Baker’s yeast (Saccharomyces cerevisiae) is a unicellular, eukaryotic organism - VCE - SSCE Biology - Question 2 - 2021 - Paper 1
Question 2
Baker’s yeast (Saccharomyces cerevisiae) is a unicellular, eukaryotic organism. Biologists have studied its proteome. A single yeast cell contains approximately 6000... show full transcript
Worked Solution & Example Answer:Baker’s yeast (Saccharomyces cerevisiae) is a unicellular, eukaryotic organism - VCE - SSCE Biology - Question 2 - 2021 - Paper 1
Step 1
Give one example of a type of protein within a yeast cell that may change in concentration and explain why this change is necessary.
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Answer
One example of a type of protein that may change in concentration is an enzyme. Enzymes are crucial for catalyzing metabolic reactions within the cell. If there is a change in substrate concentration, the concentration of the enzyme may increase to ensure that more reactions can occur, helping the cell to efficiently utilize available resources. Additionally, under conditions of stress, cells may need to produce more enzymes to adapt their metabolic pathways accordingly. This change is necessary for maintaining homeostasis and maximizing energy production.
Step 2
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pre-mRNA
Step 3
RNA processing
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mRNA
Step 4
translation
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polypeptide
Step 5
breakdown of protein
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