Save
Busy. Please wait.
Log in with Clever
or
show password
Forgot Password?
Don't have an account?  Sign up 
Sign up using Clever
or
Username is available taken
show password


Make sure to remember your password. If you forget it there is no way for StudyStack to send you a reset link. You would need to create a new account. Your email address is only used to allow you to reset your password. See our Privacy Policy and Terms of Service.

Already a StudyStack user? Log In

Reset Password
Enter the associated with your account, and we'll email you a link to reset your password.
focusNode
Didn't know it?
click below
 
Knew it?
click below
Don't Know
Remaining cards (0)
Know
0:00
edit
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.

  Normal Size     Small Size show me how

BIO202-CH16-cAMP

BIO202 - CH16 - Cyclic AMP - Marieb/Hoehn - RioSalado - AZ

QuestionAnswer
What is cyclic AMP? Intracellular 2nd messenger - mediates effects of 1st (extracellular) messenger; formed from ATP by membrane enzyme (adenylate cyclase).
Except for thyroid hormone, all amino-acid based hormones exert their signaling effects through __. intracellular 2nd messengers
Name the 3 plasma membrane components that interact in cyclic AMP (cAMP). Hormone receptor, G protein (signal transducer) & adenylate cyclase (effector enzyme)
What is the first messenger in cyclic AMP signaling? The hormones binding to its receptor
What does the binding of a hormone cause in cAMP signaling? The receptor to change shape & bind to G protein
G protein is activated as __ is displaced by high energy compound __. GDP (guanosine diphosphate), GTP (guanosine triphosphate)
G protein behaves like a light switch. It is off when __ is bound to it & on when __ binds. GDP, GTP
Activated G protein binds to what? the effector enzyme adenylate cyclase
G proteins can __ or __ adenlyate cyclase. stimulate or inhibit
If activated, adenylate cyclase generates __. cAMP (2nd messenger) from ATP
cAMP triggers activation of __. Protein Kinase A
What are protein kinases? Enzymes that phosphorylate (add phosphate group) various proteins
Active protein kinase A triggers what? Responses of target cell - opens ion channels, activates, enzymes, etc.
Each activated adenylate cyclase generates __. Large #s of cAMP molecules & can catalyze 100s of reactions.
Theoretically, one hormone molecule binding can generate __. millions of final product molecules.
cAMP is rapidly degraded by __. phosphodiesterase - intracellular enzyme
Since phosphodiesterase rapidly destroys cAMP, continued cellular activity is prompted by __. continued production of hormones.
Some G proteins inhibit adenylate cyclase & __. reduce cAMP concentration.
Created by: Ladystorm
Popular Anatomy sets

 

 



Voices

Use these flashcards to help memorize information. Look at the large card and try to recall what is on the other side. Then click the card to flip it. If you knew the answer, click the green Know box. Otherwise, click the red Don't know box.

When you've placed seven or more cards in the Don't know box, click "retry" to try those cards again.

If you've accidentally put the card in the wrong box, just click on the card to take it out of the box.

You can also use your keyboard to move the cards as follows:

If you are logged in to your account, this website will remember which cards you know and don't know so that they are in the same box the next time you log in.

When you need a break, try one of the other activities listed below the flashcards like Matching, Snowman, or Hungry Bug. Although it may feel like you're playing a game, your brain is still making more connections with the information to help you out.

To see how well you know the information, try the Quiz or Test activity.

Pass complete!
"Know" box contains:
Time elapsed:
Retries:
restart all cards