The cell. Кулагина Ж.Д. - 20 стр.

                                         20
     Ex. 7. Give Russian equivalents to the following words and word
combinations.

temperature, optimal temperature, (constant, high, normal) temperature; stage,
final stage, at the (first) stage; chromosome, chromosome thread, daughter
chromosome; inherent, inherent property; capacity, surprising capacity, to lose*
the capacity (to divide); function, to function, to perform a function, to carry out
a function, to function in coordination with; size, cell size, to reach the size of (a
typical cell), to grow* to the size of (a typical cell), to increase in size, mere
increase in size; sensitivity, sensitivity of living substance to outer changes,
sensitive, sensitive to (various environmental influences, temperature, poisons,
radiant energy); nucleus, nuclei, nucleolus, interkinetic nucleus, nucleus
membrane; cell, (identical, maternal, daughter, differentiated, blood, nerve,
parent) cells, the poles of the cell, to attain the dimensions and shape of a
(maternal) cell; to become*, to become (convinced, important, visible,
conspicuous, a part of a plant).

      Ex. 8. Form adjectives from the following adverbs:
      completely, immediately, frequently, particularly, finely, normally.

                                       Step 2
      Ex. 9. Read and translate text A.

                                     TEXT A
                                  Cell Division.

        The function of reproduction or multiplication is an inherent property of
the living cell by which two cells are obtained which are usually so identical
that it is impossible to define which of them is the maternal cell and which is the
daughter one.
        The vitally important process of cell division occurs either through
karyokinesis or through mitosis. Division of a cell begins after a more or less
protracted period known as interkinesis or interphase. In the interkinetic
nucleus the chromosomes are not
visible, but appear instead аs 1ong, thin interwind threads. At this stage the
cell is already being prepared for mitosis.
        During the preparation for mitosis the cell center divides and begins
moving apart to the opposite sides of the cell. The chromosome threads coil up
into spirals, thicken and become visible under an ordinary microscope. The
nucleolus and nuclear membrane gradually disappear and a spindle is formed.
This first stage of mitosis is known as the prophase.