Mark the letter A, B, C or D on your answer to indicate the correct answer to each of the question from 1 to 10.The first two decades of this century were dominated by the microbe hunters. These hunters had tracked down one after another of the microbes responsible for the most dreaded scourges of many centuries: tuberculosis, cholera, diphtheria. But there remained some terrible diseases for which no microbe could be incriminated: scurvy, pellagra, rickets, beriberi. Then it was discovered that ...
Tôi yêu Việt Nam | Chat Online | |
03/09 22:42:49 (Tiếng Anh - Lớp 12) |
Mark the letter A, B, C or D on your answer to indicate the correct answer to each of the question from 1 to 10.
The first two decades of this century were dominated by the microbe hunters. These hunters had tracked down one after another of the microbes responsible for the most dreaded scourges of many centuries: tuberculosis, cholera, diphtheria. But there remained some terrible diseases for which no microbe could be incriminated: scurvy, pellagra, rickets, beriberi. Then it was discovered that these diseases were Câused by the lack of vitamins, a trace substance in the diet. The diseases could be prevented or cured by consuming foods that contained the vitamins. And so in the decades of the 1920‟s and 1930‟s, nutrition became a science and the vitamin hunters replaced the microbe hunters.
In the 1940‟s and 1950‟s, biochemists strived to learn why each of the vitamins was essential for health. They discovered that key enzymes in metabolism depend on one or another of the vitamins as coenzymes to perform the chemistry that provides cells with energy for growth and function. Now, these enzyme hunters occupied center stage.
You are aware that the enzymes hunters have been replaced by a new breed of hunters who are tracking genes – the blueprints for each of the enzymes – and are discovering the defective genes that Câuse inherited diseases – diabetes, cystic fibrosis. These gene hunters, or genetic engineers, use recombinant DNA technology to identify and clone genes and introduce them into bacterial cells and plants to create factories for the massive production of hormones and vaccines for medicine and for better crops for agriculture. Biotechnology has become a multibillion-dollar industry.
In view of the inexorable progress in science, we can expect that the gene hunters will be replaced in the spotlight. When and by whom? Which kind of hunter will dominate the scene in the last decade of our century and in the early decades of the next? I wonder whether the hunters who will occupy the spotlight will be neurobiologists who apply the techniques of the enzyme and gene hunters to the functions of the brain. What to call them? The head hunters. I will return to them later.
Which of the following can be cured by a change in diet?
Lựa chọn một trả lời để xem Đáp án chính xác Báo sai đáp án hoặc câu hỏi |
A. Pellagra 0 % | 0 phiếu |
B. Cystic fibrosis 0 % | 0 phiếu |
C. Tuberculosis 0 % | 0 phiếu |
D. Cholera 0 % | 0 phiếu |
Tổng cộng: | 0 trả lời |
Trắc nghiệm liên quan
- Mark the letter A, B, C or D on your answer to indicate the correct answer to each of the question from 1 to 10.The first two decades of this century were dominated by the microbe hunters. These hunters had tracked down one after another of the ... (Tiếng Anh - Lớp 12)
- Mark the letter A, B, C or D on your answer to indicate the correct answer to each of the question from 1 to 10.The first two decades of this century were dominated by the microbe hunters. These hunters had tracked down one after another of the ... (Tiếng Anh - Lớp 12)
- Mark the letter A, B, C, or D on your answer sheet to indicate the word whose underlined part differs from the other three in pronunciation in each of the following questions. (Tiếng Anh - Lớp 12)
- Mark the letter A, B, C, or D on your answer sheet to indicate the word whose underlined part differs from the other three in pronunciation in each of the following questions. (Tiếng Anh - Lớp 12)
- Mark the letter A, B, C, or D on your answer sheet to indicate the word or phrase that is CLOSEST in meaning to the underlined part in each of the following questions.When being interviewed, you should concentrate on what the interviewer is saying or ... (Tiếng Anh - Lớp 12)
- Mark the letter A, B, C, or D on your answer sheet to indicate the word or phrase that is CLOSEST in meaning to the underlined part in each of the following questions.Peter didn’t mean to be disrepsectful to his teacher. He just couldn’t control his ... (Tiếng Anh - Lớp 12)
- Mark the letter A, B, C, or D on your answer sheet to indicate the word or phrase that is CLOSEST in meaning to the underlined part in each of the following questions.The medical community continues to make progress in the fight against cancer (Tiếng Anh - Lớp 12)
- Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions.Prehistoric horses were far removed from the horses that Christopher Columbus brought on his ships during his ... (Tiếng Anh - Lớp 12)
- Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions.Prehistoric horses were far removed from the horses that Christopher Columbus brought on his ships during his ... (Tiếng Anh - Lớp 12)
- Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions.Prehistoric horses were far removed from the horses that Christopher Columbus brought on his ships during his ... (Tiếng Anh - Lớp 12)
Trắc nghiệm mới nhất
- Yếu tố nền tảng của kiểm soát nội bộ là (Tổng hợp - Đại học)
- Tổ chức đầu tiên trên thế giới nghiên cứu về gian lận là: (Tổng hợp - Đại học)
- Tác giả của mô hình tam giác gian lận là ai? (Tổng hợp - Đại học)
- Mô hình tam giác gian lận trình bày về vấn đề gì? (Tổng hợp - Đại học)
- Theo Cressey, có bao nhiều nguyên nhân chính làm nảy sinh áp lực dẫn đến hành vi gian lận? (Tổng hợp - Đại học)
- d) Một nhà kho có diện tích là 475 m2. Người ta muốn chia khu vực này thành các ô nhỏ, mỗi ô có diện tích 9,5 m2. Hỏi có thể chia được bao nhiêu ô? (Toán học - Lớp 5)
- Theo ACFE, các loại gian lận phổ biến gồm: (Tổng hợp - Đại học)
- c) Biểu thức nào sau đây có giá trị lớn nhất? (Toán học - Lớp 5)
- b) 5,2 không là thương của phép chia nào dưới đây? (Toán học - Lớp 5)
- Theo ACFE, những ai là người phát hiện gian lận nhiều nhất: (Tổng hợp - Đại học)