DB Chapter 4: Formation of complex multicellular organisms at Hochschule Bonn-Rhein-Sieg

Flashcards and summaries for DB Chapter 4: Formation of complex multicellular organisms at the Hochschule Bonn-Rhein-Sieg

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Study with flashcards and summaries for the course DB Chapter 4: Formation of complex multicellular organisms at the Hochschule Bonn-Rhein-Sieg

Exemplary flashcards for DB Chapter 4: Formation of complex multicellular organisms at the Hochschule Bonn-Rhein-Sieg on StudySmarter:

The affinities of cells to each other ___________.

Exemplary flashcards for DB Chapter 4: Formation of complex multicellular organisms at the Hochschule Bonn-Rhein-Sieg on StudySmarter:

How does cell adhesion occur?

Exemplary flashcards for DB Chapter 4: Formation of complex multicellular organisms at the Hochschule Bonn-Rhein-Sieg on StudySmarter:

Give an example for selective affinity of cells!

Exemplary flashcards for DB Chapter 4: Formation of complex multicellular organisms at the Hochschule Bonn-Rhein-Sieg on StudySmarter:

The mesoderm has positive affinities to _________.

Exemplary flashcards for DB Chapter 4: Formation of complex multicellular organisms at the Hochschule Bonn-Rhein-Sieg on StudySmarter:

Two cell types, A and B, are mixed:


If the strength of A-B connections is greater than the strength of A-A and B-B- connections, ____________

Exemplary flashcards for DB Chapter 4: Formation of complex multicellular organisms at the Hochschule Bonn-Rhein-Sieg on StudySmarter:

Two cell types, A and B, are mixed:


If the strength of A-B is lower than the strength of A-A and B-B connections, ____________

Exemplary flashcards for DB Chapter 4: Formation of complex multicellular organisms at the Hochschule Bonn-Rhein-Sieg on StudySmarter:

Two cell types, A and B, are mixed:


If the strength of A-A connections is greater than the strength of B-B connections, __________

Exemplary flashcards for DB Chapter 4: Formation of complex multicellular organisms at the Hochschule Bonn-Rhein-Sieg on StudySmarter:

During developmental processes, the strength of cell adhesion must be changed

Exemplary flashcards for DB Chapter 4: Formation of complex multicellular organisms at the Hochschule Bonn-Rhein-Sieg on StudySmarter:

The strength of cell adhesion strongly depends on the expression of ___________.

Exemplary flashcards for DB Chapter 4: Formation of complex multicellular organisms at the Hochschule Bonn-Rhein-Sieg on StudySmarter:

What are cadherins? Where and by what are they anchored?

Exemplary flashcards for DB Chapter 4: Formation of complex multicellular organisms at the Hochschule Bonn-Rhein-Sieg on StudySmarter:

Define "cell adhesion"!

Exemplary flashcards for DB Chapter 4: Formation of complex multicellular organisms at the Hochschule Bonn-Rhein-Sieg on StudySmarter:

Cadherins are anchored inside the cells by catenins. What are catenins bound to?

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Exemplary flashcards for DB Chapter 4: Formation of complex multicellular organisms at the Hochschule Bonn-Rhein-Sieg on StudySmarter:

DB Chapter 4: Formation of complex multicellular organisms

The affinities of cells to each other ___________.

can be different. 

DB Chapter 4: Formation of complex multicellular organisms

How does cell adhesion occur?

It occurs from the interactions between cell adhesion molecules (CAM) and transmembrane proteins located on the cell surface. 

DB Chapter 4: Formation of complex multicellular organisms

Give an example for selective affinity of cells!

The inner surface of the ectoderm has a positive affinity for mesodermal cells and a negative affinity for endodermal cells.

DB Chapter 4: Formation of complex multicellular organisms

The mesoderm has positive affinities to _________.

both ectoderm and endoderm.

DB Chapter 4: Formation of complex multicellular organisms

Two cell types, A and B, are mixed:


If the strength of A-B connections is greater than the strength of A-A and B-B- connections, ____________

the aggregate will remain mixed.

DB Chapter 4: Formation of complex multicellular organisms

Two cell types, A and B, are mixed:


If the strength of A-B is lower than the strength of A-A and B-B connections, ____________

A and B cells will form separate aggregates.

DB Chapter 4: Formation of complex multicellular organisms

Two cell types, A and B, are mixed:


If the strength of A-A connections is greater than the strength of B-B connections, __________

The A cells will become central.

DB Chapter 4: Formation of complex multicellular organisms

During developmental processes, the strength of cell adhesion must be changed

Right. 

DB Chapter 4: Formation of complex multicellular organisms

The strength of cell adhesion strongly depends on the expression of ___________.

collagenase

DB Chapter 4: Formation of complex multicellular organisms

What are cadherins? Where and by what are they anchored?

Cadherins (calcium dependent adhesion molecules) are transmembrane proteins that interact with cadherins on adjacent cells. 


They are anchored inside the cells by catenins (anchoring proteins).


They are bound to actin filaments of the cytoskeleton.

DB Chapter 4: Formation of complex multicellular organisms

Define "cell adhesion"!

The process by which cells interact and attach to neighboring cells through specialized molecules of the cell surface

DB Chapter 4: Formation of complex multicellular organisms

Cadherins are anchored inside the cells by catenins. What are catenins bound to?

They are bound to actin filaments of the cytoskeleton.

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