« previous next »
« previous next »
 

Did you know?

There are more nerve cells in one human brain than there are stars in the Milky Way.

Did you know?

According to the CDC, approximately 31.7% of the U.S. population has high low-density lipoprotein (LDL) or "bad cholesterol" levels.

Did you know?

Hyperthyroidism leads to an increased rate of metabolism and affects about 1% of women but only 0.1% of men. For most people, this increased metabolic rate causes the thyroid gland to become enlarged (known as a goiter).

Did you know?

Egg cells are about the size of a grain of sand. They are formed inside of a female's ovaries before she is even born.

Did you know?

The liver is the only organ that has the ability to regenerate itself after certain types of damage. As much as 25% of the liver can be removed, and it will still regenerate back to its original shape and size. However, the liver cannot regenerate after severe damage caused by alcohol.

Identify the structures shown below by filling in the blanks. Identify the structures shown below by filling in the blanks.
Frederic Edwin Church conveyed the romantic sensibility in Twilight in the Wilderness (1860). The cl Frederic Edwin Church conveyed the romantic sensibility in Twilight in the Wilderness (1860). The cl
In addition to common schools, thousands of female seminaries were built between 1820 and 1850, many In addition to common schools, thousands of female seminaries were built between 1820 and 1850, many
Comparison of DNA polymerase structures with primer and template bound Comparison of DNA polymerase structures with primer and template bound
RNA polymerase subunit structures in the three domains of life RNA polymerase subunit structures in the three domains of life
Structures of the neck Structures of the neck
Video: The Pressure Flow Model in a Plant

For a complete list of videos, visit our video library