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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.

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.

This video explains how to solve inequalities.

How variation can be introduced into a species.

Managing time involves accurately predicting how much time it will take to do a task, and then setting aside that amount of time to complete it. Managing time is much more difficult than it may seem, which is why there are entire courses of study and research on the best approaches. But if you develop a method to undertake each component, you’ll be successful.

Diffusion and Osmosis

Mitosis is how cells divide! Learn what happens in all the phases of mitosis: prophase, metaphase, anaphase, and telophase.

Molecular structure of DNA. Nucleotide. Nitrogenous base, phosphate.