Blog

The nitrogenous waste product that uses the least energy to produce is _________, whereas the nitrogenous waste product that is least toxic is ________________.

Which of the following taxa of terrestrial vertebrate organisms has members that have evolved salt glands?

What are the two major concerns for organisms living in freshwater?

In which of the following organisms would you expect to find the most juxtamedullary nephrons?

In humans, the nitrogen in nucleic acid purines is metabolized to become _____________, while amino acids are metabolized to become _______________.

Pick one (1) of the following questions to answer.  Please make sure you indicate which one you are answering.  Each answer should give details to the extent that we covered in class.  This is worth four (4) points. A.  Using proper anatomical terms, please explain the path an electrical impulse takes when creating a contraction of the heart. B.  Explain what would happen to animal cells (in particular, human red blood cells) when placed in different salinities of water. Please use the terms for solutions of different relative salinities as you answer. C.  List four of the five categories of substances that are reabsorbed in the proximal convoluted tubule of the kidneys.

In class, we discussed many of the things that the circulatory system does, in terms of physiology. Which one of the following was NOT included in that list?

Saltwater osmoregulators must do which of the following in order to maintain homeostasis?

Which of the following is NOT a manner in which freshwater osmoregulators lose solutes?

Which part of a nephron is responsible for actively pumping Na+, K+, and Cl- into the interstitial fluid of the medulla, thereby causing their reabsorption?