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VI. In the text “Macromolecules” find the words with the following meanings. Use these words in the sentences of your own

  1. to unite into a chemical compound;

  2. marked by extraordinarily great size, number, or degree;

  3. any of various organic compounds characterized by an oxygen atom attached to two carbon atoms;

  4. a usually liquid substance capable of dissolving or dispersing one or more other substances;

  5. being most frequent or common; prevailing;

  6. a tiny globe or ball especially of a liquid; a droplet;

  7. the shortening and thickening of a functioning muscle or muscle fiber;

  8. having a spiral form;

  9. distinctive among other examples or cases of the same general category.

VII. Find the following words and expressions in the text “Macromolecules”. Explain the differences in their meanings and usage. Use these words and expressions to fill in the gaps in the sentences below

a) Constitute; make up.

b) Contain; include; be composed of; consist of.

  1. Each cell typically _______ a central, usually spherical, nucleus and an outermore heterogeneous region, termed the cytoplasm.

  2. Up to 70% of your total body weight is _______ of water.

  3. Cigarettes which _______ less than 0.8 mg nicotine can be classified as "light".

  4. Symptoms of the disease _______ tiredness and loss of memory.

  5. Water is ________ hydrogen and oxygen.

  6. Doctors are struggling to _______ the epidemic.

  7. The environment of an organism also _______ the other organisms in its surroundings.

  8. It is sometimes difficult to believe that the different groups living within our borders ________ a single society.

  9. Hereditary information is carried by large molecules known as genes which are ________ nucleic acids.

  10. The rise in crime ________ a threat to society.

  11. Human cells are in many fundamental respects similar to those that ________ all the other animals and plants on the Earth.

GRAMMAR IN USE: WORD FORMATION 1

I. Look at the words below. They are all the derivatives of one word – solve. Explain the meaning of each word. What morphological means have been used to produce these words? What other means of word formation do you know?

Solvent; insoluble; dissolve; soluble.

II. Regard the suffixes enlisted below. What parts of speech are formed by means of these suffixes? Find the words containing such suffixes in the text. What do they mean?

-Ance/-ence; -ity; -ness; -ment; -ion/-sion/-tion; -age; -sys; -y; -ty; -ly; -(a)ble; -ive; -en; -ful;-er/-or; -ish; -less.

III. Fill in the following table as in the model

verb

noun

adjective

adverb

dissolve

solute; solution

soluble; insoluble

---

contract

function

reproduce

store

maintain

diversify

connect

recognize

compose

generate