Proteins are synthesised on ____, according to a template. Carrier molecules bring specific ____ to add to the growing protein chain in the correct ____. When the protein chain is complete it ____ up to form a unique ____. This unique shape enables the proteins to do their job as ____, hormones or forming ____ in the body such as collagen. ____ occur continuously. Most do not ____ the protein, or only alter it slightly so that its appearance or function is not changed. A few mutations code for an altered protein with a ____ shape. An enzyme may no longer ____ the substrate binding site or a ____ protein may lose its strength. Not all parts of DNA ____ for proteins. Non-coding parts of DNA can ____ genes on and off, so variations in these areas of DNA may affect how genes are ____.

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