The respiratory exchange ratio (RER) is a way of determining the body's metabolism of ____.
A) creatine phosphate and ATP
B) amino acids
C) carbohydrate and fat
D) lactate
Arrange the energy sources muscle glycogen, adipose tissue triglyceride, liver glycogen, and blood glucose in order from the least to the greatest based on the amount of energy stored in the body:
…).A…..B…..C…..D…..
Least greatest

Question

Quizplus · Accepted Answer

The respiratory exchange ratio (RER) is a measure of how much oxygen the body consumes versus how much carbon dioxide it produces during metabolism. The ratio can determine the predominant fuel source being used by the body at any given time.

Choice C (carbohydrate and fat) is the correct answer because these are the two primary fuel sources for the body. The RER will vary depending on the intensity of exercise and the individual's fitness level, but generally a higher RER indicates more carbohydrate being used for energy, while a lower RER indicates more fat being used.

Regarding the energy sources, the correct order from least to greatest would be:
A - blood glucose
B - muscle glycogen
C - liver glycogen
D - adipose tissue triglyceride

This is because blood glucose and muscle glycogen are relatively small stores of energy that can be depleted quickly during exercise, while liver glycogen and adipose tissue triglycerides are larger stores that can provide energy for longer durations. However, it's important to note that the body can use a combination of these sources simultaneously during exercise.

The Respiratory Exchange Ratio (RER) Is a Way of Determining