Busy. Please wait.
Log in with Clever

show password
Forgot Password?

Don't have an account?  Sign up 
Sign up using Clever

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.
Didn't know it?
click below
Knew it?
click below
Don't Know
Remaining cards (0)
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

MCAT Bio. Ch. 5

Endocrine Signaling Involves Secretion Of Hormones Directly Into: The bloodstream
Hormones Travel To Distant Target Tissues Where They Bind To: Receptors and induce a change in gene expression or cell function
Peptide Hormones Are Composed Of: Amino acids and are derived from larger precursors that are cleaved during posttranslational modifications
Peptide Hormones Are Polar And Cannot Pass Through: The plasma membrane
Peptide Hormones Bind To: Extracellular receptors where they trigger the transmission of a secondary messenger
Each Step Of The Signaling Cascade Can Demonstrate: Amplifcation of the signal
Peptide Hormones Usually Have Rapid Onset But: Are short-lived
Peptide Hormones Travel Freely In The Bloodstream And Do Not Require: A special carrier
Steroid Hormones Are Derived From: Cholesterol
Steroid Hormones Are Minimally Polar And Can Pass Through: The plasma membrane
Steroid Hormones Bind To: Intracellular or intranuclear receptors where they promote conformational change and bind to DNA, which affects the transcription of a particular gene
Steroid Hormones Usually Have Slow Onset But: Are long-lived
Steroid Hormones Cannot Dissolve In The Bloodstream And Must be Carried By: Specific proteins
Amino Acid-Derivative Hormones Are Modified amino acids. Their chemistry shares some features with peptide hormones and some features with steroid hormones. Different amino acid-derivative hormones share different features with these other hormone classes.
Ex's Of Amino Acid-Derivative Hormones Include: Epinephrine, norepinephrine, triiodothyronine, and thyroxine
Direct Hormones Have Major Effects In: Non-endocrine tissues
Tropic Hormones Have Major Effects In: Other endocrine tissues.
The Hypothalamus Is The Bridge Between: The nervous and endocrine systems
The Release Of Hormones From The hypothalamus Is Mediated By A Number Of Factors Including: Projections from other parts of the brain, chemo- and baroreceptors in the blood vessels, and negative feedback from other hormones
In Negative Feedback, The Final Hormone (Or Product) Of A Pathyway Inhibits: Hormones (or enzymes) earlier in the pathway, maintaining homeostasis.
Created by: SamB91
Popular MCAT sets




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:
restart all cards