Cellular Communication

The 3 steps of signal transduction in order are

• reception, transduction, response

• response, transduction, reception

• reception, response, transduction

• transduction, reception, response

This is an example of

• paracrine signaling

• synaptic signaling

• long-distance signaling

• all of the above

Ligands are signaling molecules that bind to receptors. Which of the following statements is true of ligands?

• All ligands are proteins.

• Each ligand is only able to bind to one specific receptor

• Ligands can bind to cell-surface receptors, but they cannot enter the cell

• Ligands bond to receptor proteins and cause the protein to relay a message to intracellular proteins.

Which letter represents the cell surface receptor protein?

• A

• B

• C

• D

• E

To respond to a signal, a cell must have a(n) ______________ molecule that can detect the signal.

• paracrine

• receptor

• autocrine

• responder

This is an example of

• paracrine signalling

• endocrine signalling

• autocrine signalling

• juxtacrine signalling

Each of the following numbered processes are involved in signal transduction pathways:  
 I.  Response  
II.  Amplification  
 III.  Reception  
IV.  Transduction
Which of the following represents the sequence of events in a typical signal transduction pathway?

• I, II, III, IV

• III, I, IV, II

• II, IV, I, III

• III, IV, II, I

What is being depicted in the image?

• Amplification of the signal molecule

• Enzymatic proteins inhibiting process of the signal transduction pathway

• Kinase groups adding dimer groups to other enzymes

• Diffusion of molecules within the cell due to the signaling molecule

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

An example of endocrine 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

Tags

NGSS.HS-LS1-3