题目内容（请给出正确答案）

[主观题]

三、TURE OR FALSE: （10 points, 2 points for each) 1...

三、TURE OR FALSE: (10 points, 2 points for each) 1. The principal properties that can be exploited to separate proteins form each other are size, charge, hydrophobicity and affinity for other molecules. （） 2. RNA transcription is asymmetric. It means the coding strand is always the same strand. （） 3. There is a loop of 12 amino acids anchored by two cysteine and two histidine residues that tetrahedrally co-ordinate a zinc ion in C2H2 zinc finger. （） 4. Ribozymes are catalytic RNA molecules that can catalyze particular biochemical reactions in the absence of protein. （） 5. Both shearing and sonication denature the DNA. They also reduce the length of DNA. （）

暂无答案

如搜索结果不匹配，请联系老师获取答案

您可能会需要：

重置密码查看订单联系客服

安装上学吧APP，拍照搜题省时又省心！

更多“三、TURE OR FALSE: （10 points, 2…”相关的问题

第1题

三、TURE OR FALSE: (10 points, 2 points for each) 1...

三、TURE OR FALSE: (10 points, 2 points for each) 1. The origins of eukaryotes are more complex than those of prokaryotes because the initiation of DNA replication and the control of the growth cycle of the organism are regulated and co-ordinated at these sites. （） 2. Minichromosomes are applied widely to study initiation mechanism of DNA replication in prokaryotes because the phages and plasmids are not good models. （） 3. Transposons (Tn) or transposable elements are small DNA sequences that can move to virtually any position in a cell genome. （） 4. All RNA polymerases and DNA polymerases either in prokaryotes or in eukaryotes like E.coli polymerase have a multisubunit structure. （） 5. TFIIF is a large multicomponent protein complex which contains both kinase and helicase activity. （）

点击查看答案

第2题

Part Two Questions 1-10 （2 points for each 20 poin...

Part Two Questions 1-10 （2 points for each 20 points totally） Questions 1 – 10 1.( ) 2. ( ) 3. ( ) 4. ( ) 5. ( ) 6.（） Directions: There are two passages in this section.For each question (1-10), mark one letter (A, B, C or D) on your Answer Sheet. You should decide on the best choice. Passage One CREATIVITY IN THE WORKPLACE (questions 1-6 ，12 points totally) Yet while senior managers may regret the lack of creativity, they must take much of the blame for creating the situation. Until recently, successive generations of management ignored innovative ideas from employees. Indeed, new ways of thinking were often regarded as an unwanted distraction, and original thinkers received little support. Despite the fact that many organisations are now taking steps to reorient the business culture to promote creativity, it is not surprising, given this background, that a creative environment Is hard to establish. Another related issue is raised by Katrina Murray, a partner in a management consultancy: 'While many senior managers still complain about the lack of support lor creativity in their organisations, they also fall to appreciate the contribution that they themselves can make. In some companies, there is a perception that only managers at board level can influence the company culture.' Murray feels that such organisations are unlikely to change. For her, 'creative organisations are made up of individuals who believe they can dictate their own future. Companies need to be able to spot these Individuals and gently encourage them to lead the way.' It Is also necessary for senior managers to reexamine their role. According to Alex Sadowski, an American professor of management science, promoting creativity means re-evaluating most of what we know about management. It means organisations must be prepared to invest In ideas without being sure of the return on that investment.Katrina Murray agrees with this view. 'Businesses are expert at the measured approach, which involves analysis and risk avoidance. But there is another approach, which involves intuition and not always looking at the bottom line. What Is hard is establishing a working environment in which both these approaches can function simultaneously. Nevertheless, there are some pleasing Indicators of progress in this area. Many of the senior managers Interviewed in the survey say their organisations have adopted a number of strategies to encourage individuals to channel their creativity. Among these are giving open and honest feedback, allowing employees the freedom to measure their performance against more flexible goals, and higher toleration levels of failure. Senior managers also recognize that the way an organisation is led and managed is critical to building a creative environment and that they themselves have an important role to play. But there are some experts who believe an even more fundamental change is needed. Tom Robertson, a professor of creative education, believes that the lack of creativity In companies is a problem that originated in schools and universities. The solution, he says, lies in more enlightened educational policies. 'There are already signs on this, but creativity is still concentrated in certain sectors, such as pharmaceuticals, advertising and the media. These sectors have always valued creativity, but the real challenge will be to shift some of these sectors practices into more traditional manufacturing and service companies. （）1.Many senior managers feel that organisations have difficulties innovating because of A. a poor level of skills among employees B. an emphasis on rapid achievement C. an increased risk associated with change D. an insistence on a standard company philosophy （）2.According to the writer, many organisations today are A.finding it easier to introduce a creative approach B.having problems understanding innovation as a concept C.actively developing the conditions for a creative approach D.resisting innovative staff suggestions （）3.In the third paragraph, Katrina Murray expresses the view that 　　A. top management must dictate the pace of change 　　B. some employees lack a commitment to change. 　　C. most organisations are incapable of bringing about effective change 　　D. some senior managers underestimate the role they can play in achieving change. （）4.Alex Sadowski and Katrina Murray agree that to be truly innovative, organisations must 　　A. invest in the right managers B. place less emphasis on financial considerations C. have a double focus to their policies D. not to change employer （）5.According to the survey, which of the following strategies has been introduced to encourage creativity? A.a greater acceptance of error B.financial rewards for higher levels of creativity C.the introduction of specific performance targets D. the promotion of creative individuals to senior posts （）6.Tom Robertson believes that, in the future, it will be difficult to achieve A.an educational system that encourages creativity B.a combination of practices that promote creativity C.the spread of creativity to a range of businesses D.a greater respect for creativity in pharmaceutical companies

