Busy. Please wait.

show password
Forgot Password?

Don't have an account?  Sign up 

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.
We do not share your email address with others. It is only used to allow you to reset your password. For details read 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

Dietary Nitrogen

In the fed state, the liver can convert amino acid carbons to fatty acids and glycerol, which form the triacylglycerols of very low density lipoprotein (VLDL).
During fasting, muscle protein is degraded and supplies amino acids to the blood, and the liver converts amino acid carbons to glucose or ketone bodies.
Amino acids are used for the synthesis of many nitrogen-containing compounds such as the purine and pyrimidine bases, heme , creatine , nicotinamide, serotonin, thyroxine, epinephrine , melanin, and sphingosine
Lysosomal proteases digest endocytosed protein
Large cytoplasmic complexes(proteasomes)digest older or abnormal proteins that have been covalently tagged with protein ubiquitin for destruction
proline (P), glutamate (E), serine (S), and threonine (T) have short half-lives. hydrolyzed by the ubiquitin-proteasome system.
SUMO stands for small ubiquitin-like modifier, and when proteins are tagged with it their activities are altered (either positively or negatively depending on the protein
Pepsin is in the stomach and converts complex proteins to small peptides
Trypsin is in the pancreas and acts on basic amino acids lysine, arginine, histine
Chymtripsin is in the pancreas and acts on aromatic amino acids phenylalanine, tyrosine, and tryptophan
Elastase and Carboxiypeptidase acts on Caboxy terminal amino acids
Secretory trypsin inhibitor can cause pancreatitis
Neutral amino acids (Ala, Val, Leu, Met, Phe, Tyr, Ile)0r Zwitter ions
Basic amino acids (Lys, Arg) and Cysteine
Acidic amino acids (Asp, Glu)
Sodium–amino acid carrier system is secondary active transport
The L-system of amino acid transport is not dependent on sodium for cotransport. The L- system transports branched-chain and aromatic amino acids, and will be exploited in a treatment for phenylketonuria (PKU).
Disease related to defective membrane-transport systems of Amino acid absorption Cystinuria, Hartnup disease
transporter is responsible for active transport of cystine, ornithine, arginine and lysine (COAL) is defective and all four appear in urine. hexagonal kidney stones Cystinuria
Deficiency of tryptophan (neutral aa) transporter in proximal renal tubular cells and on enterocytes leads to clinical features of pellagra (niacin deficiency). Diarrhea, Dermatitis and Dementia Hartnup Disease
Created by: splashgreen



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