« previous next »
« previous next »
 

Did you know?

Today, nearly 8 out of 10 pregnant women living with HIV (about 1.1 million), receive antiretrovirals.

Did you know?

Blood is approximately twice as thick as water because of the cells and other components found in it.

Did you know?

Every 10 seconds, a person in the United States goes to the emergency room complaining of head pain. About 1.2 million visits are for acute migraine attacks.

Did you know?

More than 150,000 Americans killed by cardiovascular disease are younger than the age of 65 years.

Did you know?

IgA antibodies protect body surfaces exposed to outside foreign substances. IgG antibodies are found in all body fluids. IgM antibodies are the first type of antibody made in response to an infection. IgE antibody levels are often high in people with allergies. IgD antibodies are found in tissues lining the abdomen and chest.

Effects of introduced parasites on American chestnut trees. Effects of introduced parasites on American chestnut trees.
Early in the twentieth century, when malnutrition was common, companies such as this one advertised Early in the twentieth century, when malnutrition was common, companies such as this one advertised
Fight BAC Fight BAC
“Fight or Flight” Response “Fight or Flight” Response
If 0.40 mol of NaN3 reacts completely in the reaction shown below, then ________ L of N2 will ... If 0.40 mol of NaN3 reacts completely in the reaction shown below, then ________ L of N2 will ...
Sympathetic Nervous System's Flight or Fight Response Sympathetic Nervous System's Flight or Fight Response
Video: Fermentation - When Oxygen Is Absent, Pyruvate to Lactate & Pyruvate to Ethanol

For a complete list of videos, visit our video library