（翻译）Controls over the enzymes of different pathways all--高校试题库-www.gxtiku.com

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ID：9406-6636

（翻译）Controls over the enzymes of different pathways allow cells to direct the flow of nutrients, building materials, waste products, hormones, and so on in suitable ways. When you eat too much sugar, enzymes in your liver cells act on the excess, converting it first to glucose and then to glycogen or fat. When your body uses up glucose and needs more, enzymes break down glycogen to release its glucose subunits. In this case, a hormone called glucagon(胰高血糖素) acts as a control over enzyme activity. It stimulates the key enzyme in the pathway by which glycogen is degraded, and it inhibits the enzyme that catalyzes glycogen formation.

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ID：9406-6803
Fungal mitosis, unlike mitosis in all other organism, occurs within the nucleus.( )

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ID：9406-6817

（翻译）All fungi carry out extracellular digestion: they secrete enzymes that digest organic matter, and then they absorb the resulting nutrients.

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ID：9406-6632

（翻译）自然界存在成千上万种微生物，但目前只有相当少数得到了开发利用。

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ID：9406-6820
（翻译）Just as competition, predation, and other elements interact to determine the size of a population within a community, population distribution is the result of many interrelated factors.

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ID：9406-6628

（翻译）The establishment of L-glutamic acid fermentation provided a significant impetus to the development of microbial production of primary metabolites. Encouraged by the establishment of the L-glutamic acid fermentation, various research projects have been carried out in the attempt to isolate wild strains or derive genetic mutants producing various kinds of amino acids. As a result, almost all of the amino acids are now commercially produced by fermentation.

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