Khan Academy: 2757 producten
Khan Academy is an organization on a mission. We're a not-for-profit with the goal of changing education for the better by providing a free world-class education for anyone anywhere.
All of the site's resources are available to anyone. It doesn't matter if you are a student, teacher, home-schooler, principal, adult returning to the classroom after 20 years, or a friendly alien just trying to get …
check_box_outline_blank
High school biology: Urination
High school biology The digestive and excretory systems Topic: Science Learn about all the sciences, from physics, chemistry and biology, t…
VideoGratis10 minuten
check_box_outline_blank
Biology: Myosin and actin
How myosin and actin interact to produce mechanical force. Biology Life is beautiful! From atoms to cells, from genes to proteins, from pop…
VideoGratis10 minuten
check_box_outline_blank
Organic chemistry: Stereoisomers, enantiomers, and chirality centers
The definition of stereoisomers, enantiomers, and chirality centers. How to calculate the number of possible stereoisomers for a structure …
VideoGratis5 minuten
check_box_outline_blank
Biology: Photoperiodism
How plants can regulate processes like flowering based on day length (photoperiod). Biology Life is beautiful! From atoms to cells, from ge…
VideoGratis8 minuten
check_box_outline_blank
Biology: Molecular structure of RNA
Molecular structure of RNA. Biology Life is beautiful! From atoms to cells, from genes to proteins, from populations to ecosystems, biology…
VideoGratis12 minuten
check_box_outline_blank
Biology: Plant cell walls
Understanding the structure of plant cell walls. Biology Life is beautiful! From atoms to cells, from genes to proteins, from populations t…
VideoGratis8 minuten
check_box_outline_blank
Biology: Ozone layer and eukaryotes show up in the Proterozoic eon
Ozone layer and eukaryotes show up in the Proterozoic eon. Great oxygenation event (oxygen catastrophe). Biology Life is beautiful! From at…
VideoGratis10 minuten
check_box_outline_blank
Biology: Origins of life
An overview of the question of how life first arose on Earth. Biology Life is beautiful! From atoms to cells, from genes to proteins, from …
VideoGratis11 minuten
check_box_outline_blank
Biology: Viruses
Introduction to viruses. Biology Life is beautiful! From atoms to cells, from genes to proteins, from populations to ecosystems, biology is…
VideoGratis23 minuten
check_box_outline_blank
Biology: Lac operon
Overview of gene regulation in the Lac operon. Discussion of CAP, cAMP, lac repressor and allolactose in regulation of lac operon. Biology …
VideoGratis11 minuten
check_box_outline_blank
Biology: Heredity
Hank and his brother John discuss heredity via the gross example of relative ear wax moistness. Biology Life is beautiful! From atoms to ce…
VideoGratis10 minuten
check_box_outline_blank
Cosmology and astronomy: Refraction of seismic waves
Refraction of Seismic Waves Cosmology and astronomy It's a great, big universe out there. In this section of Khan Academy, you'll learn abo…
VideoGratis9 minuten
check_box_outline_blank
Cosmology and astronomy: Lifecycle of massive stars
Lifecycle of Massive Stars Cosmology and astronomy It's a great, big universe out there. In this section of Khan Academy, you'll learn abou…
VideoGratis7 minuten
check_box_outline_blank
Biology: Speciation: Of ligers & men
Hank explains speciation - the evolutionary process by which new biological species arise - in terms of finches, ligers, mules, and dogs. B…
VideoGratis10 minuten
check_box_outline_blank
Biology: Diffusion - Introduction
Learn about how particles move from an area of greater concentration to an area of lesser concentration through the process of diffusion. B…
VideoGratis6 minuten