Cellular respiration requires ________ to break down organic nutrients to release energy, which is captured in high energy ________ bonds.
A. oxygen; phosphate
B. oxygen; peptide
C. carbon dioxide; phosphate
D. oxygen; hydrogen
Answer: A
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The anterior and posterior interventricular sulci on the outside of the heart contain
A) coronary arteries. B) grooves. C) fat. D) cardiac veins. E) All of the answers are correct.
Osteocytes are found within
A) dentin. B) lacunae. C) lamellae. D) canaliculi.
What organ serves as the control center for the regulation of erythropoiesis?
A) liver B) spleen C) pancreas D) kidney
Why can cardiac tamponade be a life-threatening condition?
A) Cardiac tamponade can be life-threatening because accumulating fluid in the pericardial cavity restricts heart movement. B) Cardiac tamponade can be life-threatening because accumulating fluid in the mediastinum restricts heart movement. C) Cardiac tamponade can be life-threatening because loss of fluid in the pericardial cavity causes friction which causes arrhythmias. D) Cardiac tamponade can be life-threatening because loss of fluid in the mediastinum causes friction which causes arrhythmias. E) Cardiac tamponade can be life-threatening because a hole in the heart leads to mixing of oxygenated and deoxygenated blood.