IMMUNOLOGY

Detailed explanation-1: -Carbohydrates are oxidized through aerobic respiration using RER, resulting in an equal ratio of CO2 release and oxygen consumption; this implies that 100% of carbohydrates are consumed to produce ATP. When fat is oxidized and measured using RER, the outcome is reduced CO2 production for every oxygen molecule consumed.

Detailed explanation-2: -The primary role of carbohydrates is to supply energy to all cells in the body. Many cells prefer glucose as a source of energy versus other compounds like fatty acids. Some cells, such as red blood cells, are only able to produce cellular energy from glucose.