农业微生物学试题库及答案VIP免费

《微生物学》试题 Ⅰ 本试题一共 2 道大题，共 2 页，满分 100 分。考试时间 120 分钟。 总 分 题号 一 二 三 四 五 六 七 八 九 十 阅卷人 题分 核分人 得分 注：1 .答题前，请准确、清楚地填各项，涂改及模糊不清者、试卷作废。 2 .试卷若有雷同以零分计。 一、名词解释(6×5)： 1. Colony 菌落 2. Virus 病毒 3. Biogeochemical cycle 4. Medium 培养基 5. Tansduction 转导 6. Mycorhiza 菌根 二、问答题(70 分) 1.What are the major differences between gram-positive and Gram-negative bacteria？(5 分) 什么是主要差异在革兰氏阳性之间，革兰阴性菌? 2.Distinguish between (a) phototrophs and chemotrophs, (b) Lithotrophs and organotrophs. (4 分) 区分(一个)光能营养型，化能营养，(b 淋巴细胞)无机营养生物，有机营养菌。 3.Yeast can grow both under aerobic and anaerobic conditions. What is the difference in energy production? (8 分)酵母能在需氧的，厌氧条件下增长。有什么不同在能源生产? 4.Draw a typical bacteria growth curve. Explain each phase. (8 分)In what circumstance, filtration and pasteurization methods are useful? (6 分) 画一个典型细菌生长曲线。说明每个相。(8 分)在什么环境，过滤，巴氏消毒法方法有用? 5.To determine the viable counts of a soil sample, which method is the best? List the procedures.(10 分)要确定一个土壤样品的可行的计数，哪种方法是最好的吗？列出的程序。 6.The donor bacterial cell in a transformation is probably dead. Explain why. (2 分) 7.What are the roles of a cloning vector, restriction enzymes, and DNA ligase in molecular cloning? (6 分)在分子克隆的克隆载体，限制性内切酶和DNA 连接酶的作用是什么？ 8.What does the term “antagonism” means? Explain the usefulness in biological control. (4 分) 9.Explain the following terms in Rhizobium-legume symbiosis: infection, host specificity, effectiveness, competitiveness. How to evaluate the symbiotic effectiveness in green-house? (10分)在豆科...