The primary respiratory center is directly sensitive to ________ in the blood to modify respiration rate.
A. only oxygen levels
B. carbon dioxide and hydrogen levels
C. hydrogen and oxygen levels
D. carbon dioxide and oxygen levels
Answer: B
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Lymph percolates through lymph __________, which contain special __________ that destroy bacteria picked up from the interstitial fluid
Fill in the blank(s) with correct word
The superior anterior and posterior pancreaticoduodenal arteries arise from which of the following arteries?
(A) rightcolic (B) ileocolic (C) gastroduodenal (D) hepatic (E) splenic
Which of the following would contain the greatest amount of information that scientists consider to be true to the best of their knowledge?
A. A hypothesis B. An equation C. A fact D. A law of nature E. A theory
The reaction sucrose + water ? glucose + fructose is an example of a(n) ________
A) double replacement reaction B) synthesis reaction C) decomposition reaction D) neutralization reaction E) anabolic reaction