VII. Using additional sources of information prepare a report on one of the following topics and present it to the class

· The interpretation of the notion of life from the point of view of natural sciences, philosophy, theology, astrology, cultural studies, etc.

· Life and forms of its presentation on the Earth and other planes. Facts and hypotheses.

· Objectives and research methods of modern biological investigations. Science versus ethics.

Unit 2

Lesson 1

MACROMOLECULES

PRE-READING TASKS

I. Answer the following questions

· What organic macromolecules do you know?

· What are the main properties of lipids, carbohydrates, proteins and nucleic acids?

· What role do these substances play to sustain life?

II. Listen to the following words and practice their pronunciation

Substance; carbohydrate; lipid; protein; starch; dextrin; cellulose; glycogen; monosaccharide; disaccharide; sucrose; lactose; maltose; invertebrate; chitin; arthropod; triglyceride; hormone; haemoglobin; insulin; deoxyribonucleic acid; ribonucleic acid.

READING COMPREHENSION AND VOCABULARY DEVELOPMENT

I. Match each word on the left to its correct definition on the right

1) compound, n 2) diet, n 3) yield, v 4) distinguish, v 5) recognize, v 6) coin, v 7) trigger, v 8) accomplish, v 9) backbone, n 10) fibre, n 11) strand, n 12) sequence, n

a) order of succession; b) to initiate, actuate, or set off; c) a distinct substance formed by chemical union of two or more ingredients in definite proportion by weight; d) a thread or a structure or object resembling a thread; e) to make, create or invent; f) food and drink regularly provided or consumed; habitual nourishment; g) the longest chain of atoms or groups of atoms in a usually long molecule; h) an elongated or twisted and plaited body resembling a rope; i) to bring to completion; j) to produce a result; k) to mark as separate or different; l) to admit as being of a particular status.

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Discussion	\|	II. Read the following text paying attention to the highlighted words. Explain or interpret the contextual meaning of the underlined phrases

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