Respiration


 * __Topical Essential Questions__**

Matter releases energy when it is broken down. Matter needs energy to perform different processes. Energy is used to transform matter, matter can also store energy. All matter contains potential energy.
 * 1. What is the relationship between energy and matter?**

Energy is needed to carry on life processes, such as respiration and metabolism processes. It is also needed for the survival of living organisms.
 * 2. How is energy significant to biological systems?**

No. All life processes involve the exchange of matter. Therefore, the organism cannot survive without the exchange of matter with its environment.
 * 3. Can an organism survive without the exchange of matter with its environment?**

All matter takes up space and has mass. Matter is not a living thing, but all living organisms are made up of matter.
 * 4. Are all matters living and all living organisms made up of matter?**

No. Energy cannot be created or destroyed. A form of energy can be converted into another form of energy. E.g. When a ball is dropped from a higher place onto the ground --> Gravitational Potential Energy is converted into Kinetic energy.
 * 5. Can living organisms create and destroy energy?**

Matter cannot be created or destroyed, but it can be broken down.
 * 6. Can living organisms create and destroy matter?**

1. Living organisms release energy within the biological molecule into forms that they can use to carry out life processes. 2. Process of the release of energy is affected by external environment. 3. The structure and organisation of the respiratory system is dictated by the function that it serves. 4. Metabolic pathway is a sequence of enzyme-controlled reactions.
 * __Unit Enduring Understanding__**


 * __RESPIRATION - Catabolism (molecules are broken down) The opposite of anabolism__**

It releases energy for life processes
 * Why do we need to respire?**


 * Do the structure and organisation of the living system change when energy is released from them?**


 * How are respiratory systems of animals organised efficiently to carry out its functions?**

No! Enzymes catalyse (speeds up) reactions, by lowering the activation energy of the matter. UNDER MY UMBRELLA.
 * Can there be any metabolism without enzymes?**

GLYCOLYSIS: Can occur without oxygen.

KREB'S CYCLE:

ELECTRON TRANSPORT CHAIN: