplastid. b. plasmodial slime mold. c. ciliate. d. foraminiferan. e. ameobozoan.
_______ allow the body to remain immune to a pathogen that the immune system has encountered in the past.
a. Cytotoxic T cells b. Dendritic cells c. Antigen-presenting cells d. Memory B cells
The relationship between strands of RNA and DNA during transcription is ______________.
A. antagonistic B. opposite C. complementary D. an exact duplicate E. unrelated
Baja California is a relatively dry Mexican state but has begun to desalinate seawater for the eastern and driest part of the state. If you were one of the managers of an irrigation project using this water, what measures would you adopt?
What will be an ideal response?