February 27, 2017

Homework Help: Biology

Posted by Joey on Thursday, March 31, 2011 at 6:32pm.

Which substance does not leave the nephrons by active transport?

a)Potassium ions
c)Calcium ions
d)Phosphate ions

I think its either water or glucose...

Another question..

Two strategies- negative feedback and antagonistic hormones- have evolved to maintain a dynamic equilibrium within the body of a mammal. Describe how these two strategies maintain homeostatsis.

help pleaseee

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