« previous next »
« previous next »
 

Did you know?

The first successful kidney transplant was performed in 1954 and occurred in Boston. A kidney from an identical twin was transplanted into his dying brother's body and was not rejected because it did not appear foreign to his body.

Did you know?

In ancient Rome, many of the richer people in the population had lead-induced gout. The reason for this is unclear. Lead poisoning has also been linked to madness.

Did you know?

The ratio of hydrogen atoms to oxygen in water (H2O) is 2:1.

Did you know?

The human body produces and destroys 15 million blood cells every second.

Did you know?

Nearly 31 million adults in America have a total cholesterol level that is more than 240 mg per dL.

Positron emission tomography (PET) image showing the difference in the metabolic activity of the bra Positron emission tomography (PET) image showing the difference in the metabolic activity of the bra
The 31 pairs of spinal nerves. The 31 pairs of spinal nerves.
The Haploid Number of Chromosomes for a Variety of Organisms The Haploid Number of Chromosomes for a Variety of Organisms
Anaphase Centromeres split and daughter chromosomes migrate to opposite poles Anaphase Centromeres split and daughter chromosomes migrate to opposite poles
An organism has alleles R1 and R2 on one pair of homologous chromosomes, and it has alleles T1 ... An organism has alleles R1 and R2 on one pair of homologous chromosomes, and it has alleles T1 ...
Ball-and-stick models of A=T and G≡C base pairs Ball-and-stick models of A=T and G≡C base pairs
Video: Secondary Active Transport

For a complete list of videos, visit our video library