Earthworms and birds have a crop that is modified
for
a. digestion of cellulose.
b. food storage.
c. mechanical breakdown of food.
d. digestion of fats.
e. storage and elimination of undigested food.
Answer: b
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Parathyroid hormone causes the blood calcium level to rise, but calcitonin causes those levels to fall. The relationship between the two hormones is described as ________
A) expressive B) antagonistic C) synergistic D) permissive
In the reaction, 6CO2 + 6H2O ?C6H12O6 + 6O2, which side should energy be placed on?
A. the right side; this is an endergonic reaction. B. neither side; the reaction is in equilibrium. C. the right side; this is an exergonic reaction. D. the left side; this is an exergonic reaction. E. the left side; this is an endergonic reaction.
Budding release of virus may result in long lasting or persistent infection.
Answer the following statement true (T) or false (F)
Which health concerns are related to lifestyle factors?
a. obesity and diabetes b. all cancers c. Lyme disease d. bacterial infections e. SARS respiratory infections