1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
iris [78.8K]
3 years ago
10

Acetylcholine binds to a GPCR on heart muscle, making the heart beat more slowly. The activated receptor stimulates a G protein,

which opens a K channel in the plasma membrane. Which of the following would enhance this effect of the acetylcholine
(a) addition of a high concentration of a non-hydrolyzable analog of GTP

(b) addition of a drug that prevents the α subunit from exchanging GDP for GTP

(c) mutations in the acetylcholine receptor that weaken the interaction between the receptor and acetylcholine

(d) mutations in the acetylcholine receptor that weaken the interaction between the receptor and the G protein
Biology
1 answer:
kogti [31]3 years ago
6 0

Answer:

The correct answer is option (b) "addition of a drug that prevents the α subunit from exchanging GDP for GTP".

Explanation:

The G protein is a name given to a family of proteins that act as a switch in diverse cellular processes, transmitting signals from outside to inside of the cells. When a G protein receptor is activated by a neurotransmitter such as dopamine, the alpha subunit exchanges its GDP for a GTP and disassociates G-protein itself. An addition of a drug that prevents this action would prevent  G protein disassociation, which would enhance the effect of stimulating G protein that acetylcholine does.

You might be interested in
Which is the MOST accurate description about how the different types of feed mechanisms work.
marishachu [46]

Answer:

D

Explanation:

Positive feedback loops are rarer than negative ones because of homeostasis, but they do occur. Negative feedback loops return to the set point in reverse, and positive feedback loops amplify a departure from the set point​.

6 0
3 years ago
एक उत्तल लेंस की दूरी 40 सेंटीमीटर है लेंस की छमता की गणना कीजिए ​
AysviL [449]

Answer: can you translate this for me plz

Explanation:

6 0
3 years ago
which choice is a chemical messenger that can directly influence gene expression? a. nonsteroid hormone b. steroid hormone c. AT
anastassius [24]
B. Steroid hormone

This is because most hormones are steroids, that send long distance signaling throughout your body.
4 0
3 years ago
Discribe the structure of paramecium​
Elanso [62]

Answer:

The widest part of the body is below the middle. The body of a paramecium is asymmetrical. It has a well-defined ventral or oral surface and has a convex aboral or dorsal body surface. Its whole body is covered with a flexible, thin and firm membrane called pellicles.

Explanation:

7 0
3 years ago
Read 2 more answers
Why is the work ethic important to a system of privatization?
Mekhanik [1.2K]
Colonized countries are forced to rely on manufactured goods from their mother countries and prevents development of industry.
4 0
3 years ago
Read 2 more answers
Other questions:
  • What process produces the 2N sporophyte in the moss life cycle
    12·1 answer
  • Describe what happened when the Paramecium populations were mixed in the same test tube.
    15·1 answer
  • A. Cows that have a spotted coat have a roan coloring. Both (blank)
    15·1 answer
  • What is called the next step in scientific method following making a prediction
    14·2 answers
  • Why would you not test the affect on the amount of water and temperature on the germination of seeds at the same time pleeeaseee
    10·1 answer
  • After isolating the rough endoplasmic reticulum from the rest of the cytoplasm, you purify the RNAs attached to it. Which of the
    12·1 answer
  • Choose all the answers that apply. Which of the following are types of slope failure?
    13·2 answers
  • Can we get colored shadows? Why/why not?
    6·1 answer
  • The main factors that determine aquatic biomes include
    7·2 answers
  • Application of pesticides cause profound<br> ... in the normal microbial activity in the soil
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!