★ Breathing System Quiz
What is the percentage of carbon dioxide in exhaled air?
A. 78%
B. 14%
C. 5%
D. Variable
Select your answer:

Topics:
CPR Cardiovascular and Respiratory Infectious Disease and Pathogens Cardiovascular Nursing Cell Cycle; Cancer Human Anatomy Musculoskeletal Anatomy: Knee Year 7 Nutrition Integumentary System Bonding and the Periodic Table Homeotic Genes and Cancer Forensics Terms A&P Musculoskeletal Musculoskeletal Pathophysiology Biodiversity ConservationOther quiz:
Thyroid Gland › ViewWhy do thyroid hormones affect every cells in the body ?
A. Thyroid hormones don’t affect every cells
B. They don’t need thyroid hormones
C. They need energy to survive
D. None of these above
Circulatory System › View
PLATELETS ARE CELL FRAGMENT THAT
A. HELP YOUR BLOOD CLOT
B. CARRY OXYGEN IN THE BLOOD
C. FIGHT INFECTION
D. EXCHANGES GASES IN THE LUNGS