Signal Transduction

What is the signaling molecule & where does it bind?​

• Ligand; Enzyme​

• Ligand; Receptor​

• Substrate; Enzyme​

• Substrate; Receptor​

All cells respond to the same ligand with the same response.​

• True

• False

Which number represents the stimulus?

• 1

• 2

• 3

• 4

What is the function of receptors

• respond to the stimulus

• learning by repetition

• learned by being tricked

• keep a balance between internal/external

Tags

NGSS.HS-LS1-3

During transduction a protein kinase changes confirmation (shape) when

• It is phosporylated

• before the ligand binds

• phosphorylase enzyme activates it

• during reception

Signal transductions pathways have multiple step which allows for

• less ATP to be used

• amplification

• a longer response

• different responses at once

A mutation in the receptor protein will

• change the cells ability to respond to the signal

• allow for a different cellular response

• cause multiple cellular responses

• make no change for the cell

What is the signaling molecule called?

• Repressor

• Activator

• ligand

• enhancer

Calcium (Ca+) is released from the ER which allows for muscular contractions. What receptor mechanism is used to release the Ca+?

• Simple diffusion

• active transport

• gated ion channel

• ion channel

This receptor leads to a change in the distribution of ion

• Receptor tyrosine kinase

• G protein-coupled receptors

• intracellular receptors

• ligand-gated ion channels