Urea Cycle
Über den Vortrag
Der Vortrag „Urea Cycle“ von Kevin Ahern, PhD ist Bestandteil des Kurses „Amino acid metabolism II (Texas A&M FOM II 2020 Exam Unit 1)“.
Quiz zum Vortrag
Which of the following is true regarding the urea cycle?
- Two amines are used in the reaction that forms urea.
- It primarily occurs in the muscles.
- It generates ATP.
- Water is not needed for the reaction to occur.
- It outputs 3 amines per turn of the cycle.
Which of the following is NOT true of the urea cycle?
- The urea cycle takes place in the neuronal cells to get rid of the toxic effect of ammonium ions produced during amino acid catabolism.
- One urea molecule is produced per turn of the urea cycle.
- The urea cycle occurs in the cytoplasm and mitochondria of the liver and kidney cells.
- The net reaction for the urea cycle is 2NH3 + CO2 + 3ATP + H2O → CO(NH2)2 + 2ADP + 4Pi + AMP.
- In the urea cycle, the feeder reaction synthesizes the carbamoyl phosphate by incorporating ammonium and bicarbonate ions with the help of carbamoyl phosphate synthetase.
Which of the following is not correctly matched regarding the reactions and enzymes in the urea cycle?
- Ammonium ion + bicarbonate ion → carbamoyl phosphate — ornithine transcarbamoylase
- Carbamoyl phosphate + ornithine → citrulline — ornithine transcarbamoylase
- Citrulline + ATP + asparate → argininosuccinate + AMP + 2Pi — argininosuccinate synthetase
- Argininosuccinate → arginine + fumarate — argininosuccinate lyase
- Arginine + water → urea — arginase
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Dozent des Vortrages Urea Cycle
Kevin Ahern, PhD
Dr. Kevin Ahern is a Professor in the Department of Biochemistry and Biophysics at Oregon State University (OSU), USA.
He obtained his PhD in Biochemistry from Oregon State University. Currently, he teaches courses for health sciences students at OSU.
He is co-author of three Open Educational electronic textbooks on Biochemistry and a Guide to Getting Into Medical School.
Due to his achievements, he earned OSU’s highest teaching recognition, the Elizabeth P. Ritchie Distinguished Professor Award in 2017.
Within Lecturio, Dr. Ahern teaches courses on Biochemistry and on "How to Get into Medical School”.
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Wow, these two amines are very tricky, thank you very much, Prof. Ahern!
