Question

In alanine-cycle alanine will be transported to the liver to make which of the following sugars?

a) Fructose
b) Galactose
c) Glucose
d) Mannose

Answer 1

Alanine is transported to the liver to make glucose through the process of gluconeogenesis, as part of the glucose-alanine cycle.

Step-by-step explanation:

In the alanine cycle, alanine is transported to the liver to make glucose. The glucose-alanine cycle is a process where muscle tissue supplies alanine to the liver. Here, alanine is converted back into pyruvate via deamination and then converted to glucose through the process of gluconeogenesis. This glucose can then be released into the bloodstream and taken up by muscle tissue as a source of energy. Glucose is defined as an aldose, a type of monosaccharide that has a carbonyl group at the end of the carbon chain. This is in contrast to ketoses like fructose and galactose, which have their carbonyl groups in middle positions of the carbon chain.