Without sufficient oxygen, a typical human cell can not make enough ATP to carry on its vital activities and may die. Human body cells deprived of oxygen die from lack of energy.

A pyrogen is a substance that causes

What organ of the body is the graveyard for old, worn-out erythrocytes?  

The respiratory exchange ratio (RER) is a way of determining the body’s metabolism of ____.

Digestion begins in the ____.

Under the most demanding conditions (e.g., very high-intensity exercise), ATP concentrations in exercising skeletal muscles rarely drop more than _____ percent.

The nutrient content of foods began to decrease when which of the following became widespread?

Scientific studies of exercise-associated muscle cramping (EAMC) have concluded that this condition is ____.

Name the three major lipids in human nutrition.

How many total heme groups are there within a hemoglobin molecule?