Biosignaling

Question 1

Intracrine

Answer 1

Signal that acts within the cell

Question 2

Autocrine

Answer 2

Signal that is released and then binds to its own receptors

Question 3

Juxtacrine

Answer 3

Howdy next door neighbor

Question 4

Paracrine

Answer 4

Howdy neighbor but not next door neighbor

Question 5

Cytokines signal via which pathway?

Answer 5

Paracrine

Question 6

What are the three main kinds of membrane receptors?

Answer 6

Ionchannel Linked, Enzyme Linked, G Protein Coupled

Question 7

Ion Channel Linked

Answer 7

Ligand gated ion channel like neurotrans

Question 8

Enzyme linked receptors

Answer 8

Tend to be kinases, know Receptor Tyrosine kinase

Question 9

What is the structure of a gprotein?

Answer 9

Aplha, Beta, and Gamma (heterotrimeric structure)

Question 10

True or False: GTP needs to be present to activate g protein pathway

Answer 10

true

Question 11

IP3 Pathway

Answer 11

Uses IP3 and Ca2+ to activate PKC

Question 12

cAMP Pathway

Answer 12

Alpha subunit of gprotein interacts with adenylyl cyclase to activate cAMP which activates PKA

Question 13

True or False: hydrophobic hormones can act on many cells where as protein/ aa cannot

Answer 13

true