Cell Signaling and Transduction

A signal molecule that binds to a plasma-membrane protein is a

• ligand
• second messenger
• protein kinase
• receptor protein

The three stages of cell signalling are

• paracrine, local, and synaptic
• reception, transduction, and response
• transcription, translation, and folding
• alpha, beta, and gamma

Type of cell signaling where the ligand is produced at a location distant from its target cell(s)

• autocrine signaling

• juxtracrine signaling

• paracrine signaling

• endocrine signaling

Receptors for signal molecules __________.

• all work via protein kinases

• are never found in the nucleus of a cell

• may be found embedded in the plasma membrane, or found within the cytoplasm or nucleus

• all work by opening ion channels

• are only found associated with the plasma membrane

A cell is known to respond to a particular signaling molecule. Which of the following must be true of this cell?

• It is in the heart muscle
• it is also the site of production for the signaling molecule
• It contains the receptor for the signaling molecule
• It is incapable of signal transduction

What is Apoptosis?

• Cell programmed Death

• Inflammation of cell

• Phagocytosis

• Plasmolysis

An example of DIRECT cell communication is:

• White blood cells bumping into each other sharing antigen info

• Neurons communicating across a synapse

• Hormones traveling through the blood stream to target tissues

This is an example of

• paracrine signaling
• synaptic signaling
• long-distance signaling
• all of the above

Which letter represents the cell surface receptor protein?

• A

• B

• C

• D

• E

Which letter represents the cell membrane?

• A

• B

• C

• D

• E

Tags

NGSS.MS-LS1-2