Question

Please answer all three questions!

Transaminations in the cell require the vitamin and the characteristic reaction is to form a. thiamin pyrophosphate (Vit B1) decarboxylations b. Vit C hydroxylations c. cyanocobalamine (Vit B12) intramolecular rearrangements/isomerizations d. folic acid (Vit Bg): one carbon transfers e. pyridoxal-P (Vit B6): Schiff's bases QUESTION 34 melting point as the chain length increases; and a melting point as the number of double bonds A fatty acid will have a increase a. higher, lower b. lower, higher higher, unchanged d. higher, higher e. lower, lower QUESTION 35 What is the product of the transamination of the amino acid aspartic acid? a. oxaloacetate b.cysteine c. acetyl-SCOA d. carnitine Click Save and Submit to save and submit. Click Save All Answers to save all answers. Save

Answer 1

1. The transamination reaction require the vitamin B6 or pyridoxal-5'-phosphate to form a Schiff's base. This formation of the Schiff's base is the rate-determining step of the transamination reaction.

The answer is E.

2. The increase in chain length will increase the melting temperature but the presence of a double bond will prevent these fatty acids to pack tightly and lower the melting temperature.

The answer is A.