- •Texts: origin of life. Properties of chemical reactions pre-reading and reading tasks.
- •Origin of life
- •Notes to the text: Aristotle ["xrIs'tq(V)tl]
- •John Tyndall [dZPn tIndl]
- •Comprehension check
- •3. Point out the topic sentence in each paragraph. Language focus Form the derivatives of the words given in the chart below (where possible):
- •Follow-up activities
- •Additional text
- •I. Read and translate the text. Be ready to fulfil the tasks that follow. Properties of chemical reactions
- •Post-reading tasks
- •Grammar exercises
- •Texts: the cell. Cells pre-reading and reading tasks.
- •1. Study the meaning and pronunciation of the following words:
- •2. Make sure you know the following words and word combinations:
- •3. Comment on the headline of the text before reading it. What do you know about the cell? Read the text and point out what information is new for you. The cell
- •Notes to the text:
- •Comprehension check
- •Language focus
- •1. Say it in another way (give synonyms):
- •Follow-up activities
- •Additional text
- •Post-reading tasks
- •Grammar exercises
- •Texts: how the body works. The skin. Seeing. Taste and smell. Hearing. Pre-reading and reading tasks
- •How the body works
- •Comprehension check
- •1. Agree or disagree with the following:
- •2. Answer the questions:
- •Language focus
- •Follow-up activities
- •Additional texts
- •The skin
- •Taste and smell
- •Hearing
- •Imagine that you are making a speech on one of these topics:
- •Grammar exercises
- •Texts: the brain. Pre-reading and reading tasks.
- •1. Practise the pronunciation and study the meaning of the words:
- •The brain
- •Comprehension check
- •1. Express your agreement or disagreement with the following:
- •Language focus.
- •3. Translate the following sentences from Russian into English:
- •Follow-up activities
- •Additional text
- •The brain
- •Post-reading tasks
- •Grammar exercises
- •Texts: the nerves. The nervous system. Pre-reading and reading tasks
- •The nerves
- •Comprehension check
- •Language focus
- •3). Translate the sentences into English using the vocabulary of the unit:
- •Follow-up activities
- •Additional text
- •The nervous system
- •Post-reading tasks
- •Grammar exercises
- •Texts: the skeleton and muscles. Bones and muscles. Pre-reading and reading tasks
- •The skeleton and muscles
- •Comprehension check
- •Language focus
- •Follow-up activities
- •Additional text
- •Bones and muscles
- •Post-reading tasks
- •Grammar exercises
- •Texts: the blood system. Blood. Pre-reading and reading tasks
- •2. Try to guess the meaning of the following words and word combinations:
- •3. Read the text carefully to fulfil the tasks that follow. The blood system
- •Comprehension check
- •Language focus
- •In each box below match the words which are: a) similar or b) opposite in meaning:
- •Follow-up activities
- •Additional text
- •Post-reading tasks
- •Grammar exercises
- •Texts: the digestive system. Nutrition. Pre-reading and reading tasks
- •2. Make sure you know the meaning of these words and word combinations:
- •3. Read the text carefully to fulfil the tasks that follow. The digestive system
- •Comprehension check
- •Language focus
- •Follow-up activities
- •Additional text
- •Nutrition
- •Post-reading tasks
- •Imagine that you are making a speech on the topic “Nutrition”. Grammar exercises
- •Pre-reading and reading tasks
- •Viruses and subviruses
- •Viruses
- •Subviruses
- •Comrehension check
- •Viruses contain
- •Viruses do not
- •Viruses that attack only bacteria are known as … .
- •It is possible that viruses may be moving genetic material from
- •Viruses may prove, in some cases, to be the simplest of
- •3. Think of 5-7 statements that would contradict the contents of the text. Language focus
- •3. Define the following terms:
- •4. Match the first half of a sentence in column a with the appropriate second half in column b:
- •5. Put the parts of the sentences in the right order:
- •Unit 10
- •Text: monera pre-reading and reading tasks
- •1. Make sure you know the following words:
- •2. Read and translate the text. Monera
- •Comprehension check
- •Follow-up activities
- •1. Prepare a dialogue with your partner discussing:
- •Grammar exercises
- •Unit 11
- •Text: protista. Pre-reading and reading tasks
- •1. Make sure you know the following words:
- •2. Read and translate the text. Protista
- •Comprehension check
- •1. Choose the right variant for the multiple-choice statements.
- •1. All protists
- •2. Ask questions revealing the main points of the text.
- •3. Think of 5-7 statements that would contradict the contents of the text. Language focus
- •Follow-up activities
- •1. Prepare dialogues discussing: a) general information about the kingdom Protista; b) primitive protists; c) true algae; d) unicellular algae.
- •2. Prepare a report on the topic under discussion. Grammar exercises
- •Unit 12
- •Text: fungi pre-reading and reading tasks
- •1. Make sure you know the following words and word combinations:
- •Comprehension check
- •7. Many true fungi have mycelia that grow in a close, intimate manner with plant roots, where the plants benefit by receiving … and … while the fungus benefits by receiving nutritious … .
- •8. Lichens involve the close association of a … and a … .
- •9. When the hyphae of a fungus grow around, sometimes in between, and even within living plant root cells, the association is … .
- •2. Questions to think about.
- •3. Think of 5-7 statements that would contradict the contents of the text. Language focus
- •1. Match the words that are: a) similar and b) opposite in meaning:
- •1. Name and describe: a) the major groups of fungi; b) the ways of fungal nutrition.
