Question

1. The release of the neurotransmitters cause cations to flow across the target cell membrane leading to membrane depolarization [an action potential]. What type of receptor is most likely responsible for this effect?
a. Protein kinase receptors.
b. Ligand-gated channels.
c. G protein coupled receptors.
d. Ion channels.
e. Intracellular receptors.

2. Which type of cellular receptor autophosphorylates itself when it interacts with its signal?
a. Protein kinase receptors.
b. Ligand-gated channels.
c. G protein coupled receptors.
d. Intracellular receptors.
e. Ion channels.

3. Which type of signal affects the same cell [type} that made it?
a. autocrine.
b. steroid hormone.
c. paracrine.
d. peptide hormone.
e. endocrine.

4. Which type of cellular receptor has 7 transmembrane helices as part of its protein structure?
a. Protein kinase receptors.
b. Intracellular receptors.
c. Ion channels.
d. G protein coupled receptors.
e. Ligand-gated channels.

5. Which of the following is directly involved in hydrolysis of GTP to GDP in response to a cell signal?
a. Ligand-gated channels.
b. intracellular receptors.
c. protein kinase receptors.
d. ion channels.
e. G proteins.

Answer 1

1. b. Ligand-gated channels receptor is most likely responsible for this effect

2. a. Protein kinase receptors cellular receptor autophosphorylates itself when it interacts with its signal

3.a. Autocrine of signal affects the same cell [type} that made it?

4. d. G protein coupled receptors cellular receptor has 7 transmembrane helices as part of its protein structure

5. e. G-protein is directly involved in hydrolysis of GTP to GDP in response to a cell signal