About Two-Thirds of Waste Carbon Dioxide Is Carried Back to the Lungs

question 68

Multiple Choice

About two-thirds of waste carbon dioxide is carried back to the lungs in higher animals by which method given below?

• A)By red blood cells on the empty hemes
• B)Dissolved in blood plasma as bicarbonate and hydrogen ions
• C)Dissolved in lymph in lymph ducts
• D)On myoglobins
• E)None of the choices is correct

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