Chemoreceptors require that the chemical they sense to be ________.
A. placed into the mouth
B. inhaled into the nose
C. dissolved in a liquid
D. salty, bitter, sweet, or sour
Answer: C
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We know that fatty acids are an important source of energy for tissues. List the ketone bodies and explain why fatty acids sometimes need to be converted to ketone bodies before they can be used. Briefly summarize the two main steps in ketone metabolism
What will be an ideal response?
Benefits of regular exercise include all of the following, EXCEPT __________.
A) lowered blood pressure. B) increased plasma levels of HDL (high-density lipoproteins). C) decreased risk of heart attack. D) decreased plasma levels of triglycerides. E) increased levels of LDL (low-density lipoproteins).
The first recognizable feature of the cardiovascular system is (the)
A) heartbeat at birth. B) formation of blood cells in the liver. C) heartbeat at five months. D) development of the aorta at two months. E) None of the answers are correct
Leukopenia ________
A) may result from bone marrow cancer, or from living at high altitudes B) is characterized by uncontrolled proliferation of abnormal WBCs C) may indicate a disease such as cirrhosis of the liver or tuberculosis D) is characterized by an abnormally high WBC count