1.The range of temperatures compatible with life is about 0°C to 40°C. Endotherm

Question

1.The range of temperatures compatible with life is about 0°C to 40°C. Endotherms have regulated body temperatures much closer to the upper limit of this range than to the lower limit. What are the advantages of living close to the upper limit?

2. Your text states, “thermogenin uncouples proton movement from ATP production.” Explain that statement.

3.In some epithelial tissues there are “tight junction” between the individual cells that prevent anything from passing between them; in other cases the junctions between cells are quite loose. What are the possible advantages in different organs of loose versus tight junctions? Give one example in which these differences would be important.

Thanks!

Explanation / Answer

1: Higher temperatures coincide with higher metabolism allowing increased physical activity within lower ambient temperatures. Smaller animals usually fall into this category and the higher temperature/metabolism is necessary for thermoregulation.

2: This is usually related to brown fat and allows metabolic fuels to be consumed releasing heat without producing ATP. I'm not good at explaIning this in greater detail, but it's got something to do with h+ in the cellular metabolic chain.

3: Hmmm. More than I really want to type, but look up: "leaky gut". Loosening of tight cells can be fatal, as well as tightening of normally loose cells.

Related Questions

Navigate

• Browse (All)
• Browse 1
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.