基础知识天天练生物选修

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1、is one of the practical form of values. The so-called values refers to the objective things are of no value and the value of fundamental perspective. Different values, peoples behaviour, attitudes, ways are different. People-oriented focus on human value and reality, we need the broadest masses as v

2、alues. Adhere to people-oriented values, is to make the economy more development, improve democracy, cultural prosperity, and live a happier; is deeply concerned that human development and human values, development of social and human development of rational unified, insisted in the material civiliz

3、ation, political civilization and spiritual civilization in the overall advancement of Socialist civilization to a higher level. Also want to see that persons value is not only meet your needs, also is to meet the needs of others and the community. Adhere to people-oriented, to strongly advocate eve

4、ry community member, serve others, beneficial to the community of people. The so-called Outlook, attitude is on the record, including who, how to create a record of achievements, how to evaluate performance, and so on. What values, what kind of Outlook. Adhere to people-oriented Outlook, is on the p

5、remise of respecting the interests and power of people, creating a popular, warm hearts, steady heart performance, creating serve for one officer, the benefit of achievements, and overall construction of well-off society and promoting the all-round development of peoples performance. Achievement eva

6、luation in both economic accomplishments, take another look at the effectiveness of social progress; changes in both urban and rural change; both hard environment to strengthen and take another look at the soft environment improvement momentum of development at present, depending on the potential fo

7、r sustainable development. Leave people to talk about values are worthless and leave people to talk about Outlook is not what the performance. 4. people responded to the starting point of the question, and replied to questions point. Man is the sum of social relationships. We cannot leave the chichu

8、anyongdu, housing, tourism and entertainment, entertaining, and even certain political, economic, cultural and social environment, and so on. Due to human needs, all walks of life will come into being. People create for their survival, and continue enjoying the results of the construction. Colorful

9、in the transformation of the people of the world, community vitality in the creation of man. Therefore, any work we do, the starting point is human, what are people. Us speed up development, the core of which is to meet the needs of people, including survival needs, emotional needs and self-actualiz

10、ation needs. It should be noted that people are not machines, not the slave of an object, not to be controlled. People have their own personality, has its own personality, has its own dignity. Person in need of care, you need to understand, need to meet. It is said that in the agricultural society,

11、people plant; in industrial society, man is an animal; the information society, return选修一 专题11“宁夏红”枸杞果酒是利用新鲜枸杞为原料,采用传统酿造技术与现代生物技术结合酿制而成。如图是某研究性小组的同学对枸杞果酒生产工艺进行考察后,绘制出的果酒生产工艺流程简图。据图回答:(1)枸杞果酒制作过程中,接种完成后要先向发酵罐中通入一段时间的无菌空气,这样做的目的是_。(2)在果酒酿造过程中,如果果汁灭菌不严格,含有醋酸杆菌,在酒精发酵旺盛时,醋酸杆菌能否将果汁中的糖发酵为醋酸?说明理由。_。(3)酵母菌与醋

12、酸杆菌在细胞结构上的主要区别是_。(4)若要提高果酒的产量,发酵过程中关键要控制好哪些条件?_。(5)果酒制作是否成功,需发酵后取样鉴定,可用哪些方法检验酒精是否存在?_。解析:本题主要考查了果酒、果醋制作的基本过程和原理,及两种微生物的代谢类型。酵母菌是兼性厌氧微生物,在有氧时进行有氧呼吸大量繁殖,无氧时进行无氧呼吸产生酒精;醋酸杆菌需要在有氧且温度是3035条件下,才能将糖转化成醋酸,而此时发酵罐中的条件是无氧且温度是1825,所以醋酸杆菌不能将果汁中的糖发酵为醋酸。酵母菌属于真菌,而醋酸杆菌是细菌,两者在细胞结构上有显著区别;适宜的温度、pH、通气量等条件都会影响果酒的产量;检验酒精是否

13、存在,可以通过嗅味和品尝进行初步检验,也可以用重铬酸钾检验。答案:(1)在有氧条件下,使酵母菌迅速繁殖,增加数量(2)不能。因醋酸杆菌是好氧性细菌,而果酒发酵是无氧环境(或因醋酸杆菌需要在有氧且温度是3035条件下,才能将糖转化成醋酸,而此时发酵罐中的条件是无氧且温度是1825)(3)有无成形的细胞核(4)适宜的温度、pH、通气量(答出温度即可)(5)向样液中加入重铬酸钾观察颜色的变化、用酒精比重计测定所得样液的酒精度等2下列是利用微生物制作果醋的流程示意图和发酵装置示意图,回答下列有关问题:(1)按照操作要求,把果浆倒入发酵罐后,影响发酵产物不同的重要因素有_、_、_。(2)A过程是_,A过程完成后,若要产生果醋,应该打开充气口,原理是_。(3)在这个发酵过程中,应对发酵产物及时检测,检测时应从_取样。(4)发酵过程中,你认为应该从哪些方面防止发酵液被污染?_。答案:(1)温度时间菌种(2)酒精发酵醋酸菌是一种好氧细菌(3)出料口(4)榨汁机、发酵装置要清洗干净;装入果汁后,封闭充气口(其它答案合理也可,至少回答二项)3泡菜是人们

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