The cell. Кулагина Ж.Д. - 5 стр.

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surprising capacities of (protoplasm, cells, plants, living being); sensitivity to
outer changes; to manufacture food, digestion and assimilation of foods, organic
food.

       Ex. 5. Use the words of ex. 4 and make up new word combinations with
"essential for", "understanding of", "to disclose the (process, reason) of", "to
yield knowledge of".

Model: essential for a living plant
                     a living organism

       Ex. 6. Translate the following sentences into Russian paying attention to
the tense and voice of the predicates.

1. Proteins are composed of carbon, hydrogen, oxygen, nitrogen and other
chemical elements. 2. A wide variety of chemical and physical changes takes
place in the protoplasm. 3. Minute granules and globules of various sizes and
abundance are suspended in protoplasm. 4. Sensitivity of living material to outer
changes is based on the unusual irritability of protoplasm. 5. Living material can
convert lifeless organic matter into a new protoplasm. 6. A droplet of the liquid
was examined under the microscope. 7. A cell usually contains a single nucleus.

      Ex. 7. Put the verbs in brackets into a proper tense form.

1. All living matter (to consist) of protoplasm. 2. Protoplasm (to be*) the
physical basis of life. 3. Nearly every organism (to contain) both lifeless and
living matter. 4. Protoplasm (to have*) the same appearance, chemical
composition and the same characteristics in both animals and plants. 5. Various
processes (to go*) on in the body of the plant. 6. Scientists not yet (to yield) a
knowledge of the fundamental chemical or physical organisation of the
protoplasm. 7. Scientists (to become*) convinced that protoplasm (to have*) a
very complex structure.

      Ex. 8. Put general and disjunctive questions to the sentences of ex. 6.

       Ex. 9. Translate the sentences below following the rules of the sequence
of tenses.

1. He wrote in his letter that he would come. 2. I thought that you knew about it.
3. I heard that he had worked at this problem. 4. I remembered that you had
these magazines. 5. He says that he lived in Moscow. 6. He said that he lived in
Moscow. 7. He said that he had lived in Moscow. 8. He said that his son would
be a doctor. 9. Darwin's father thought that his son would be a doctor. 10.