Nitrogen Metabolism
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| show | nitrogen fixation, nitrogenous
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| NH4 to NO2- is | show 🗑
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| NO2- to NO3- | show 🗑
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| NO3- to N2 | show 🗑
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| show | glutamate synthase, glutamine synthetase
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| show | bacteria and plants
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| show | glutamine synthetase
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| a-Ketogluturate + NH4 (using NADPH and ATP) converts to | show 🗑
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| Glutamine and glutamate are ___________ carriers | show 🗑
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| show | Transaminase
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| show | YES
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| show | PLP (pyridoxal-5-phosphate)
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| show | To mop up free nitrogen
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| Glutamine synthetase converts _______ to _______ | show 🗑
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| show | glutamine to glutamate
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| show | a-ketoglutarate +NH4(+) +NADPH + ATP --->
glutamate + NADP+ + ADP + Pi
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| PLP is derived from _____ | show 🗑
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| show | Lysine
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| show | a covalent bond
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| What is the end product of this bond? | show 🗑
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| The enzyme-lysine-PLP formed would be considered a ______ | show 🗑
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| show | the goal is to transport an amine group from a-ketoglutarate to another a-keto acid
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| The enzyme-PLP-schiff base formed by PLP lysine and the enzyme serve as a ______ to transanimase | show 🗑
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| _____________ incorporates amine into a biomolecule | show 🗑
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| show | glutamine synthetase
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| show | glutamine synthetase
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| Which of the two assimilation enzymes DOES NOT require triphosphate molecules to work (like ATP, GTP, etc)? | show 🗑
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| Glutamate is a precursor to which amino acids? | show 🗑
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| show | glycine and then cysteine
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| show | Tetrahydrofolate, this happens during biosynthesis
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| show | Tyrosine
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| show | serine hydroxymethyl transferase
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| show | Phe-hydroxylase
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| Which amino acids are glucogenic? | show 🗑
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| Which amino acids are ONLY ketogenic? | show 🗑
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| show | IPTTT, Isoleucine, Phenylalanine, Threonine, Tryptophan, Tyrosine
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| Pyruvate, Oxaloacetate, a-Ketoglutarate, Succinyl CoA and Fumerate are examples of which type of precursors? | show 🗑
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| show | Ketogenic precursors
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| show | NH3+ breaks off from the rest of the amino acid (making it a a-keto acid)
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| show | It is used to make Urea
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| What happens to the rest of the amino acid after catabolism? | show 🗑
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| In amino acid catabolism, some amino acids are converted to glucogenic substrates via ______ | show 🗑
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| show | Serine and cysteine, both of which have NH3 removed
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| Where does the urea cycle occur? | show 🗑
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| show | partly in mitochondria and partly in cytosol of cells
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| show | Disposal of nitrogen
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| What percent of nitrogen is disposed/excreted as urea? | show 🗑
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| show | glutamate and aspartate (TATE)
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| What supplies carbon to the urea cycle? | show 🗑
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| show | IMP, then yields AMP and GMP
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| What activates glutamine PRPP amidotranferase? | show 🗑
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| What inhibits glutamine PRPP amidotransferase? | show 🗑
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| show | bicarbonate, Aspartate, and glutamine
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| show | UTP and CTP
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| First step of pyrimidine biosynthesis? | show 🗑
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Created by:
cdaughtry