| 1. | This mechanism sometimes leads to an interference between groups of organisms .
这种机理有时引起生物群体之间的相互干扰。 |
| 2. | Soil micro-organisms constitute a diverse and ubiquitous group of organisms .
土壤微生物是由完全不同的和无孔不入的有机体类群所组成。 |
| 3. | One definition of a species is a group of organisms whose members can breed with each other but not with outsiders
对物种的一种定义是：有这样一组生物体，其成员相互交配与不与外界生物体进行交配。 |
| 4. | Groups of organisms that are genetically unrelated to the known life on earth might exist unrecognized right under our noses
好些在遗传学上与地球上已知的生命毫无关联的生物体，说不定就近在你我眼前，而我们却毫不知情。 |
| 5. | （ a species may be defined as a group of organisms of interbreeding natural populations that are reproductively isolated from other groups and that share in common gene pools
物种是生物界发展的连续性与间断性统一的基本间断形式；在有性生物物种呈现为统一的繁殖群体，由占有一定空间，具有实际或潜在繁殖能力的种群所组成，而且与其他这样的群体在生殖上是隔离的。 |
| 6. | - acetolactate decarboxylase are widely found among bacterial strains but not in other groups of organisms . the enzyme has been demonstrated to be effective for removal of acetolactate and widely used in beer product . in this paper , - acetolactate decarboxylase from bacillus subtilis was purifed to homogeneity from cell extract by ammonium sulfate - fractionation , heat treatment , deae - sepharose fast flow column chromatography
本文对来源于枯草芽孢杆菌( bacillussubtilis ) 3226 - 5的-乙酰乳酸脱羧酶经硫酸铵分级沉淀、热处理、 deae - sepharosefastflow离子交换柱层析等分离纯化步骤，得到sds - paeg电泳纯，通过n末端氨基酸序列分析验证酶蛋白的纯度。 |
