作者han850285 (Han)
看板NTUBST94
標題Re: 生物答案
時間Sun Oct 16 08:18:48 2005
※ 引述《Akwong ( 沒差 xDDD)》之銘言:
: 給大家參考參考
: Q 細胞質流向有一定方向嗎??...
: A 因為相鄰的細胞它的細胞質流方向都會相反,這樣在靠在一起的地方就會同方向,
: 就像是兩個咬和的齒輪轉的方向會不一樣,這樣可以減少摩擦,比較節省能量,
: 而且交換物質的時間也比較夠。
: Q Cytoplasmic streaming有啥意義 :
: A It vigorously "stirs" these components about the cytoplasm.
: As membrane-bound organelles crawl along the inner cell wall they set
: the cytoplasm into motion. This streaming allows other organelles
: and nutrients to flow in the stream created. This allows the components
: of the cell to flow around the cell and balance the amount of nutrients
: that exist in different parts of the cell providing nutrients and enzymes,
: as well as a means of motion for unicellular eukaryotes, like amoeba.
為了不要有怪怪的中文出現...我就翻重點好了...
細胞質迴流能夠讓胞器和營養物在細胞質內流轉,所以能夠讓細胞的營養物、
酵素的含量,處在一種平衡的狀態。
但我個人認為,對植物最重要的差別,在於能夠讓每個葉綠體都有最大吸收光能的效應。
: Q ergastic有哪些!? 存在於哪裡
: Ergastic substances are non-protoplasm materials found in cells.
: The living protoplasm of a cell is sometimes called the bioplasm
: and distinct from the ergastic substances of the cell.
: The latter are usually organic or inorganic substances that are products
: of metabolism, and include crystals, oil drops, gums, tannins, resins
: and other compounds that can aid the organism in defense,
: maintenance of cellular structure, or just substance storage.
: During the lifetime of a cell, these can appear and disappear,
: indicating some level of participation in life processes.
: Ergastic substances may appear in the protoplasm, in vacuoles,
: or in the cell wall.
後生物質大部分都是生成於新成代謝的有機或是非有機的物質,包含了結晶體、油滴
、黏膜、單寧、數脂和其他的可以幫助防禦自身、維持細胞結構或者儲存物質的東西。
在細胞的一生之中,這些東西能夠出現或消失,他們會出現在細胞質、液胞、細胞壁
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