A bacterium thrives in a hot spring at 80°C. Which adaptation is MOST likely present in its cytoplasmic membrane?
Understand the Problem
The question is asking about the adaptations of a bacterium that thrives in a hot spring at 80°C, specifically focusing on the likely adaptation present in its cytoplasmic membrane. We need to identify which of the given options is most probable for maintaining membrane stability and function at such a high temperature.
Answer
High proportion of saturated fatty acids to maintain membrane stability.
The cytoplasmic membrane of a bacterium thriving in hot springs at 80°C is most likely to have a high proportion of saturated fatty acids. These help maintain membrane stability at high temperatures.
Answer for screen readers
The cytoplasmic membrane of a bacterium thriving in hot springs at 80°C is most likely to have a high proportion of saturated fatty acids. These help maintain membrane stability at high temperatures.
More Information
Bacteria that thrive in high temperatures, known as thermophiles or hyperthermophiles, have adaptations to maintain the integrity and function of their cell membranes. A key adaptation is the presence of a high proportion of saturated fatty acids in their cytoplasmic membranes. Saturated fatty acids are more stable at high temperatures compared to unsaturated fatty acids.
Tips
A common mistake is to think about adaptations related to enzymes only, but membrane stability is crucial for survival.
Sources
- Adaptations of archaeal and bacterial membranes to variations in ... - pmc.ncbi.nlm.nih.gov
- Hyperthermophile - Wikipedia - en.wikipedia.org
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