Adafruit founder Limor Fried and program manager Federico Gomez Suarez explain how …
Adafruit founder Limor Fried and program manager Federico Gomez Suarez explain how computers represent numbers, text, images, and sound using tiny electric signals.
This 14-minute video lesson provides an overview of B cells (B lymphocytes) …
This 14-minute video lesson provides an overview of B cells (B lymphocytes) and how they are activated and produce antibodies. [Biology playlist: Lesson 53 of 71].
This 9-minute video lesson looks at how CAM Plants are able to …
This 9-minute video lesson looks at how CAM Plants are able to fix carbon at night so they don't have to keep their stomata open during the day. [Biology playlist: Lesson 34 of 71].
This 10-minute video lesson discusses how cytotoxic T-Cells get activated by MHC-I/antigen …
This 10-minute video lesson discusses how cytotoxic T-Cells get activated by MHC-I/antigen complexes and then proceed to kill infected cells. [Biology playlist: Lesson 56 of 71].
This 6-minute video lesson looks at human prehistory and the human migrations …
This 6-minute video lesson looks at human prehistory and the human migrations from Africa to Asia and other parts of the world. [Biology playlist: Lesson 64 of 71
This 6-minute video looks at human prehistory through the ice age. It …
This 6-minute video looks at human prehistory through the ice age. It discusses the migrations from Asia into North and South America. [Biology playlist: Lesson 65 of 71]
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