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a. Explain what is meant by gene regulation - VCE - SSCE Biology - Question 3 - 2007 - Paper 1
Question 3
a. Explain what is meant by gene regulation. Gene regulation refers to the processes that control the expression of genes, determining when and how much of a gene's... show full transcript
Worked Solution & Example Answer:a. Explain what is meant by gene regulation - VCE - SSCE Biology - Question 3 - 2007 - Paper 1
Step 1
Explain what is meant by gene regulation.
Answer
Gene regulation refers to the processes that control the expression of genes, determining when and how much of a gene's product is made. This regulatory mechanism ensures that the necessary genes are activated or transcribed only when required, allowing organisms to conserve energy and resources efficiently. For instance, bacteria may only produce certain proteins when specific amino acids are absent in their environment, prompting the need to synthesize them internally.
Step 2
Describe the immediate outcome when tryptophan activates pathway X.
Answer
When tryptophan activates pathway X, it acts as a feedback inhibitor. The immediate outcome is the transcription of genes related to the biosynthesis of tryptophan being suppressed. This means that the enzymes involved in this pathway are no longer produced, which results in a decreased synthesis of tryptophan, effectively regulating its levels within the cell.