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Essential English for Biology Students
Печатается по решению Редакционно-издательского совета
ФГАОУВПО «Казанский (Приволжский) федеральный университет»
учебно-методической комиссии Института языка
Протокол N 5 от 6 февраля 2012 г.
заседания кафедры английского языка
Протокол N 6 от 18 января 2012 г.
докт.фил.наук, профессор Г.А. Багаутдинова
канд.пед.наук, доцент И.З. Шахнина,
докт.биол.наук, професcор А.А. Шинкарев
Шустова Э.В., Мельникова О.К
Essential English for Biology Students: учебное пособие по английскому языку для студентов биологических факультетов вузов. – Казань: Казанский университет, 2012. – 196 с.
Основная цель пособия “Essential English for Biology Students” – помочь студентам естественно-научного профиля, изучающим биологию, усовершенствовать свои знания английского языка. Пособие состоит из 8 разделов, посвященных некоторым из основных проблем биологии, 24 уроков, 10 текстов для дополнительного чтения, кроме того, приводится перечень лексических единиц, часто вызывающих у студентов трудности в употреблении, также дается глоссарий основных биологических терминов.
Материал данного учебного пособия призван помочь студентам, изучающим английский язык специальной области «Биология» овладеть лексическим запасом, необходимым для чтения и перевода текстов научного характера, а также отработать навыки устных выступлений и проведения презентаций.
© Казанский университет, 2012
Text 1.1 The Characteristics Of Life 5
Text 1.2. What Do Biologists Do? 14
Unit II. СELL 26
Text 2.1 Cell Theory 26
Text 2.2. Introduction To Cell Division 32
Text 2.3. Microscopes 38
Text 3.1. DNA Structure 46
Text 3.2 Chromosomes 53
INIT IV. INHERITANCE 62
Text 4.1. Variation 62
Text 4.2. Down's Syndrome And Genetic Screening 72
Text 5.1. Nerves And Hormones 80
Text 5.2. Setting up a nerve impulse 86
UNIT VI. EVOLUTION 94
Text 6.1. Theories Of Evolution 94
Text 6.2. Natural Selection 101
Text 6.3. Artificial Selection 108
Text 6.4. Human Evolution: Primate Ancestors 115
Text 7.1. Photosynthesis: An Overview 124
Text 7.3. Photosynthesis In Different Climates 136
UNIT VIII. STRUCTURE AND TRANSPORT IN PLANTS 145
Text 8.1 The Leaf 145
Text 8.2. The Stem 152
Suggested Answers and Solutions 182
Glossary of Biological Terms 192
References – Список использованной литературы 200
Web – Resources and Support 201
■ Essential targets:
By the end of this text you should be able to:
■With your partner try to match the definition with the correct word. Guess if you are not sure! Then scan the text quickly to see if you were right.
■ Read the given text and make your essential assignments:
Biology is the study of life and living organisms. For as long as people have looked at the world around them, people have studied biology. Even in the days before recorded history, people knew and passed on information about plants and animals.
Modern biology really began in the 17th century. At that time, Anton van Leeuwenhoek, in Holland, invented the microscope and William Harvey, in England, described the circulation of blood. The microscope allowed scientists to discover bacteria, leading to an understanding of the causes of disease, while new knowledge about how the human body works allowed others to find more effective ways of treating illnesses. All these new knowledge needed to be put into order and in the 18th century the Swedish scientist Carl Linnaeus classified all living things into the biological families we know and use today.
In the middle of the 19th century, unnoticed by anyone else, the Austrian monk Gregor Mendel, created his Laws of Inheritance, beginning the study of genetics that is such an important part of biology today. At the same time, while traveling around the world, Charles Darwin was formulating the central principle of modern biology – natural selection as the bases of evolution.
It is hard to believe, but the nature of viruses has become apparent only within the last half of the 19th century and the first step on this path of discovery was taken by the Russian botanist Dmitry Ivanovsky in 1892.
In the 20th century biologists began to recognize how plants and animals live and pass on their genetically coded information to the next generation. Since then, partly because of developments in computer technology, there have been great advances in the field of biology; it is an area of ever-growing knowledge.
During the past few hundred years biology has changed from concentrating on the structure of living organisms to looking more at how they work or function. Over this time biologists have discovered much about health and disease, about the genes which control the activities of our bodies and how humans can control the lives of other organisms. We need to understand how our activities affect the environment, how humans can take responsibility for their own health and welfare and how we must be careful to make appropriate rules for the use of our genetic information.
Nowadays biologists are making fantastic discoveries which will affect all our lives. These discoveries have given us the power to shape our own evolution and to determine the type of world we will live in. Recent advances, especially in genetic engineering, have dramatically affected agriculture, medicine, veterinary science, and industry, and our world view has been revolutionized by modern developments in ecology. There has never been a more exciting nor a more important time to study biology.
Biology is the scientific study of life. But what is life? When we see a bird on a rock it may seem obvious that the bird is alive and the rock is not, but what precisely makes the bird alive and the rock not? Throughout history, thinkers in many fields tried to define life. Although they have failed to provide a universally accepted definition, most scientists agree that all living things share certain basic characteristics:
■ Living things are made of organized structures.
■ Living things reproduce.
■ Living things grow and develop.
■ Living things feed.
■ Living things respire.
■ Living things excrete and waste.
