The cell. Кулагина Ж.Д. - 27 стр.

                                        27
     Ex. 5. Give English equivalents for the following words and word
combinations.

Тело, тело растения, сферическое тело, видимые тела, протоплазматиче-
ское тело растительной клетки, стенка тела; клетка, живая клетка, иден-
тичная клетка, (родительская, материнская, дочерняя) клетка, центр клет-
ки, дифференцированные клетки, (кровяные, нервные) клетки, размер
клетки, индивидуальные клетки.

      Ex. 6. Put the verbs in brackets into a proper tense and voice.

1. The root (hold*) the plant in the ground. 2. The plant (hold*) in the ground by
the root. 3. Different functions (perform) by leaves. 4. Leaves (perform)
different functions. 5. Even at that moment his heart (keep*) an even rhythm and
(not miss) a single beat. 6. Not a muscle (move) on his face, not a beat of the
heart (miss).

      Ex. 7. Define the function of infinitives in the following sentences.

                                        A
1. To manufacture sugar is one of the main functions of the leaves. 2. To
demonstrate the continuity of all living processes in an organism is easy if we
take the heart as an example. 3. To know the general laws of interrelations
between a living organism and nature is necessary for every biologist. 4. To
grow doesn’t mean for an organism to stop functioning. 5. To show the scale of
organization of these living organisms is impossible here. 6. To hold the plant in
the ground is one of the functions the root performs. 7. To eliminate waste
products is the main function of the excretory system, kidneys including. 8. To
imagine what happens inside an organism has become possible thanks to the
modern technique of investigation. 9. To study living things it is necessary to
sort them into groups. 10. To determine the chemical composition of an object,
the fly needn’t perform any complex analyses, for it receives all the information
it needs by touching the object with its legs. 11. To give a simple definition of
life is difficult.
                                       B
1. The primary function of the stem is to support the leaves and to conduct
materials from one part of the plant to another. 2. One of the primary goals of
protein chemists is to relate the function of a polypeptide to its structure. 3.
When an organism grows each of its organs continues to function. 4. Growing
the lungs continue without intermission to take in air and the oxygen in the air
continues to be absorbed into the blood vessels. 5. The muscles as they grow go
on to respond to stimuli by contraction. 6. To follow the growth of plants is to
learn their laws of development. 7. The stem is an organ which is to support the