Some Really Cool  Science FACTS...  that'll stretch your Mind.
The human brain is 75% water.
Stem Cells are pleuripotent or totipotent (and will make any cell type).
Food does not become radioactive when exposed to radiation.
The only reason humans need to breath oxygen is to accept electrons in the final stage of ATP synthesis in mitochondria.
There are more bacteria in and/or on the human body than cells making up the human body.
20 millions sperm per ml is the threshold for clinical infertility; (50 million sperm per ml is normal).
Most students believe that science involves a set of well known facts that can be memorized.       Students are surprised at the number of scientific theories and things that we do not know.
Exposure to cold and drafts has nothing to do with "catching" a cold;       rather it is proximity to sources of viruses and microbes.
Sometimes students are surprised to learn that water, air, and their foods are chemicals.
There is a difference in the sensation of touch and pain when tested with a sharp object.
The digestive system produces more mucus than the respiratory tract.
The length of DNA in a cell, when stretched end-to-end is over 5.0 meters (or 16.4 feet).
Five fingers is due to recessive alleles and not a dominant allele. Polydactyl (more than 5 fingers) is dominant.
© 2019 - Charles Mallery