- •2. Prepare a report on the topic under discussion. Grammar exercises
- •Unit 13
- •Text: plant kingdom: plantae. Pre-reading and reading tasks.
- •Plant kingdom: plantae
- •Comprehension check
- •Language focus
- •Follow-up activities
- •1. Explain the terms: Chlorophyta, Phaeophyta, Rhodophyta.
- •Grammar exercises
- •Unit 14
- •Texts: coniferophyta: conifers. Anthophyta / angiosperms: flowering plants. Pre-reading and reading tasks
- •2. Read and translate the text. Coniferophyta: conifers
- •Anthophyta / angiosperms: flowering plants
- •Comprehension check
- •2. Ask questions revealing the main points of the text.
- •3. Think of 5-7 statements that would contradict the contents of the text. Language focus
- •1. Match the words that are: a) similar and b) opposite in meaning:
- •Follow-up activities
Notes to the text:
To fall in the range – входить в диапозон.
Classifications to go with them – классификации, которые соответствуют им.
Comprehension check
Think of 8 questions to the text.
Language focus
1. Say it in another way (give synonyms):
All living things consist of cells.
Cells are also different in size.
Each cell is so small that it can be seen only with the help of a microscope.
Almost all cells have a nucleus.
A cell needs energy to work in a proper way.
Mitochondria change the energy kept in food into a form of energy that can be used by the cell.
The cells form various shapes and sizes.
Inside the nucleus of each cell lie very small threads called chromosomes.
Ribosomes make proteins as the nucleus tells them.
The cell membrane permits waste chemicals made in the cell pass out.
k) Cilia look like minute hairs.
l) .Little tubes are set (settled) out in pairs.
Put the parts of the sentences in the right order:
Themselves, of, living, are, things, reproducing, capable.
Properties, in, considerable, exhibit, cells, variation.
The, a, is, center, nucleus, control, cell, the, of.
Eat, the, from, food, comes, we, energy, the.
Constantly, new, by, cells, are, skin, replaced, cells.
Of, nucleus, cell, threads, inside, each, lie, the, tiny.
Break, lysosomes, substances, down, help, cell, the, in.
Many, are, inside, little, a, there, tubes, cilia.
Translate from Russian into English:
А). расположенные попарно, расщеплять вещество, мельчайшие волоски, в общем, почти все клетки, контролирующий центр клетки, клеточная мембрана, химические отходы.
Б).
Все живые организмы состоят из клеток.
Жизнь начинается из одной клетки.
Продолжительность жизни клетки зависит от типа клетки.
Каждая клетка очень мала, поэтому ее нельзя увидеть невооруженным глазом.
У каждой клетки своя функция.
Чтобы хорошо работать, клетке нужна энергия, которая поступает с пищей.
Митохондрии изменяют накопленную в пище энергию в такую энергию, которой может воспользоваться клетка.
Клетки различаются по свойствам и размерам.
Нервные клетки не восстанавливаются.
Одинаковые клетки соединяются и образуют ткани.
Follow-up activities
Discuss will your partner:
The cell theory.
The nucleus as the control centre of the cell.
Ribosomes, genes and DNA.
Additional text
Read the text carefully to fulfil the tasks that follow.
CELLS
With the availability of the first microscopes, researchers began to observe the microscopic structure of many substances, and in 1665 the Englishman Robert Hooke described having seen what he called cells in a piece of cork. He used this term because the cork appeared to be composed of thousands of tiny chambers that resembled the individual sleeping rooms in monasteries at the time, which were called cells. He was not aware that he was viewing just the cell walls, which were the only structures remaining from what had once been living cells.
Hooke’s initial discovery led to other advances, such as the finding that unlike plant cells, which have thick cell walls, animal cells lack such a wall and instead have only a thinner, generally more flexible plasma membrane.
Cells were then found to exist independently or as one small part of an organism consisting of many cells, a multicellular organism. Hooke was the first to discover that some organisms consist entirely of a single cell. These unicellular organisms, such as thousands of species of bacteria and protozoa, carry out all necessary life-supporting functions within one cell without the help of other cells. In contrast, multicellular organisms have cells with specific functions, and together the aggregate of cells embodies a complex organism.
It took about 150 years after Hooke discovered cells before several important related facts were articulated. Two German scientists, Matthias Schleiden and Theodor Schwann were the first to explain, in 1838 and 1839 respectively, the basic tenets of what we now call cell theory:
Cells are the fundamental units of life.
Cells are the smallest entities that can be called living.
All organisms are made up of one or more cells.
The longest cells are certain nerve cells (neurons), which can reach over a meter in length. While an ostrich egg is 1,500 times the size of a human egg cell – which is 14 times the size of a human red blood cell, itself as much as 35 times the size of many small single-celled microorganisms – most cells do have one thing in common: They tend to be quite small. While the size range reflects considerable diversity, most cells are 0.5 to 40 microns in diameter (1,000 microns equals one millimeter).
Small cell size is thought to be a function of the restriction placed on them by the ratio of surface area to volume. Cells are constantly absorbing molecules from the surrounding medium and releasing molecules into the surrounding medium. These processes are more readily accomplished when a cell is small and the ratio of surface area to volume is quite large. As a cell increases in size, the amount of volume inside the cell increases much more rapidly than the amount of surface surrounding the cell, and in time the cell becomes too large to maintain a stable internal environment.
Many scientists believe that it is more difficult for the nuclear material to maintain control over the entire internal environment when a cell is over a certain size. Therefore, if a small nucleus is most often the rule, then an upper limit is placed on the size of most cells.