3.1+Chemical+elements+and+water

3 Chemistry of Life - 3.1 Chemical elements and water - 3.2 Carbohydrates, proteins and lipids - 3.3 DNA structure - 3.4 DNA replication - 3.5 Transcription and translation - 3.6 Enzymes - 3.7 Cell respiration - 3.8 Photosynthesis - Biochemistry Labs - DNA Labs

3.1 Chemical elements and water
How do organisms survive without water? Isn't it a vital element? Read this BBC Future article and discuss it. It has many links into other aspects of your course too.
 * Starter**


 * Assessment statements** (IBO notes added to some points to clearly indicate what needs to be understood and what does not)
 * 3.1.1 || State that the most frequently occurring chemical elements in living things are carbon, hydrogen, oxygen and nitrogen. ||
 * 3.1.2 || State that a variety of other elements are needed by living organisms, including sulfur, calcium, phosphorus, iron and sodium. ||
 * 3.1.3 || State one role for each of the elements mentioned in 3.1.2. Refer to the roles in plants, animals and prokaryotes. ||
 * 3.1.4 || Draw and label a diagram showing the structure of water molecules to show their polarity and hydrogen bond formation. ||
 * 3.1.5 || Outline the thermal, cohesive and solvent properties of water. ||
 * 3.1.6 || Explain the relationship between the properties of water and its uses in living organisms as a coolant, medium for metabolic reactions and transport medium. Limit the properties to those outlined in 3.1.5. ||

Does water have a memory? Read the BBC News article and discuss
 * Starter **

An alternative set of notes from [|i-Biology] can be found here media type="custom" key="23823704"
 * Workbooks **

Steven Taylor ( [|i-Biology] ) has a great presentation to view and take notes from before starting your notebook media type="custom" key="23823706"
 * Presentations and tutorials **

Jason De Nys also has a very good presentation to use for note development media type="custom" key="24507802"

Very good DP Bio specific video tutorials from [|C4B] 3.1.1 Common elements media type="custom" key="23823708" 3.1.2 Additional elements media type="custom" key="23823710" 3.1.3 The role of elements media type="custom" key="23823712" 3.1.4 Polarity of water media type="custom" key="23823714" 3.1.5a Thermal properties media type="custom" key="23823716" 3.1.5b Cohesion in water media type="custom" key="23823718" 3.1.5c Water as a solvent media type="custom" key="23823720"

It is important to appreciate [|how substances dissolve in water] (Northland TC) Understanding [|the properties of water] (Northland TC) is key to appreciating the processes in most topics from transpiration in plants to the formation and function of membranes in cells

Not quite sure you understand what molecules are organic and inorganic? Here's a [|quiz using examples from i-Biology]

Use teaching and visualization animations from St Olaf: > Use the [|Biostuff tutorial] to help with your understanding, their's also a quick quiz to test how much you picked up
 * The temporay nature of hydrogen bonds in water

Use [|click4biology] to review and complete your notes

Collect a personal set of notes using the BioK notes as guidance or even as a template. media type="custom" key="24136350"
 * Approach**

Other activities used to help understanding include
 * Under the Biochemistry Labs you'll find the outline to the [[file:bioknowledgy/Lab - Wonderfully Wierd Water.doc|discovery lab]] you will be carrying out
 * Answer the following two [[file:bioknowledgy/Water Questions.rtf|questions on water]] with your book closed, before peer/self-marking them
 * Improve your answers to questions on water. Now choose two or three aspects and develop a segment of a wall display to give context/examples to the property of water.

From i-Biology this [|periodic table for biologists] highlights the elements of great importance to the study of life and examples of their use
 * Useful Links **

[|Properties of biomolecules] from Biocoach doesn't match exactly what you need, but it is a nice introduction to the basics of biochemistry and introduces useful key terms

A Biologists joke on about water .... media type="custom" key="23823722"

Mitchell and Webb sketch on homeopathy media type="custom" key="23823724"

The surface tension of water demonstrated on the ISS media type="custom" key="23823726"