Biosignaling

Question 1

What is the role of the membrane receptor?

Answer 1

To aid communication between a cell and its environment

Question 2

A membrane receptor aids in the cellular response to the

Answer 2

External environment

Question 3

What is a ligand?

Answer 3

A molecule that attaches to a receptor, triggering changes within the cell

Question 4

Medications typically act as

Answer 4

Ligands for receptors

Question 5

In which type of cell are ligand-gated ion channels most commonly found?

Answer 5

Cells that need to respond quickly to external stimuli

Question 6

Cells that respond to mechanic forces typically possess

Answer 6

Stretch-activated ion channels

Question 7

What is an example of a cell that displays xtretch-activated ion channels due to mechanic forces?

Answer 7

Cardiac cells

Question 8

Terminally differentiated cells are comprised of

Answer 8

Multiple cell types

Question 9

The ligand-gated ion channel allows for

Answer 9

A rapid response to a stimulus

Question 10

Allosteric binding is an important feature of

Answer 10

Ligand-gated ion channels

Question 11

Which receptors respond to deformations in the cell membrane?

Answer 11

Stretch receptors

Question 12

How do ligand-gated ion channels react?

Answer 12

Quickly

Question 13

Adenylate cyclase is an enzyme that is activated when

Answer 13

GTP interacts with it

Question 14

What do receptor tyrosine kinases initiate?

Answer 14

Intracellular signaling cascades

Question 15

Once phosphorylated, the intracellular segment of a receptor tyrosine kinase

Answer 15

Allows docking of intracellular proteins involved in signal transduction

Question 16

Where can receptor tyrosine kinases be found?

Answer 16

In many types of tissues

Question 17

Receptor tyrosine kinases are typically associated with

Answer 17

Growth factors