DNA
Learn about DNA (deoxyribonucleic acid). Overview of DNA bases, complementary base pairing, and the structure of the double helix.
Learn about DNA (deoxyribonucleic acid). Overview of DNA bases, complementary base pairing, and the structure of the double helix.
This YouTube video delves into the impact that tourism can have on a country's economy.
This YouTube video delves into the impact that tourism can have on the environment.
Enzymes as catalysts for reactions in biological systems; discussion of substrates, active sites, induced fit, and activation energy.
Clarifying some points on evolution and intelligent design.
This video explains how to calculate the gradient (slope) of a straight line.
This YouTube video explains how to calculate an irregular area on a map.
This YouTube video explains how to calculate a regular area on a map.
From the extinction of the dinosaurs to humanity.
Overview of fertilisation and early human development. From conception leading to a zygote to blastocyst, embryo and fetus.