Sperm cells are so tiny that 400 to 500 million (400,000,000–500,000,000) of them fit onto 1 tsp.
Did you know?
This year, an estimated 1.4 million Americans will have a new or recurrent heart attack.
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Cancer has been around as long as humankind, but only in the second half of the twentieth century did the number of cancer cases explode.
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Patients who have been on total parenteral nutrition for more than a few days may need to have foods gradually reintroduced to give the digestive tract time to start working again.
Did you know?
If you could remove all of your skin, it would weigh up to 5 pounds.
Reaction coordinate diagram comparing enzyme-catalyzed and uncatalyzed reactions
Enzyme polymorphism
Principles of amplification of selected fragments of DNA by polymerase chain reaction cycling.
Subunit structure of the E. coli DNA polymerase III holoenzyme
Initiation and elongation steps of transcription by bacterial RNA polymerase