Khan Academy
Khan Academy: Apoptosis
Resource explains apoptosis (programmed cell death) and how it is different from necrosis (cell death due to injury).
Khan Academy
Khan Academy: Mendel and His Peas
Discover how Gregor Mendel uncovered the key principles of inheritance using a simple, familiar system: the pea plant. Learn about Mendel's life, his experiments, and his legacy.
Khan Academy
Khan Academy: The Law of Segregation
Resource provides a discussion of Mendel's law of segregation with a focus on genotype, phenotype, alleles, heterozygous/homozygous, and 2 x 2 Punnett squares.
Khan Academy
Khan Academy: The Law of Independent Assortment
Article defines Mendel's law of independent assortment, provides examples, and takes a look at how it is used to make predictions. Also, discusses dihybrid crosses and 4 x 4 Punnett squares.
Khan Academy
Khan Academy: Probabilities in Genetics
Article reviews some probability basics then investigates how these calculations can be applied to genetics problems involving relatively large numbers of genes. Explores how the sum rule and the product rule can be used to solve these...
Khan Academy
Khan Academy: Variations on Mendel's Laws (Overview)
Article reviews Mendel's basic model of inheritance then provides an overview of variations on Mendel's laws, including multiple alleles, incomplete dominance, co-dominance, pleiotropy, lethal alleles, sex linkage, genetic interactions,...
Khan Academy
Khan Academy: Multiple Alleles, Incomplete Dominance, and Codominance
In the real world, genes often come in many versions (alleles). Alleles aren't always fully dominant or recessive to one another, but may instead display codominance or incomplete dominance.
Khan Academy
Khan Academy: X Linked Inheritance
Find out about the chromosomal basis of sex determination, X and Y chromosomes, and X-linkage.
Khan Academy
Khan Academy: Molecular Mechanism of Dna Replication
Learn the roles of DNA polymerases and other replication enzymes. Understand the leading and lagging strands and Okazaki fragments.
Khan Academy
Khan Academy: The Genetic Code
Learn how genetic code links groups of nucleotides in an mRNA to amino acids in a protein. Also learn about start codons, stop codons, and reading frame.
Khan Academy
Khan Academy: Apoptosis
Learn about programmed cell death and how it is different from necrosis, cell death due to injury.
Khan Academy
Khan Academy: Intro to Viruses
Find out what a virus is, and learn about the structure of a virus and how it infects a cell.
Khan Academy
Khan Academy: Bacteriophages
Learn about bacteria-infecting viruses, including the lytic and lysogenic cycles.
Khan Academy
Khan Academy: Secondary Fronts of Wwi
Check your understanding of the course of WWI specifically in Serbia and Italy. This is a five question self-correcting quiz.
Khan Academy
Khan Academy: Eastern and Western Fronts of Wwi
Test your knowledge of the military strategy of the Eastern and Western fronts in WWI. This is a five question self-correcting quiz.
Khan Academy
Khan Academy: Wilson's War Message to Congress April 2, 1917
Read the full text of the speech Woodrow Wilson gave to Congress asking to declare war on Germany and enter WWI.
Khan Academy
Khan Academy: 1917 Speech by Senator Norris in Opposition to American Entry
Read the full text of the speech by Senator Norris explaining the reasons some of the population opposed declaring war on Germany and entering WWI.
Khan Academy
Khan Academy: Wwi Blockades and America
Test your knowledge of events leading to the U.S. declaring war on Germany. This is a five question self-correcting quiz.
Khan Academy
Khan Academy: The Middle East During and After Wwi
Test your knowledge of the Middle East during WWI with this five question self-correcting quiz from Khan Academy.
Khan Academy
Khan Academy: Ancient Egypt, an Introduction
Get acquainted with Ancient Egypt through this overview that summarizes key characteristics of Ancient Egypt. A concise explanation of the dynasties, geography, and pharaohs are included. Research further using the bibliography and...
Khan Academy
Khan Academy: Egyptian Art
Art is usually meant to be seen and cherished, however, Egyptian art was never meant to be seen. The artwork in Egypt was to benefit the deceased. This site shows examples of Egyptian art and details the main characteristics of their...
Khan Academy
Khan Academy: Materials and Techniques
Ancient Egyptians used a wide variety of techniques to make their unparalleled artwork. Stone, paint, wood, metal, relief sculpture, and pigments are described with pictures. A question/answer section from the community is also included.
Khan Academy
Khan Academy: Palette of King Narmer
The Palette of King Narmer is so precious it is never allowed to leave the country. This source brings it into your classroom in the form of vibrant pictures and descriptions. The different theories about what the pictures on the palette...
Khan Academy
Khan Academy: The Great Pyramids of Giza
The great pyramids at Giza are one of the Seven Wonders of the ancient world. Learn the role the sun played in the construction of the pyramids. Included is a map of where the pyramids are located in Giza, a bibliography for further...