If there is a high concentration of carbon dioxide in the blood stream, it will diffuse into the ? A. Hemoglobin

B. Protein Channel

C. Capillary

D. Alveolus

Which of the organisms listed below performs nitrogen fixation? a. legumes b. plants c. bacteria d. fungi

Hemoglobin is a proton that carries oxygen around the body what is hemoglobin made from

Which of the following best describes the purpose of the parathyroid hormone? a. it decreases the blood calcium level and decreases blood phosphorus level. b. it decreases the blood calcium level and increases the blood phosphorus level. c. it increases the blood calcium level and increases blood phosphorus level. d. it increases the blood calcium level and decreases blood phosphorus level.