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Learn about how cells sense and respond to extrinsic stimuli, a capacity that allows them to communicate with each other and to respond to changes in their environment. This free course, General principles of cellular communication, explains cell signalling pathways in general terms and identifies some of the universal characteristics of signalling pathway

...Learning outcomes - After studying this course, you should be able to: with simple ratios convert between fractions, decimals and percentages explain the meaning of ratio, proportion and percentage find percentages of different quantities calculate percentage increases and decreases...Ratio, proportion and percentages: 1.1 Introduction - Ratios crop up often in official...

...Learning outcomes - After studying this course, you should be able to: Understand anxiety and depression from biopsychosocial perspectives Discuss contemporary issues in mental health science related to anxiety and depression Recognise different lines of evidence and appreciate the uncertainty, ambiguity and limits of current knowledge in the study of mental health...

...learn how the molecular structure of aspirin has been formulated to help in this process...What causes pain and how do we stop it? This free course, Pain and Aspirin, looks at how the human body responds to the release of certain chemicals and as a result feels pain. Pain can be reduced by inhibiting the formation of such chemicals and you will learn how the molecular...