Aldosterone exerts effects on principal cells of the kidney by causing:

A. increased levels of cAMP and increases in the total number of Na+ channels.
B. decreased levels of cAMP and decreases in the number of open K+ channels.
C. increased numbers of Na+/K+ pumps. decreased numbers of Na+/K+ pumps.

The procces of farming organism from the sea is ?

This is a typical grassland food web. it is also a small picture of an important cycle on earth: the carbon cycle. describe how the carbon gets into this food web. a) bacteria and fungi, the decomposers, recycle carbon from dead organisms. b) carbon is found in the grass and is passed from one level to the next in this food web. eliminate c) all living things give off carbon dioxide as a by-product of respiration and it is released into the atmosphere. d) plants use carbon dioxide as a reactant in photosynthesis, to make usable chemical energy in the form of a sugar.

Discuss cell surface transport in the structure of constituents