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...carbon dioxide. Leukocytes, or white blood cells, are involved in immune defence against infection. There are a variety of different types of leukocytes, all with distinct functions. You will learn more about these cells, and how to identify them, later on in the week. You might like to keep the virtual microscope open as you work through the week...Week 1: Histology: 2.3...

...Carbon-14, used in dating ancient materials). It is the weak force that allows the heavier quarks to decay into the lighter quarks...Week 2: Particle physics: 3.4 The strong force - The current theory of electromagnetic, weak nuclear and strong nuclear forces (but not gravity) in the world of subatomic particles is called the ‘Standard Model’. It is based on three...

...carbon. While this can sustain a star for a short period of time after the main sequence, it is less efficient than hydrogen fusion. In this process helium nuclei, also known as alpha particles (α-particles), fuse together to form heavier nuclei. What is the overall effect of this triple alpha process? Think about what goes into the reaction and what comes out. Answer...