chapter 11 cell communication. concept check questions chapter 11 cell communication

23
Chapter 11 Cell Communication

Upload: linda-maxwell

Post on 20-Jan-2016

234 views

Category:

Documents


0 download

TRANSCRIPT

Page 1: Chapter 11 Cell Communication. Concept Check Questions Chapter 11 Cell Communication

Chapter 11

Cell Communication

Page 2: Chapter 11 Cell Communication. Concept Check Questions Chapter 11 Cell Communication

Concept Check Questions 

Chapter 11

Cell Communication

Page 3: Chapter 11 Cell Communication. Concept Check Questions Chapter 11 Cell Communication

Explain how nerve cells provide examples of both local and long-distance signaling. 

Chapter 11

Cell Communication

Page 4: Chapter 11 Cell Communication. Concept Check Questions Chapter 11 Cell Communication

Explain how nerve cells provide examples of both local and long-distance signaling.

Synapse = localElectrical = long distance

 

Chapter 11

Cell Communication

Page 5: Chapter 11 Cell Communication. Concept Check Questions Chapter 11 Cell Communication

Nerve growth factor (NGF) is a water-soluble signal molecule. Would you expect the receptor for NGF to be intracellular or in the plasma membrane?

Why?

Chapter 11

Cell Communication

Page 6: Chapter 11 Cell Communication. Concept Check Questions Chapter 11 Cell Communication

Nerve growth factor (NGF) is a water-soluble signal molecule. Would you expect the receptor for NGF to be intracellular or in the plasma membrane?

Why? Hydrophylic

Chapter 11

Cell Communication

Page 7: Chapter 11 Cell Communication. Concept Check Questions Chapter 11 Cell Communication

What is a protein kinase, and what is its role in a signal transduction pathway?

Chapter 11

Cell Communication

Page 8: Chapter 11 Cell Communication. Concept Check Questions Chapter 11 Cell Communication

What is a protein kinase, and what is its role in a signal transduction pathway?

A protein that phosphorylates another protein, often in a cascade.

Chapter 11

Cell Communication

Page 9: Chapter 11 Cell Communication. Concept Check Questions Chapter 11 Cell Communication

When a signal transduction pathway involves a phosphorylation cascade, how does the cell’s response get turned off?

Chapter 11

Cell Communication

Page 10: Chapter 11 Cell Communication. Concept Check Questions Chapter 11 Cell Communication

Protein kinase = onProtein phosphatase = off

Chapter 11

Cell Communication

Page 11: Chapter 11 Cell Communication. Concept Check Questions Chapter 11 Cell Communication

Upon activation of phospholipase C by ligand binding to a receptor, what effect does the IP3-gated calcium channel have on Ca2+ concentration in the cytosol?

Chapter 11

Cell Communication

Page 12: Chapter 11 Cell Communication. Concept Check Questions Chapter 11 Cell Communication

Gate opens.Ca++ flows out of ER.

[Ca++] goes up.

Chapter 11

Cell Communication

Page 13: Chapter 11 Cell Communication. Concept Check Questions Chapter 11 Cell Communication

How can a target cell’s response to a hormone be amplified more than a millionfold?

Chapter 11

Cell Communication

Page 14: Chapter 11 Cell Communication. Concept Check Questions Chapter 11 Cell Communication

How can a target cell’s response to a hormone be amplified more than a millionfold?

cascade

Chapter 11

Cell Communication

Page 15: Chapter 11 Cell Communication. Concept Check Questions Chapter 11 Cell Communication

How can a target cell’s response to a hormone be amplified more than a millionfold?

cascade

Chapter 11

Cell Communication

Page 16: Chapter 11 Cell Communication. Concept Check Questions Chapter 11 Cell Communication

How can a target cell’s response to a hormone be amplified more than a millionfold?

cascade

Chapter 11

Cell Communication

Page 17: Chapter 11 Cell Communication. Concept Check Questions Chapter 11 Cell Communication

How can a target cell’s response to a hormone be amplified more than a millionfold?

cascade

Chapter 11

Cell Communication

Page 18: Chapter 11 Cell Communication. Concept Check Questions Chapter 11 Cell Communication

How can a target cell’s response to a hormone be amplified more than a millionfold?

cascade

Chapter 11

Cell Communication

Page 19: Chapter 11 Cell Communication. Concept Check Questions Chapter 11 Cell Communication

Explain how two cells with different scaffolding proteins could behave differently in response to the same signaling molecule.

Chapter 11

Cell Communication

Page 20: Chapter 11 Cell Communication. Concept Check Questions Chapter 11 Cell Communication

Chapter 11

Cell Communication

Page 21: Chapter 11 Cell Communication. Concept Check Questions Chapter 11 Cell Communication

Chapter 11

Cell Communication

Page 22: Chapter 11 Cell Communication. Concept Check Questions Chapter 11 Cell Communication

Chapter 11

Cell Communication

Page 23: Chapter 11 Cell Communication. Concept Check Questions Chapter 11 Cell Communication

Chapter 11

Cell Communication