The first ten amendments to the US Constitution are known as the …
The first ten amendments to the US Constitution are known as the "Bill of Rights." These amendments protect individual liberties and limit the power of the federal government.
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].
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