The pumping of the heart involves the alternate contraction and relaxation of the chambers of the heart. The upper chambers of the heart are called

, and the lower chambers of the heart are called

.

Jury members were provided two sets of fingerprints as evidence in a homicide case. One set tested 5 markers and the other tested 10 markers. Both sets matched the defendant's profile. Which one is more reliable and why?

About how large are the everglades today?

Suppose that the botanist carried out the test cross described in parts a and b and determined that the original green-pod plant was heterozygous (gg).

Where does almost all the energy that drives life on the earth originate

What allows the trachea to stay open and bend?

The DNA in a cell's nucleus encodes proteins that are eventually targeted to every membrane and compartment in the cell, as well as proteins that are targeted for secretion from the cell.

What similarity do animals and plants share?

This is a model of a bacterial cell. What statement about the structure and function of bacterial cell parts is correct? A) DNA is contained in a primitive nucleus. B) Energy for movement is generated in the pilli.

How can the locations where ancient fossils are found be used as evidence for continental drift

Many songbirds breed in North America in the spring and summer and then migrate to Central and South America in the fall.