Your Essential Assignments. 1. a) List the main stages of mitosis, starting with interphase.

I. Quick check:

1. a) List the main stages of mitosis, starting with interphase.

b) At which stage is DNA replicated?

2. Compare mitosis and meiosis in terms of number of cell divisions and number of daughter cells.

II. Fill in the missing words:

III. Use monolingual English dictionary and write down what could the words given below mean:

affinity, give rise to, division, asexual, generation.

IV. Match these words with their definitions:

1.	cell	A.	not having sexual organs or having sex
2.	multicellular	B.	to make sperm join an egg so that a young baby or animal develops
3.	reproduction	C.	a change in the genetic structure of an animal or plant, that makes it different from others of the same type
4.	gamete	D.	the sequence of events that occurs between one cell division and the next cycle
5.	fertilization	E.	the central part of an atom, made up of neutrons, protons, and other elementary particles
6.	chromosome	F.	a group of animals or plants which are all similar and can breed together to produce young animals or plants of the same kind as them
7.	nucleus	G.	to become twice
8.	asexual	H.	the act or process of producing young animals or plants
9.	mutation	I.	a part of every living cell that is shaped like a thread which controls the character, shape etc. that a plant or animal has
10.	species	J.	a type of cell which joins with another cell, starting the development of a baby or other young creature
11.	to double	K.	more than one cell
12.	cell cycle	L.	the smallest part of a living thing that can exist independently

V. Find English equivalents to the following word combinations:

№	Russian term	English equivalent
1.	деление клеток
2.	многоклеточный организм
3.	поврежденные клетки
4.	основа размножения
5.	генетический материал
6.	согласно их размеру
7.	дочерняя клетка
8.	родительская клетка
9.	бесполое размножение
10.	выполняет свои функции
11.	становится видимым
12.	длительность клеточного цикла
13.	во время оплодотворения
14.	жизненный цикл организмов

VI. Give Russian equivalents to the following English terms:

№	English term	Russian equivalent
	to consist of DNA
	wrapped in protein
	matching pairs
	two sets of chromosomes
	identical nuclei
	to be identical to sth.
	without changing the genetic information
	for growth of a multicellular organism
	nuclear division
	human nerve cells
	sexual reproduction
	fertilized cell
	the light microscope
	to contain the same genes
	can exchange genetic material
	genetically different from

VII. Find synonyms among the pool of words:

Pool of words	Synonyms
1) 1.concept /2.damaged /3. injured /4. idea
2) 1.arise /2.appear /3.vary /4. occur /5.change
3) 1.sex /2.mutation /3.gender /4.change /5.alteration
4) 1.essential/2.reproduce/3.important/4.breed/5.necessary

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