点击查看答案

第3题

一、DESCRIPTION : (20 points，4 points for each） 1. Silencer 2. Alternative RNA processing 3. Basic leucine zipper 4. tmRNA 5. Polyproteins

点击查看答案

第4题

[图][图](8 points for each)...

(8 points for each)

点击查看答案

第5题

一、DESCRIPTION : (20 points，4 points for each） 1. SSLP 2. Pribnow box 3. Mutation of termination codon 4. Photoreactivation 5. Enhancer

点击查看答案

第6题

SECTION 1 (10 points)

Listen to the following passages and then decide whether the statements below are true or false. There are 10 questions in this section, with 1 points each. You will hear the recording only ONCE. At the end of the recording, you will have 2 minutes to finish this section.

听力原文： In April, the Manhattan Institute released its yearly study of graduation rates. The research group used information from 2003. The researchers found that 72 percent of girls successfully completed their high school education. That compared to 65 percent of boys. The newspaper Education Week noted earlier this year that, in some ways, what people are worried about now is really not new. Boys have scored lower than girls on tests in the National Assessment of Educational Progress since at least 1971.

And the differences are not limited to the United States. Education Week noted the results of an international reading test in 2003. Fifteen-year-olds took the test in 41 countries. Girls scored higher than boys in almost every country. Differences between males and females are a continuing issue of fierce debate. Cultural and economic influences play an important part. But recent findings suggest that another part of the answer lies in differences between the male and female brains.

These include differences in learning rates. As a result, some researchers say, boys may not be able to develop language and reading skills as well as girls do. The last time there was a lot of concern about differences in school, it was about girls, especially in math and science classes. Efforts to improve the situation for girls included hiring more female teachers. Yet some people think the opposite situation exists now. They say not enough male teachers is one reason why boys may not learn as well in class. Another explanation being heard involves the increased testing in American schools. Some people say schools are preparing for these important tests by forcing boys to sit quietly at their desks. They say this is unfair. Still others say that society is failing boys, by giving them the message that studying is not manly. And others say boys are failing in school because they become too interested in the girls in their classes. One attempt to solve problems like these is the use of same-sex classrooms.

For the past two decades, girls have always achieved high scores than boys.

A．正确

B．错误

点击查看答案

第7题

SECTION 1 (10 points)

听力原文： In April, the Manhattan Institute released its yearly study of graduation rates. The research group used information from two thousand three. The researchers found that seventy-two percent of girls successfully completed their high school education. That compared to sixty-five percent of boys. The newspaper Education Week noted earlier this year that, in some ways, what people are worried about now is really not new. Boys have scored lower than girls on tests in the National Assessment of Educational Progress since at least nineteen seventy-one.

And the differences are not limited to the United States. Education Week noted the results of an international reading test in two thousand three. Fifteen-year-olds took the test in forty-one countries. Girls scored higher than boys in almost every country. Differences between males and females are a continuing issue of fierce debate. Cultural and economic influences play an important part. But recent findings suggest that another part of the answer lies in differences between the male and female brain. These include differences in learning rates. As a result, some researchers say, boys may not be able to develop language and reading skills as well as girls do. The last time there was a lot of concern about differences in school, it was about girls, especially in math and science classes. Efforts to improve the situation for girls included hiring more female teachers.

Yet some people think the opposite situation exists now. They say not enough male teachers is one reason why boys may not learn as well in class. Another explanation being heard involves the increased testing in American schools. Some people say schools are preparing for these important tests by forcing boys to sit quietly at their desks. They say this is unfair. Still others say that society is failing boys, by giving them the message that studying is not manly. And others say boys are failing in school because they become too interested in the girls in their classes. One attempt to solve problems like these is the use of same-sex classrooms.

For the past two decades, girls have always achieved high scores than boys.

A．正确

B．错误

点击查看答案

第8题

四、SHORT QUESTIONS: (30 points，10 points for each) 1. Describe the definition and process

of subcloning. 2. List the elongation factors involved in proteins translation of prokaryotes, and describe their functions. 3. The mechanism of rolling circle replication。

点击查看答案

第9题

四、MAJOR QUESTIONS: (30 points，10 points for each) 1. Describe the mechanism of RNA interf

erence mediated by siRNA. 2. How to find the right initiator condon is crucial to proteins synthesis. What is the difference between prokaryotes and eukaryotes? 3. Why the organism choose RNA as primer?

点击查看答案

第10题

decide whether the following translations are true or false. most of the research concluded that for each 100-point increase in the average sat score, a graduate could expect a 3% to 7% increase in lifetime earnings. 译文：大多数调查的结论是，sat的平均成绩每高出100分，大学毕业生一年的收入便会增加3%到7%。 ()

点击查看答案