Cette leçon contient 10 diapositives, avec quiz interactif et diapositives de texte.
Éléments de cette leçon
Haemoglobin: The Oxygen Carrier
Slide 1 - Diapositive
Cet élément n'a pas d'instructions
Learning Objective
At the end of the lesson, you will be able to explain the quaternary structure of haemoglobin and its role in loading, transporting, and unloading oxygen, as well as the cooperative nature of oxygen binding.
Slide 2 - Diapositive
Introduce the learning objective and remind students of the importance of understanding haemoglobin's role in oxygen transport.
What do you already know about haemoglobin and its role in transporting oxygen?
Slide 3 - Carte mentale
Cet élément n'a pas d'instructions
Introduction
Haemoglobin is a protein found in red blood cells that binds to oxygen and transports it throughout the body. It is made up of four subunits, each containing a heme group.
Slide 4 - Diapositive
Introduce haemoglobin and its basic structure. Explain that the heme group is essential for oxygen binding.
Quaternary Structure
The quaternary structure of haemoglobin refers to the way in which the four subunits are arranged. They can be in either a tense state or a relaxed state, depending on whether or not they are bound to oxygen.
Slide 5 - Diapositive
Explain the concept of quaternary structure and how it relates to haemoglobin's ability to bind to oxygen.
Loading Oxygen
In the lungs, haemoglobin binds to oxygen to form oxyhaemoglobin. This is made possible by the presence of iron in the heme group, which can form a reversible bond with oxygen.
Slide 6 - Diapositive
Explain the process of loading oxygen onto haemoglobin in the lungs.
Transporting Oxygen
Once loaded with oxygen, haemoglobin travels through the bloodstream to deliver oxygen to the body's tissues. This is essential for cellular respiration and energy production.
Slide 7 - Diapositive
Explain how haemoglobin transports oxygen throughout the body.
Unloading Oxygen
In the body's tissues, haemoglobin releases oxygen to the cells that need it. This is facilitated by the cooperative nature of oxygen binding, in which the binding of the first oxygen molecule makes the binding of subsequent molecules easier.
Slide 8 - Diapositive
Explain the process of unloading oxygen from haemoglobin and how cooperative binding plays a role.
Interactive Element
Have students work in groups to create a diagram or model of haemoglobin and its role in oxygen transport.
Slide 9 - Diapositive
Provide materials and instructions for the interactive element, and allow time for students to work on it.
Conclusion
Haemoglobin is a crucial protein in the body that plays a vital role in the transport of oxygen. Its quaternary structure and cooperative nature of oxygen binding allow it to efficiently load, transport, and unload oxygen throughout the body.
Slide 10 - Diapositive
Summarize the key points of the lesson and emphasize the importance of haemoglobin in oxygen transport.