搜题请搜索小程序“爱下问搜题”
问题 问答题

端粒(telomere)

答案

参考答案：以线性染色体形式存在的真核基因组DNA末端的一种特殊结构，是一段DNA序列和蛋白质形成的一种复合体。端粒起到防止DNA末端降解，保证染色体的稳定性和功能的作用。

单项选择题 A1/A2型题

肾小管性蛋白尿时尿中何种蛋白升高（）.

A.白蛋白

B.IgM

C.β2-微球蛋白

D.IgG

E.脂蛋白
查看答案
单项选择题

Attempts to understand the relationship between social behavior and health have their origin in history. Dubos (1969) suggested that primitive humans were closer to the animals (1) they, too, relied’upon their instincts to stay healthy. Yet some primitive humans (2) a cause and effect relationship between doing certain things and alleviating (3) of a disease or (4) the condition of a wound. (5) there was so much that primitive humans did not (6) the functioning of the body, magic became an integral component ofthe beliefs about the causes and cures of heath (7) Therefore it is not (8) that early humans thought that illness was caused (9) evil spirit. Primitive medicines made from vegetables or animals were invariably used in combination with some form of ritual to (10) harmful spirit from a diseased body.

One of the. earliest (11) in the Western world to formulate principles of health care based upon rational thought and (12) of supernatural phenomena is found in the work of the Greek physician Hippocrates. The writing (13) to him has provided a number of principles underiying modern medical practice. One of his most famous (14) , the Hippocratic Oath, is the foundation of contemporary medical ethics.

Hippocrates also argued that medical knowledge should be derived from a (15) of the natural science and the logic of cause and effect relationships. In this (16) thesis, On Air, Water, and Places, Hippocrates pointed out that human well-being is (17) by the totality of environmental (18) : living habits or lifestyle, climate, geography of the land, and the quality of air, and food. (19) enough, concerns about our health and the quality of air, water, and places are (20) very much written in twentieth century.

10（）

A.discharge

B.exclude

C.dismiss

D.expel
查看答案