4.1 cell communication

Question 1

juxtacrine

Answer 1

cells must touch to signal

Question 2

autocrine

Answer 2

cell sends signal to self- important in embryonic development (specialized cells)

Question 3

paracrine

Answer 3

cells signal to surrounding cells to detect if there are more there

Question 4

quorum sensing

Answer 4

bacteria cells using paracrine signaling to launch synchronized attack

Question 5

synaptic

Answer 5

neuron signaling in animals (looks like shower)

Question 6

endocrine

Answer 6

long distance- ligand released from one part of the body, travels through blood stream to target cell.
-hormones

Question 7

what ripens fruit

Answer 7

ethelyne

Question 8

ligand

Answer 8

signaling molecule

Question 9

can a ligand bind with just any receptor?

Answer 9

no. ligands and receptors are only for their specific match and function

Question 10

what passes passively

Answer 10

small, nonpolar molecules

Question 11

why would a molecule need an exterior receptor

Answer 11

if it cannot pass through the membrane passively to the nucleus