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In Australia, Alzheimer’s disease is the most common form of dementia - VCE - SSCE Biology - Question 1 - 2012 - Paper 1
Question 1
In Australia, Alzheimer’s disease is the most common form of dementia. Alzheimer’s disease is associated with the development of a toxic protein in the brain known a... show full transcript
Worked Solution & Example Answer:In Australia, Alzheimer’s disease is the most common form of dementia - VCE - SSCE Biology - Question 1 - 2012 - Paper 1
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Step 2
Describe the main steps of the first stage of synthesis of amyloid beta-protein.
Answer
The main steps of the first stage, transcription, include the following:
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DNA Template Strand Copied: The DNA double helix unwinds, and one of the strands serves as a template.
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RNA Polymerase Involved: The enzyme RNA polymerase binds to the template strand and starts synthesizing the RNA molecule.
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Pre-mRNA Production: Pre-mRNA is produced by complementary base pairing with the template strand (A with U, and C with G).
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Processing of Pre-mRNA: Introns are removed, and a poly-A tail or methyl cap is added to form mature mRNA.