When released, mature sperm leave the epididymis and travel through the. A) penis. B) urethra. C) scrotum. D) vas deferens.

Every chemical element goes through natural exponential decay, which means that over time its atoms fall apart.

The diploid cells that begin spermatogenesis are called spermatogonia. Where are spermatogonia found?

Pyrimidines are synthesized through a long series of reactions beginning with the amino acid aspartate.

Global climate has changed many times throughout Earth's long history. What kinds of changes to ecosystems have been caused by the changing climate? A. only minimal, temporary changes to ecosystems B.

Check your knowledge of the in-hospital adult chain of survival by answering this question. After surveillance, prevention, and treatment of prearrest conditions, what is the next link in the adult chain of survival?

Blood is a complex body fluid. If a vial of blood is drawn for a blood test and is allowed to sit in a rack for some time, the red blood cells will settle out and drift to the bottom of the tube.

Which is the best action to take during an earthquake: If outdoors, seek the shelter of a sturdy building B:If inside, seek protection from windows and hanging objects. C:If in a car, drive as quickly as possible away from the epicenter of the quake.

A Researcher preformed an experiment in which he exposed young corn plants to a harmless, radioactive form of carbon dioxide gas containing-14 instead of carbon-12. He then began feeding corn produced by the plants to a small group of goats.

Which type of crystal system is also known as a cubic, includes diamonds, and has three axes of symmetry that are at right angles to eachother?

Where are the club-shaped basidia of a mushroom formed?