Khan Academy: 2757 products
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 …
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Chemistry: Oxidizing and reducing agents
How to identify the oxidizing and reducing agents. Chemistry Did you know that everything is made out of chemicals? Chemistry is the study …
VideoFree9 minutes
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Biology: Photoperiodism
How plants can regulate processes like flowering based on day length (photoperiod). Biology Life is beautiful! From atoms to cells, from ge…
VideoFree8 minutes
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Biology: Polymerase chain reaction (PCR)
Introduction to PCR (polymerase chain reaction). Biology Life is beautiful! From atoms to cells, from genes to proteins, from populations t…
VideoFree10 minutes
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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 …
VideoFree5 minutes
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Biology: Applying the Hardy-Weinberg equation
Using the Hardy-Weinberg equation to calculate allele and genotype frequencies. Biology Life is beautiful! From atoms to cells, from genes …
VideoFree6 minutes
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High school biology: Meet the heart!
Find out exactly where the heart rests in your body and what it does. Rishi is a pediatric infectious disease physician and works at Khan A…
VideoFree10 minutes
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High school biology: Impact of mutations on translation into amino acids
Using an amino acid translation table to understand the impact of point and frameshift mutations. High school biology DNA replication and p…
VideoFree9
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Biology: Biodiversity flourishes in Phanerozoic eon
Cambrian explosion and biodiversity in the Phanerozoic Eon Biology Life is beautiful! From atoms to cells, from genes to proteins, from pop…
VideoFree10 minutes
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Biology: Interactions between populations
Learn about the many types of interspecific interactions: competition, predation, herbivory, symbiosis, parasitism, mutualism, commensalism…
VideoFree8 minutes
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Biology: Hydrocarbon overview
Hydrocarbon overview. Biology Life is beautiful! From atoms to cells, from genes to proteins, from populations to ecosystems, biology is th…
VideoFree8 minutes
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Biology: Carbon 14 dating 1
Carbon 14 Dating 1 Biology Life is beautiful! From atoms to cells, from genes to proteins, from populations to ecosystems, biology is the s…
VideoFree10 minutes
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Biology: Competitive inhibition
Seeing how an inhibitor can "compete" for an enzyme with the intended substrate. Biology Life is beautiful! From atoms to cells, from genes…
VideoFree7 minutes
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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…
VideoFree10 minutes
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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…
VideoFree6 minutes
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Organic chemistry: Newman projection practice 2
How to determine the most and least stable conformations using Newman projections Organic chemistry Sal and Jay cover topics covered in col…
VideoFree11 minutes