
The air we breathe in (ambient room air) from the room/outside has approximately ______ oxygen.
A. 100%
B. 50%
C. 21%
D. 11%
Select your answer:

Topics:
Respiratory System Living Organisms & Animal Behaviors Properties of Hair and Scalp HCMA - Hematology Excretion T Cells Digestive and Circulatory System Muscles Muscular System Movements The Human Body Neuroanatomy Inflammation and Tissue Repair Joints in our Body Cardiorespiratory System Circulation of BloodOther quiz:
Urinalysis/ Immunology Make up › View—————-are foreign substances that induce an immune response causing the body to produce ________________
A. Antibodies/Antigen
B. Antigens/Antibodies
C. Antigen/lymphokines
D. Antibodies/Cytokines
Digestion and Absorption of Carbohydrates › View
The overall goal of carbohydrate digestion is to
A. break carbohydrates down into monosaccharides
B. generate disaccharides
C. move fibers into the bloodstream
D. obtain kcal within the intestinal cells