Save
Busy. Please wait.
or

show password
Forgot Password?

Don't have an account?  Sign up 
or

Username is available taken
show password

why


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.
focusNode
Didn't know it?
click below
 
Knew it?
click below
Don't know
Remaining cards (0)
Know
0:00
share
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

Biochem Lecture 4

Review of Amino Acid Metabolism

QuestionAnswer
3 sources of amino acids are: 1. Body Protein 2. Dietary Protein 3. Synthesis of non-essential amino acids
When does our body use protein as a source of energy? When we have excess protein or a lack of Carbs and Lipids.
List the essential amino acids: Phe, Val, Thr, Ile, Met, His, Arg, Lys, Leu
What amino acids are formed by transamination reactions? Alanine, aspartate, and glutamate
Alanine is formed from ______ using the enzyme ______. Pyruvate; ALT (with glutamate as a cofactor)
Aspartate is formed from ______ using the enzyme ________. Oxaloacetate; AST
Asparagine is formed from _______. Aspartate
Glutamine is formed from ________. Glutamate
In the formation of asparagine, _________ is the amide donor. Glutamine
Proline is formed from _______. Glutamate
Serine is formed from ________. 3-phosphoglycerate (intermediate of glycolysis)or glycine
Glycine is formed from _________. Serine
Cysteine is formed from _______. Serine and Methionine
Tyrosine is formed from _________. Phenylalanine
PKU is a disease that leads to CNS problems and pigmentation deficiencies and is caused by_____. The absense of phenylalanine hydroxylase; the enzyme that catalyzes the conversion of phenylalanine to tyrosine.
Homocystinuria is a disease that causes premature vascular disease and mental defects and is caused by ________. An absence of the enzyme cystathionine synthase which catalyzes the creation of Cystine.
3 sources of amino acids are: 1. Body Protein 2. Dietary Protein 3. Synthesis of non-essential amino acids
When does our body use protein as a source of energy? When we have excess protein or a lack of Carbs and Lipids.
List the essential amino acids: Phe, Val, Thr, Ile, Met, His, Arg, Lys, Leu
What amino acids are formed by transamination reactions? Alanine, aspartate, and glutamate
Alanine is formed from ______ using the enzyme ______. Pyruvate; ALT (with glutamate as a cofactor)
Aspartate is formed from ______ using the enzyme ________. Oxaloacetate; AST
Asparagine is formed from _______. Aspartate
Glutamine is formed from ________. Glutamate
In the formation of asparagine, _________ is the amide donor. Glutamine
Proline is formed from _______. Glutamate
Serine is formed from ________. 3-phosphoglycerate (intermediate of glycolysis)or glycine
Glycine is formed from _________. Serine
Cysteine is formed from _______. Serine and Methionine
Tyrosine is formed from _________. Phenylalanine
PKU is a disease that leads to CNS problems and pigmentation deficiencies and is caused by_____. The absense of phenylalanine hydroxylase; the enzyme that catalyzes the conversion of phenylalanine to tyrosine.
Homocystinuria is a disease that causes premature vascular disease and mental defects and is caused by ________. An absence of the enzyme cystathionine synthase which catalyzes the creation of Cystine.
Ketogenic amino acids yield ______. acetyl CoA or acetoacetate
Glucogenic amino acids yield ______. Pyruvate or Kreb cycle intermediates
Aminotransferases (transaminases) depend on Vitamin b6
The 2 most important aminotransferases are: ALT and AST
Alanine amino transferase (ALT) changes alanine and a-ketoglutarate into _________ pyruvate and glutamate
Aspartate amino transferase (AST) changes glutamate and a-ketoglutarate into ________ Aspartate and oxaloacetate
_________ are the sources of urea nitrogen. Aspartate and ammonia
________ releases free ammonia for urea synthesis. Oxidative deamination reaction of glutmatate.
The oxidative deamination reaction of glutamate releases what products? a-ketoglutarate + NH3 (ammonia)
What enzyme is involved in the oxidative deamination of glutamate? glutamate dehydrogenase
Where is arginase found and what does it do? Arginase is only found in the liver; It converts arginine to urea in the Urea cycle.
What is the overall reaction of the Urea Cycle? Aspartate + NH3 + CO2 + 3 ATP ----> Urea + Fumurate + 2 ADP + AMP + 2 Pi + PPi
The first two reactions of the Urea cycle occur in the ________, and the remaining three take place in the __________. Mitochondrial Matrix; Cytosol
Created by: chilangberto
 

 



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