Whether oxygen diffuses from the alveoli into the blood or not is dependent upon _______________.
A) the partial pressure of oxygen in the lungs and in the blood
B) the partial pressure of oxygen in the lungs only
C) the partial pressure of oxygen and carbon dioxide in the blood
D) the partial pressure of all gases in the atmosphere and blood
Answer: A) the partial pressure of oxygen in the lungs and in the blood
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One of the biggest challenges facing terrestrial organisms is to
A) Escape from predators. B) Survive food shortages. C) Reduce water loss. D) Find shelter.
The transport of digested food into the blood or lymph is ________.
A. absorption B. ingestion C. segmentation D. deglutition
Karl is around 60 years old. He begins to notice that he can't control his bladder as efficiently lately. Leakage of urine is starting to become common. He might have
A. damaged nephrons. B. an enlarged prostate. C. less vitamin D. D. enlarged kidneys.
Always attempt to answer the phone by the __________ ring
Fill in the blank(s) with correct word