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

une ch 8

enzymes as catalysts

QuestionAnswer
Be able to name the 6 major classes of enzymes. HOTILL 1. Hydrolase 2. Oxidoreductase 3. Transferase 4. Isomerase 5. Lyase 6. Ligase
Oxidoreductase Alcohol dehydrogenase
Transferase: Glucokinase
Hydrolase Chymotripsin
Lyase Aldolase
Isomerase Triosephosphate isomerase
Ligase Pyruvate Carboxylase
write the equation for the first step in alcohol metabolism in humans and then explain in words CH3CH2OH + NAD+ = CH3CHO + NADH + H+ Ethanol is oxidized to acetaldehyde while NAD+ is reduced to NADH.
thiamine pyrosphate an activation transfer coenzyme (helps catalysis by forming covalent bond w substrate), synth by thiamine, attacks alpha keta acids, breaks C-C bond btw carbon and carboxyl carbon
CoA activation transfer enzyme synthesized by vitamins (pantothenate), functional group is the sulfylhydryl group which forms thioester bonds with carboxylic acids, and acyl groups are activated
biotin is the vitamin and coenzyme. covalently bonded to a lysine in enzymes called carboxylases, functional group is a nitrogen that covalently bonds to a co2 group
pyridoxal phosphate vitamin pyridoxine (vitamin B6). the reactive aldehyde group usually functions in enzyme catalyzed reactions by forming a covalent bond with amino groups on amino acids.
NAD+ synth from niacin and ATP. ADP binds tightly to enzyme-causes conformational changes.
how does DFP (nerve gas) work? it forms a covalent intermediate that binds to active site of acetylcholesterase-thereby preventing it from degrading AcH. this is irreversible.
how does penicillin work? it is a transition state analog that binds tightly to glycopeptidyl transferase
why is penicillin a suicide inhibitor? suicide inhibitor= irreversible inhibitor-it binds and forms covalent bond w serine at the active site
Created by: carolanimal
Popular Biochemistry 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