Pages 105-110

Question 1

Which amino acid is needed to make urea?

Answer 1

Aspartate

Question 2

Urea cycle is very important in excreting the toxic concentrations of ammonia. What enzyme is required for the initiation of the urea cycle?

Answer 2

CPS I required to make carbamoyl phosphate from CO2 and ammonia

Question 3

Which cycle allows for the transport of TCA precursor to muscle cells form liver, What are the transporter molecules?

Answer 3

Cori cycle, pyruvate to muscles, lactate to liver

Question 4

Which cycle allows for the transport of amino acid to muscle cells form liver, What are the transporter molecules?

Answer 4

Cahill cycle, alanine to liver, glucose to muscles