In multicellular organisms, cells have receptors for death-signalling molecules - VCE - SSCE Biology - Question 12 - 2013 - Paper 1
Question 12
In multicellular organisms, cells have receptors for death-signalling molecules. These death-signalling molecules play a role in apoptosis.
The death-signalling mol... show full transcript
Worked Solution & Example Answer:In multicellular organisms, cells have receptors for death-signalling molecules - VCE - SSCE Biology - Question 12 - 2013 - Paper 1
Step 1
A. allow for tumour formation.
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Answer
This option is incorrect. Death-signalling molecules do not promote tumor formation; instead, they help eliminate unwanted cells.
Step 2
B. act by decreasing the rate of mitosis.
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Answer
This option is also incorrect. Death-signalling molecules do not primarily function by reducing mitosis; they are involved in triggering cell death.
Step 3
C. initiate a response causing a cell to swell and burst.
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Answer
While this option describes a cellular response, it does not accurately reflect the primary function of death-signalling molecules in apoptosis.
Step 4
D. result in destruction of cells that are no longer required.
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Answer
This is the correct answer. Death-signalling molecules function to signal cells for destruction in processes like apoptosis, ensuring that cells that are no longer needed are efficiently removed from the organism.
