Contact-Dependent Signaling Overview
6 Questions
100 Views

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to Lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

What is contact-dependent signaling?

  • Cells communicate without physical contact.
  • Only one cell is involved.
  • It involves signaling molecules released into the bloodstream.
  • Cells must be touching with receptor and signal. (correct)

What is the first step in retina formation?

Unspecified epithelial cells race to make differentiating molecules first

What happens in the second step of retina formation?

The 'winner' expresses signaling molecule Delta on its surface and neighboring cells have NOTCH.

What is the third step in retina formation?

<p>DELTA binds the receptor NOTCH on all neighboring cells.</p> Signup and view all the answers

What does the fourth step in retina formation trigger?

<p>It triggers a signaling pathway in neighboring cells that prevents them from picking the same fate.</p> Signup and view all the answers

What is lateral inhibition?

<p>Preventing neighbors from sharing the same fate. (D)</p> Signup and view all the answers

Study Notes

Contact-Dependent Signaling

  • Requires direct cell-to-cell contact for communication through receptors and signaling molecules.
  • Example analogy: Determining roles in a band, such as who becomes the lead singer versus backup singers.

Steps in Retina Formation

  • First Step: Unspecified epithelial cells compete to produce differentiating molecules, initiating retina development.
  • Second Step: The "winning" cell expresses the signaling molecule Delta on its surface; surrounding cells possess NOTCH receptors.
  • Third Step: Delta from the winning cell binds to NOTCH on neighboring cells, facilitating direct communication; both Delta and NOTCH are membrane-bound proteins.
  • Fourth Step: This interaction activates signaling pathways in neighboring cells, preventing them from adopting the same developmental fate.

Lateral Inhibition

  • A process where a cell’s fate influences adjacent cells, inhibiting them from following the same developmental pathway.

Studying That Suits You

Use AI to generate personalized quizzes and flashcards to suit your learning preferences.

Quiz Team

Description

Explore the mechanisms of contact-dependent signaling in cellular communication. This quiz covers key concepts such as the steps involved in retina formation and the role of specific signaling molecules. Perfect for students and enthusiasts of cellular biology.

More Like This

Cellular Communication Mechanisms Quiz
30 questions
Modes of Cell Signaling in Osteoclasts
38 questions
Rol del Asesor de Contact Center en Xcaret
5 questions
Use Quizgecko on...
Browser
Browser