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Notes to the texts:

DNA – дезоксирибонуклеїнова кислота (ДНК).

RNA – рибонуклеїнова кислота (РНК).

ATP – аденозинтрифосфат (АТФ) або аденозинтрифосфорна кислота, аденілпірофосфорна кислота.

either … or – або … або

V. Answer the following questions to check how carefully you have read the text:

1. What is the basic structural and functional unit of every organism? 2. How many types of cells are there? What are they? 3. What organisms consist of prokaryotic cells? 4. What organisms consist of eukaryotic cells? 5. What are the basic features of all cells? 6. What is a major difference between prokaryotic and eukaryotic cells? 7. What is the cytoplasm? 8. What do biological membranes consist of? 9. What are the cellular components that carry out protein synthesis? 10. What are the tasks of an endomembrane system in the cell? 11. What process do we call cellular respiration? 12. What role do chloroplasts play in plants and algae?

Vocabulary exercises

I. Translate the following words and word combinations into Ukrainian and use them in the sentences of your own:

to consist of; to include; unicellular/multicellular organisms; basic features; substance; to contain; to carry; according to; a major difference; location; a variety of tasks; to be absent; two types of cells; an example of the disparity; to have high rates; a few million; tiny; with the help of.

II. Choose the synonyms of the following words from the text. Translate them:

unicellular, major, substance, location, rate, particularly, prominent, to convert

percentage, main, position, matter, multicellular, noticeable, especially, to turn

III. Choose the antonyms of the following words from the text. Translate them:

complex, to contain, tiny, double, presence, unique, high, active, direct, to extract, to absorb

l ow, indirect, to insert, single, passive, common, to exude, enormous, absence, to exclude, easy

IV. Match the word (1-18) and its definition (a-r):

1. ribosomes

a. a lipid made up of glycerol joined to two fatty acids and a phosphate group

2. nucleolus

b. a macromolecule serving as a catalyst

3. chromosomes

c. one of two prokaryotic domains, the other being Bacteria

4. chloroplasts

d. the contents of the cell bounded by the plasma membrane; in eukaryotes, the portion exclusive of the nucleus

5. mitochondria

e. site of genes for rRNA synthesis

6. nucleus

f. small, complex assemblies of protein and RNA, often bound to endoplasmic reticulum

7. archaea

g. long threads of DNA that form a complex with protein

8. eukaryotic cell

h. Bacteria-like elements with membranes containing chlorophyll, a photosynthetic pigment

9. prokaryotic cell

i. the semifluid portion of the cytoplasm

10. protist

j. the membrane at the boundary of every cell that acts as a selective barrier, regulating the cell’s chemical composition

11. organelle

k. a type of cell lacking a membrane-enclosed nucleus and membrane-enclosed organelles

12. plasma membrane

l. the catabolic pathways of aerobic and anaerobic respiration, which break down organic molecules

13. cytoplasm

m. any of a group of large biological molecules, including fats, phospholipids, and steroids, that mix poorly, if at all, with water

14. cytosol

n. any of several membrane-enclosed structures with specialized functions, suspended in the cytosol of eukaryotic cells

15. enzyme

o. bacteria-like elements with double membrane

16. cellular respiration

p. an informal term applied to any eukaryote that is not a plant, animal, or fungus

17. phospholipid

q. structure (usually spherical) surrounded by double membrane that contains chromosomes

18. lipid

r. a type of cell with a membrane-enclosed nucleus and membrane-enclosed organelles