■ Living things respond to their surroundings.
■ Living things move.
■ Living things control their internal conditions.
■ Living things are able to evolve.
Non-living systems may show some of the characteristics of living things, but life is the combination of all these characteristics.
Organization. All things are made of chemicals, but in living things the chemicals are packaged into highly organized structures. The basic structure of life is the cell. Cells themselves contain small organelles that carry out specific functions. A cell may exist on its own or in association with other cells to form tissues and organs. Because of their highly organized structure, living things as organisms.
Reproduction. Reproduction is the ability to produce other individuals of the same species. It may be sexual or asexual. Reproduction involves the replication of DNA. This chemical contains genetic information which determines the characteristics of an organism, including how it will grow and develop. The continued existence of life depends on reproduction, and this is perhaps the most characteristic feature of living things. Reproduction allows both continuity and change. Over countless generations this has allowed species to become well suited to their environment, and life to evolve gradually to more complex forms.
Growth and development. All organisms must grow and develop to reach the size and level of complexity required to complete their life cycle. Growth is a relatively permanent increase in size of an organism. It is brought about by taking in substances from the environment and incorporating them into the internal structure of the organism. Growth may be measured by increases in linear dimensions (length, height, etc.), but is best measured in terms of dry weight as this eliminates temporary changes due to intake of water which are not regarded as growth. Development involves a change in a shape and form of an organism as it matures. It is usually accompanied by an increase in complexity.
Feeding. Living things are continually transforming one form of energy into another to stay alive. Although energy is not destroyed during these transformations, heat is always formed. Heat is a form of energy which cannot be used to drive biological processes, so it is sometimes regarded as `wasted energy`.
Living things have to renew their energy stores periodically from their environment, to continue transforming energy and to replace the `wasted energy`. They also have to obtain nutrients – chemicals that make up their bodies or help them carry out their biological processes. Living things acquire energy and nutrients by feeding, either by eating other organisms, or by making their own food out of simple inorganic chemicals using energy from sunlight or from chemical reactions.
Respiration. Living things need energy to stay alive and to do work. Although food contains energy, this is not in a directly usable form. It has to be broken down.
The energy released during the breakdown is used to make ATP (adenosine triphosphate) in a process called respiration. ATP is an energy rich molecule and is the only fuel that can be used directly to drive metabolic reactions in living organisms.
Excretion. The energy transformations that take place in an organism involve chemical reactions. Chemical reactions that occur in organisms are called metabolic reactions.
Waste products are formed in these reactions, some of which are poisonous, so they must be disposed of in some way. The disposal of metabolic waste products is called excretion.
Responsiveness. All living things are sensitive to certain changes in their environments (stimuli) and respond in ways that tend to improve their chances of survival.
The degree of responsiveness depends on an organism`s complexity: a bacterium may be limited to simple responses, such as moving towards favorable stimuli or away from harmful ones; people can make highly sophisticated responses to a wide variety of stimuli which they may perceive either directly or with the aid of technological devices.
Movement. Responses usually involve some form of movement. Movement of whole organisms from one place to another is called locomotion. Plants and other organisms that are fixed in one place do not display locomotion, but they can move parts of their bodies. Movements of living things differ from those of non-living things by being active, energy-requiring processes arising from within cells.
Homeostasis. All living things are, to some extend, able to control their internal conditions so that their cells have a constant chemical and physical environment in which they can function effectively. The regulation and maintenance of a relatively constant set of conditions within an organism is called homeostasis. Homeostasis is a feature of all living systems, from a single cell to a whole biosphere (the part of Earth containing life).
Evolution. Living things are able to change into new forms of life. This evolution usually takes place gradually over successive generations in response to changes in the environment.
■ Glossary of essential terms for you to know
■ Your Essential Assignments
I. Quick check
A. Decide if the following statements are true or false.
1.) The earliest people must have known about plants or
they would have died.
2.) The microscope allowed biologists to treat illnesses.
3.) Darwin`s theory was one of the most important in biology.
4.) The study of biology has not changed at all over the centuries.
B. What is the difference between:
1.) the growth of a crystal and the growth of a plant
2.) the movement of a cloud and the movement of an animal?
II. Fill in the missing words:
III. Use monolingual English dictionary and write down what could
the words given below mean:
nutrient; sunlight; poison; breakdown; harmful.
IV. Find English equivalents to the following word combinations:
V. Give Russian equivalents to the following English terms:
VI. Find synonyms among the pool of words:
VII. Answer the following questions. Use all information given before:
VIII. Match the sentence halves. Make complete sentences:
IX. Read and translate the short text without any dictionary:
Fact of life:
The continued existence of life depends on reproduction, and this is perhaps the most characteristic feature of living things. Reproduction allows both continuity and change. Over countless generations this has allowed species to become well suited to their environment, and life to evolve gradually to more complex forms.
X. Food for thought:
a) You might be familiar with the mnemonic (memory aid) `Richard Of York Gave Battle In Vain` for remembering the colors of the spectrum – red, orange, yellow, green, blue, indigo, and violet. Suggest a mnemonic for the ten characteristic features of living things described in this unit. You can change the order of the features.
b) Robots can move and respond, and require energy to maintain their organization and a constant internal environment. How would you argue that robots are non-living objects? A robot could be made that has all the characteristic features of living things. Would it still be non-living?
XI. Translate into English using all the active possible:
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