Dick Pirie's Podcast

12 Bio Mendelian Genetics - the monohybrid cross_1

Mendelian genetics is the process of working out probability using punnett squares. We look at where alleles come from and what they do and how you can predict the inheritance of them.

LPHS Year 12 Chemistry Quantitative Chemistry Solutions

Moles are counting numbers. Lots of chemistry happens in solutions so here we look at measuring and expressing how much substance is dissolved in a solute giving concentration.

LPHS Year 12 Chemistry Quantitative Chem Empirical Formula to Molecular Formula

How to relate emirical formula to molecluar formula and why

LPHS Year 12 Chemistry Quantitative Chemistry Empirical Formula_1

Analysis of compounds gives Percentage composition. So we look at percentage composition and then how to calculate the simplest ratio of elements.

LPHS Year 12 Chemistry Quant_3

The third class on quantitative chemistry. Analysing the analysis of the reaction between Magnesium and oxygen. Based on an experiment. Unpacking quantitative chemistry some more.

LPHS Year12 Chemistry Quant_2_stoichiometry

More on the mole and the importance of mole ratios - stoichiometry

LPHS Year12 Chemistry Quantitative_1

Introduction to quantitative chemistry - the mole

LPHS Year13 Biology DNA_5

More about DNA. DNA replication - the first pass as well as where DNA replication happens.

LPHS Year13 Biology DNA_4

Introduction to DNA at Year 13. Structure and function.

LPHS Year13 Biology DNA_4

The fourth lesson on DNA. Structure and function

LPHS Year13 Biology DNA_2

continuing the review and overview of DNA

LPHS Year13 Biology DNA_1

Review and introduction to DNA

Atomic structure continued

Year 12 Chemistry

Year 12 Chemistry

The end of an atomic structure unit - reviewing basic concepts and looking at intermolecular forces and molecular shapes

Year 13 Evolution

A high speed overview of the evolution and speciation topic for NZ Year 13 Biology

Photosynthesis and Respiration

Photosynthesis is life's way of capturing solar energy. Respiration is how living things use that energy usefully. It's very complex biochemistry. This is a brief overview of each process

Enzymes

A brief overview about enzymes. What they are and how they work. Intended for New Zealand Year 12.