Cell signaling/Homeostasis

Question 1

Signal Transduction Pathway

Answer 1

How information is moved through the cell.

Question 2

What is an example of a Signal Transduction Pathway?

Answer 2

Immune Response.

Question 3

Pheromones

Answer 3

Carry messages between different individuals of the same species.

Question 4

Autocrine Signaling

Answer 4

A cell signals itself.

Question 5

Juxtacrine Signaling

Answer 5

Cells touch to share signal.

Question 6

Paracrine Signaling

Answer 6

Cells are near each other but don’t touch.

Question 7

Endocrine Signaling

Answer 7

Cells use bloodstream to signal other cells across long distances.

Question 8

3 Stages of a Signal Transduction Pathwayq

Answer 8

Reception, Transduction, Response

Question 9

Reception

Answer 9

Hormone binds to specific receptor protein in/on target cell.

Question 10

Transduction

Answer 10

Triggers event within target cell, converting signal from one form to another.

Question 11

Response

Answer 11

Change in cell’s behavior.

Question 12

Ligand

Answer 12

Signal that binds to a receptor.

Question 13

Homeostasis

Answer 13

The regulation of the internal environment of an organism when the external environment changes.

Question 14

Negative Feedback Loop

Answer 14

Reverse the change

Question 15

Positive Feedback Loop

Answer 15

Amplify the change

Question 16

Homeotic Genes

Answer 16

Control genes that regulate the expression of other genes that determine anatomy of the body.

Question 17

Cell Differentation

Answer 17

Cells become specialized based on signals from other cells around them.

Question 18

Phototropism

Answer 18

Bending of plants towards light.

Question 19

Apoptosis

Answer 19

Programmed cell death.