WINGஃ 發問於 社會及文化語言 · 1 十年前


In nervous and endocrine systems, coordination includes reception of stimulus, integration and response. Compare and contrast the coordination mechanisms involved in thermoregulation and lactation.

Both chloroplast and mitochondrion are important organelles for handling energy transformation. Explain how the structural similarities of the two organelles contribute to efficient energy transformation. Contrast the nature of energy transformation processes in these two organelles.

In the arctic region, animal species A and B require the same type of shelter for hibernation. However, the number of shelters available id limited. The shelter-seeking behavior of species A is triggered by the shortening o daylight hours, while that of species Bid triggered by prolonged cold weather below a certain temperature. Explain how global warming would affect the population sizes of A and B.

Hair length in a king of arctic dog exhibits continuous variation. With reference to the concept of natural selection, suggest the long term effect of global warming on the mean hair length of the arctic dog.

In the summer. Terry went jogging and swimming on alternate days. Both exercises were done at the same intensity. He noticed that volume of urine produced after jogging was less that that after swimming. Account for this difference based on the processes of heat dissipation and osmoregulation involved.

In the elderly, knee joints degenerate and the secretion of synovial fluid decreases. This results in knee pain when they walk. Account for the phenomenon in relation to the structure and functioning of the keen joints.

Explain why a breakfast rich in cereals is preferable to a breakfast rich in meat for a person who is going to jog for a long distance after a few hours.

2 個解答

  • 1 十年前



    在北極地區,動物物種 A和B需要相同類型的住房冬眠。但是,現有住房的數量有限的id。該庇護尋求一個物種的行為所引發的是縮短 Ø白天,而物種申辦寒冷天氣所引發的長期低於某一溫度。如何解釋全球變暖會影響人口規模的A和B





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    1 十年前