G Protein-Coupled Receptor Signaling

G Protein-Coupled Receptor Signaling

Assessment

Interactive Video

Biology

11th - 12th Grade

Hard

Created by

Jackson Turner

FREE Resource

The video tutorial explains bronchodilators, focusing on beta-2 adrenoceptor agonists like salbutamol and muscarinic receptor antagonists like tiotropium bromide. It details the mechanisms by which these drugs facilitate bronchodilation, including the roles of G protein-coupled receptors, cAMP, and calcium ion regulation in smooth muscle relaxation.

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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the primary method of administration for Salbutamol?

Topical application

Intravenous injection

Inhalation through an inhaler

Oral tablets

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which receptor does Salbutamol primarily target?

Beta-1 adrenergic receptor

Muscarinic receptor

Beta-2 adrenergic receptor

Alpha-1 adrenergic receptor

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the role of cAMP in the beta-2 adrenoceptor signaling pathway?

It inhibits protein kinase A

It activates protein kinase A

It binds to calcium ions

It deactivates adenylate cyclase

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How does the Gβ/Gγ dimer affect potassium channels?

It has no effect on potassium channels

It inhibits potassium channels

It activates potassium channels

It closes potassium channels

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the effect of hyperpolarization on smooth muscle cells?

Increases calcium ion release

Increases muscle contraction

Decreases calcium ion release

Decreases potassium ion efflux

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the primary effect of beta-2 adrenoceptor stimulation on smooth muscle cells?

Decreased potassium ion efflux

Increased contraction

Increased calcium ion concentration

Decreased contraction

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which muscarinic receptor subtype is most prevalent on bronchial smooth muscle cells?

M3

M4

M2

M1

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