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Question #47756
The Question
The principle of the Surface Area-to-Volume (SA/V) ratio acts as a critical constraint in both biotechnology and ecology. Which of the following statements correctly contrasts the optimization of the SA/V ratio in a sparged stirred-tank bioreactor with the evolutionary adaptations of mammals in polar regions?
Options
- A.
The bioreactor utilizes sparging to maximize the SA/V ratio for efficient oxygen mass transfer, whereas polar mammals evolve shorter extremities to minimize their SA/V ratio to conserve body heat.
- B.
The bioreactor utilizes a curved base to minimize the SA/V ratio for better temperature control, whereas polar mammals maximize their SA/V ratio to maintain a high basal metabolic rate.
- C.
Small mammals like shrews are common in polar regions because their high SA/V ratio allows rapid heat absorption, similar to how sparged bubbles rapidly absorb oxygen in a bioreactor.
- D.
Both systems rely on maximizing the SA/V ratio; the bioreactor uses sparging to increase oxygen availability, while polar mammals use Allen's rule adaptations to increase metabolic heat dissipation.
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Correct Answer
Step-by-Step Solution
Explanation
How the Examiner Thinks
Regulatory_Failure
Understand how NOT, EXCEPT, and logical constraints are used to manipulate exam results.
Concepts Behind This Question
Taq Polymerase|Thermal Tolerance Ranges|Population Growth Model Dynamics
Why This Question Is Tricky
Common Mistakes
Conceptual Pivot: The dual application of the Surface Area-to-Volume (SA/V) ratio across different biological disciplines.
Students often memorize 'Allen's Rule' and 'Sparged Bioreactor' in isolation.
This question forces them to apply the mathematical concept of SA/V to both an abiotic engineering goal (maximizing gas transfer) and a biotic evolutionary goal (minimizing heat loss).
A common misconception is failing to link physical dimensions (shorter limbs or smaller body size) to their direct mathematical effect on the SA/V ratio.
Quick Facts About This Question
Question Information
| Subject | Biology |
| Chapter | Biotechnology : Principles and Processes - Class 12 |
| Concept | Taq Polymerase Thermal Stability |
| Difficulty | 8 |
| Cognitive Load | 5 |
| Target Solve Time | 120 sec |
| Access | Free |