Principles In Developmental And Stem Cell Biology at Universität Heidelberg | Flashcards & Summaries

Lernmaterialien für Principles in Developmental and Stem Cell Biology an der Universität Heidelberg

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In Zebrafish, at the onset of gastrulation, the embryo covers the yolk during a process called? (one answer correct) 


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epiboly

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One of the earliest events in Arabidopsis embryogenesis is? (one answer correct) 


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formation of the apical-basal axis by auxin

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How is developmental plasticity regulated? 


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Cell division, cell fate and patterning

-> because Plant cells don’t move

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Why do plants adjust stomatal number to environmental conditions?


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balance between getting enough CO2/ releas Oxygen and not losing to much water

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Forces can be revealed or measured in tissues by which kind of experiments? (one answer correct) 


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relaxation experiments (e.g. cutting)

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A morphogen is ? (one correct answer) 


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a signalling molecule that confers concentrationdependent positional information

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What context dependent cell responses do you know?

Name an Example

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Survive

Grow and divide

Differentiate

Die


Example Acetylcholine:

  • Heart muscle cell: decreased rate and force of contraction.
  • Skeletal muscle cell: contraction
  • Salivary gland cell: secretion
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Why do plants have developmental plasticity?

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Most of the development in plants is post embryonic

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What makes a signal fast or slow?

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  1. Altered protein function: fast (sec ~ min)
  2. Altered protein synthesis (needs to go into the nucleus): slow (min ~hour)
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To which cues can roots react


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gravity

water availability 

nutrients 

salt

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Talk about the Morphogen gradient!

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Depending on gradient uncommitted cells to different committed cells

  • Responses are concentration dependent
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What else should you know about signaling pathways?


(Type of signal? Are they conserved?)
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Type of activation matters:

  1. Pulse or sustained signal changes gen expression
    • expression dependent responses to signaling


Most of the pathways are highly conserved in many organisms

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Beispielhafte Karteikarten für deinen Principles in Developmental and Stem Cell Biology Kurs an der Universität Heidelberg - von Kommilitonen auf StudySmarter erstellt!

Q:

In Zebrafish, at the onset of gastrulation, the embryo covers the yolk during a process called? (one answer correct) 


A:

epiboly

Q:

One of the earliest events in Arabidopsis embryogenesis is? (one answer correct) 


A:

formation of the apical-basal axis by auxin

Q:

How is developmental plasticity regulated? 


A:

Cell division, cell fate and patterning

-> because Plant cells don’t move

Q:

Why do plants adjust stomatal number to environmental conditions?


A:

balance between getting enough CO2/ releas Oxygen and not losing to much water

Q:

Forces can be revealed or measured in tissues by which kind of experiments? (one answer correct) 


A:

relaxation experiments (e.g. cutting)

Mehr Karteikarten anzeigen
Q:

A morphogen is ? (one correct answer) 


A:

a signalling molecule that confers concentrationdependent positional information

Q:

What context dependent cell responses do you know?

Name an Example

A:

Survive

Grow and divide

Differentiate

Die


Example Acetylcholine:

  • Heart muscle cell: decreased rate and force of contraction.
  • Skeletal muscle cell: contraction
  • Salivary gland cell: secretion
Q:

Why do plants have developmental plasticity?

A:

Most of the development in plants is post embryonic

Q:

What makes a signal fast or slow?

A:
  1. Altered protein function: fast (sec ~ min)
  2. Altered protein synthesis (needs to go into the nucleus): slow (min ~hour)
Q:

To which cues can roots react


A:

gravity

water availability 

nutrients 

salt

Q:

Talk about the Morphogen gradient!

A:

Depending on gradient uncommitted cells to different committed cells

  • Responses are concentration dependent
Q:

What else should you know about signaling pathways?


(Type of signal? Are they conserved?)
A:

Type of activation matters:

  1. Pulse or sustained signal changes gen expression
    • expression dependent responses to signaling


Most of the pathways are highly conserved in many organisms

Principles in Developmental and Stem Cell Biology

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