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Tutorial8_ans - Biochem 300 - Tutorial 8 Tutorial 8 Aug 4th...

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Biochem 300 - Tutorial 8 Tutorial 8 – Aug 4 th Topics: The Urea Cycle
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1) During strenuous anaerobic activity, which two amino acids are used as ammonia carriers in the blood stream? a) Glutamine and Glutamate b) Alanine and Glutamine c) Glutamine and Arginine d) Aspartate and Alanine e) Lysine and Histidine
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2) Which of the following is true? a) Vertebrates are mostly uricotelic b) Aquatic animals secrete nitrogen mostly as uric acid c) Aquatic animals can excrete ammonia without transformation d) Uricotelic animals use uric acid for nitrogen disposal e) Vertebrates can’t secrete ammonia or uric acid
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Which is which? Lives in a big pool of water, so expelling nasty ammonia isn’t really a problem Needs to get ride of ammonia in a less toxic way, thus urea. Used to be a reptile that needed to conserve its water at all costs while still getting ride of ammonia. Ammonia (Ammonitelic) Urea (Ureotelic) Uric Acid (Uricotelic)
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3) Which of the following is NOT true about aminotransferases? a)
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Tutorial8_ans - Biochem 300 - Tutorial 8 Tutorial 8 Aug 4th...

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