The archenteron of a frog develops into the _____
A) blastocoel
B) endoderm
C) placenta
D) lumen of the digestive tract
D
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Salinity is more variable in the intertidal zone of rocky shores than in sandy and muddy shores
Indicate whether the statement is true or false
Which protists are associated with red tides?
A) red algae B) brown algae C) dinoflagellates D) green algae
Degranulating leukocytes release ______, which cause(s) nearby arterioles to widen, increasing blood flow.
A. cytokines B. histamine C. complement D. neuromodulators E. PAMP
What is the fate of metabolites during respiration?
a. They are oxidized completely to carbon dioxide and water. b. They are reduced to from NADH and FADH2. c. They are oxidized completely to form pyruvic acid. d. They are rearranged to form GTP.