2.2+Water

=**MOLECULAR BIOLOGY 2.2- 2 hours**= • Water molecules are polar and hydrogen bonds form between them. • Hydrogen bonding and dipolarity explain the cohesive, adhesive, thermal and solvent properties of water. • Substances can be hydrophilic or hydrophobic. || • Application: Comparison of the thermal properties of water with those of methane. • Application: Use of water as a coolant in sweat. • Application: Modes of transport of glucose, amino acids, cholesterol, fats, oxygen and sodium chloride in blood in relation to their solubility in water. || • Students should know at least one example of a benefit to living organisms of each property of water. • Transparency of water and maximum density at 4°C do not need to be included. • Comparison of the thermal properties of water and methane assists in the understanding of the significance of hydrogen bonding in water. || • There are challenges for the increasing human population in sharing water resources equitably for drinking and irrigation, electricity generation and a range of industrial and domestic processes. || • Claims about the “memory of water” have been categorized as pseudoscientific. What are the criteria that can be used to distinguish scientific claims from pseudoscientific claims? || • **Aim 6: **Probes can be used to determine the effect of different factors likely to influence cooling with water. || Here is the powerpoint on this topic: media type="custom" key="29312811"
 * **Essential idea **: Water is the medium of life. ||
 * **<span style="color: #000000; font-family: 'MyriadPro-Bold','sans-serif'; font-size: 12.6667px;">Nature of science: **<span style="color: #000000; font-family: 'MyriadPro-Regular','sans-serif'; font-size: 12.6667px;">Use theories to explain natural phenomena—the theory that hydrogen bonds form between water molecules explains the properties of water. (2.2) ||
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 * **<span style="color: #000000; font-family: 'MyriadPro-Bold','sans-serif'; font-size: 12.6667px;">International-mindedness: **
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Below is a helpful video on water and its properties:

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