Altogether, the body secretes about 7 liters of water into the alimentary canal each day. About what percentage of this water gets reabsorbed?
A) 30%
B) 50%
C) 60%
D) 90%
D
Biology & Microbiology
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Metanephridia are found in ____
a. annelids b. mammals c. flatworms d. insects e. reptiles
Biology & Microbiology
Many polar-dwelling fishes have "antifreeze proteins" that prevent their bodies from freezing solid
even at very low temperatures. Briefly describe how these proteins function.
What will be an ideal response?
Biology & Microbiology
Two lines of work indicated that crossing over actually involves breakage and reunion of chromatid material. What organisms were involved, and who did the work?
What will be an ideal response?
Biology & Microbiology
Which of the following bacteria oxidize nitrite (NO2-) to produce nitrate (NO3-)?
A) Nitrobacter B) Azospirillum C) Nocardia D) Cyanobacter E) Rhizobium
Biology & Microbiology