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WorksheetsUrea cycle
Total questions: 10
Worksheet time: 5mins
Urea has two amino groups, one derived from Ammonia and the other from ___________
Fumarate
Aspartate
Succinate
Oxaloacetate
Carbon atom is supplied by ___________
Carbon dioxide
Aspartate
carboxylic acid
Oxalic acid
The first 2 enzymes of urea cycle are present in
Cytosol
Chloroplast
Mitochondria
Lysosomes
CPS l of mitochondria catalyzes the condensation of Ammonia and carbon dioxide to form
Urea
Citrulline
Ornithine
Carbamoyl phosphate
Which among the following are true about first step of urea cycle?
It consumes ADP and Pi
It is reversible
It is regulated by ATP
This step consumes 2 ATP and is irreversible, and rate-limiting
_________-is synthesized from carbamoyl phosphate and ornithine by ornithine transcarbamoylase
Orinithine aminase
Ornithine
Citrulline
Argino succinate
3rd step of urea cycle involves condensation of
Urea and aspartate
Citrulline and Aspargine
Citrulline and aspartate
Aspartate and fumarate
___________ produced in the 4th step of Urea cycle enters TCA cycle
Fumarate
Arginite
Aspartate
Urea
___________ is the immediate precursor for urea
Aspartate
Ammonia
Fumarate
Arginine
Which enzyme is responsible for the regeneration of ornithine?
Asparginase
Ornithase
Arginase
Argino succinase
