Lesson 9: Chemical Communication: Neurotransmitters And Hormones

Question 1

Acetylcholine is

Select one:

a. A cholinergic chemical messenger
b. An amino acid chemical messenger
c. A steroid based chemical messenger
d. An adrenergic chemical messenger
e. A peptidergic chemical messenger

Answer 1

a. A cholinergic chemical messenger

Question 2

Cells communicate with each other via

Select one:

a. Chemical signalling
b. Cells can only communicate with adjacent cells
c. Electrical and chemical signalling
d. Electrical signalling
e. Cells are not able to communicate with each other

Answer 2

c. Electrical and chemical signalling

Question 3

Dendrites

Select one:

a. Increase the surface area of a neuron
b. Allow neurons to communicate with multiple other neurons
c. Transfer signals to an integrating region of the neuron
d. All of these answers are correct
e. Receive incoming signals

Answer 3

d. All of these answers are correct

Question 4

Hormones act as short-distance chemical messengers. True or False?

Answer 4

False

Question 5

Hormones are

Select one:

a. Cholinergic, amino acid, adrenergic, peptidergic or steroid based
b. Cholinergic based
c. Amino acid or adrenergic based
d. Adrenergic, peptidergic or steroid based
e. Steroid based

Answer 5

d. Adrenergic, peptidergic or steroid based

Question 6

Insulin is

Select one:

a. An amino acid chemical messenger
b. An adrenergic chemical messenger
c. A steroid based chemical messenger
d. A peptidergic chemical messenger
e. A cholinergic chemical messenger

Answer 6

d. A peptidergic chemical messenger

Question 7

Protein molecules that bind to ligands are referred to as

Select one:

a. None of these answers are correct
b. Chemical messengers
c. Vesicles
d. Secondary messengers
e. Receptors

Answer 7

e. Receptors

Question 8

Receptors can be membrane bound, or found in the cell nucleus or cytosol. True or False?

Answer 8

True

Question 9

Serotonin is derived from

Select one:

a. Tryptophan
b. Acetyl CoA
c. Cholesterol
d. Tyrosine
e. Hisditine

Answer 9

a. Tryptophan

Question 10

Steroid hormones are

Select one:

a. Unable to be stored
b. All of these answers are correct
c. Able to diffuse across cell membranes
d. Derived from cholesterol
e. Lipid-soluble

Answer 10

b. All of these answers are correct

Question 11

The extracellular signal ligand is often referred to as the secondary messenger. True or False?

Answer 11

False

Question 12

The neuron that delivers the signal to the synapse is known as the presynaptic cell. True or False?

Answer 12

True

Question 13

Water-soluble extracellular chemical messengers diffuse through the cell membrane and bind with receptors inside the cell. True or False?

Answer 13

False

Question 14

Which of the following is an inhibitory neurotransmitter?

Select one:

a. Cysteine
b. Aspartic acid
c. Glutamic acid
d. None of these answers are correct
e. All of these answers are correct

Answer 14

d. None of these answers are correct

Question 15

Which of the following is TRUE with regards to acetylcholine receptors?

Select one:

a. Low doses of nicotine act as an agonist
b. Succinylcholine acts as an agonist or antagonist depending on concentration
c. Decamethonium bromide acts as a competitive inhibitor
d. All of these answers are correct
e. Large doses of nicotine act as an antagonist, blocking the receptor

Answer 15

d. All of these answers are correct