SSCE VCE Biology Scientific Investigation and Research Methods: If oxygen had not been bubbled t

If oxygen had not been bubbled through the culture after point P, it is reasonable to assume that A - VCE - SSCE Biology - Question 12 - 2003 - Paper 1

Question 12

If oxygen had not been bubbled through the culture after point P, it is reasonable to assume that A. the rate of production of carbon dioxide would have continued to... show full transcript

Worked Solution & Example Answer:If oxygen had not been bubbled through the culture after point P, it is reasonable to assume that A - VCE - SSCE Biology - Question 12 - 2003 - Paper 1

Step 1

A. the rate of production of carbon dioxide would have continued to fall.

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Answer

This option suggests that the production of carbon dioxide would keep decreasing, which contradicts the notion that not bubbling oxygen would stabilize or alter the production dynamics.

Step 2

B. the rate of production of carbon dioxide would have risen, but not as much as it did when oxygen was bubbled through.

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Answer

This choice implies an increase in production without the influence of oxygen, but lacks substantial support given the absence of oxygen generally limits metabolic processes.

Step 3

C. the rate of production of carbon dioxide would have leveled off and remained at a value similar to that at point P.

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Answer

This option is the most reasonable assumption. Without additional oxygen, the culture would stabilize at a reduced production level compared to when oxygen was present.

Step 4

D. there is insufficient data available to make a worthwhile prediction about what may have happened.

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Answer

While this option suggests uncertainty, it dismisses the context provided by understanding biological processes, making it less valid than option C.

If oxygen had not been bubbled through the culture after point P, it is reasonable to assume that A - VCE - SSCE Biology - Question 12 - 2003 - Paper 1

Worked Solution & Example Answer:If oxygen had not been bubbled through the culture after point P, it is reasonable to assume that A - VCE - SSCE Biology - Question 12 - 2003 - Paper 1

A. the rate of production of carbon dioxide would have continued to fall.

B. the rate of production of carbon dioxide would have risen, but not as much as it did when oxygen was bubbled through.

C. the rate of production of carbon dioxide would have leveled off and remained at a value similar to that at point P.

D. there is insufficient data available to make a worthwhile prediction about what may have happened.

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