Signal Transduction Pathways

 Which is the  local signaling type that involves the cells touching?

• Endocrine

• Paracrine

• juxtacrine

• autocrine

_________ is the only long distance signaling type

A G-protein triggers _______ response(s) and a receptor tyrosine kinase can trigger_______ response(s) at once

• 0, Multiple

• Multiple, 0

• 1, Multiple

• Multiple, 1

The above model represents

• Autocrine

• Endocrine

• Paracrine

• Juxtacrine

The axon of a neuron has _______ at a resting state

• sodium ions on the outside, potassium ions on the outside

• Potassium ions on the outside, sodium ions on the inside

• Sodium on the inside, nothing on the outside

The purpose of a phosphorylation cascade is to......

• Slow down a signal

• provide food for the cell

• amplify a signal

• recieve a ligand

An intracellular receptor protein.........

• Recieves a ligand, inside a cell

• Recieves a ligand in the cell membrane

• Blocks a ligand, in the cell membrane

True or false? The phosphorylation cascade serves to enhance and amplify a signal

• True

• False

What is autocrine signaling?

• Close signaling

• touching signaling

• long distance signaling

• self signaling

what does the signal transduction pathway do?

• Convert signals on a cell’s surface into cellular responses

• Convert intracellular signals in a cell  into responses outside the cell

• A pathway on which signal transduction travels

• Helps cells