The substance that binds to the central chemoreceptors is
A) carbon dioxide
B) hydrogen ions
C) bicarbonate ions
D) oxygen
Ans: B) hydrogen ions
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Which two cell types are primarily responsible for graft rejection?
A. Marcrophages and natural killer cells B. Natural killer cells and B cells C. Cytotoxic T cells and helper T cells D. B cells and plasma cells E. B cells and helper T cells
Which of the following is one of the four major types of synarthrotic joints?
A) suture B) gomphosis C) synchondrosis D) synostosis E) All of the answers are correct.
Which of the following bones is paired?
A. Mandible B. Vomer C. Sphenoid D. Occipital E. Temporal
Carbon dioxide results from the loss of carbon atoms during:
A) the electron transport chain. B) ATP production by ATP synthase. C) the citric acid cycle. D) chemiosmosis.