quiz 4

Question 1

Ligands are produced by?

Answer 1

The bODAEEE

Question 2

2 primary ligands

Answer 2

1 hormones
2. neurotransmitters

Question 3

Hormones are secreted by

Answer 3

ENDocrine glands
directly into the CIRCULATORY system

Question 3

Hormones are either?

Answer 3

Amino acid based or steroid based

Question 4

hormones may travel

Answer 4

Long distances

Question 5

hormones are considered?

Answer 5

metabotropic because they change the metabolism of its target cell.

can influence cellular response such as mitosis.. etc

Question 6

Neurotransmitters are secreted by ?

Answer 6

axon terminal knobs into a synaptic cleft.

Question 7

Neurotransmitters are considered ionotropic IF?

Answer 7

binding to a receptor directly opens an ion channel

Question 8

Neuortranmitters are considered metabotropic IF?

Answer 8

binding to a receptor results in changing its target cells’ metabolism (and indirectly opens ion channels)

Question 9

Receptors are found on?

Answer 9

surface of cell (membrane) or in the cytosol of a cell (intracellular)

Question 10

What are the two surface receptors

Answer 10

1. ion channel linked receptor
2. G protein linked receptor

Question 11

Ion channel linked receptors are bound to?

Answer 11

an ion channel within the plasma membrane

Question 12

G protein receptors can be used by both ?

Answer 12

neurotransmitter and hormones

Question 13

Explain the process of G protein linked receptor

Answer 13

1. ligand binds to a receptor that is complementary in shape
2. this binding causes the receptor to change shape and interact with a g protein
3. G protein changes shape and interacts with the enzyme adenylate cyclase
4. adenylate cyclase catalyzes the conversion ATP to AMP.
5. AMP activates other enzymes within the cell to initiate a metabolic change within the cell.

Question 14

Ion channels are ?

Answer 14

large proteins and selectivly allow ions in and out