Energy

This video discusses the function of the respiratory system and it's role in respiration. Students will learn about the structure and function of the respiratory system. In addition, this video will go over the role of breathing, gas exchange and cellular respiration in the production of energy in the human body.

This lesson will explain energy transfers in an ecosystem by looking at food webs, food chains and energy pyramids.

This Earth Science video goes over the different types of energy transfer in the Earth's atmosphere. They include convection, conduction and radiation.

Craig Beals explains how ATP and ADP cycle during Photosynthesis. The following are examined: ATP, ADP, Chlorophyll, Chemical Energy, Cells, Phosphate groups, etc. To download of copy of the handout / worksheet go to: http://www.bealsscience.com/biology-help

This video goes over the difference between producers and consumers. It will cover photosynthesis and chemosynthesis. In addition, this video discusses the differences between the four types of consumers, herbivores, carnivores, omnivores and decomposers.

This lesson discuses the minimum energy that must be put into a chemical system.What happens when a reactant goes to a product, the activation energy that passes to get from the reactant to the product. What a catalyst does, how it decreases. An explanation of how enzymes are large proteins made up of polypeptide chains. What vitamins function as coenzymes and how it helps the enzyme increase rate of reaction. What happens when heat enzymes come into play and what blocks enzymes.

This video shows an animation of photosynthesis and respiration reactions, and how these two are connected in the biological world. It explores the energy relationships between them, and shows how photosynthesis is an endothermic reaction, respiration is exothermic. The value of plants' ability to photosynthesise is emphasised.