1.General cell characteristics
The science that studies the structure and function of cells is called cytology.
A cell is an elementary structural and functional unit of the living.
The main parts of the cell are the plasma membrane, cytoplasm, nucleus.
The plasma membrane protects the internal contents of the cell from damage.
The plasma membrane maintains the constant shape of the cell, ensures the
communication of the cells with each other, selectively passes the necessary
substances inside the cell and removes metabolic products from the cell.
The inner semi-liquid contents of the cell is called the cytoplasm.
The cytoplasm is the internal medium of the cell and in it are the components of the
cell - organoids.
The nucleus contains genetic information and controls the vital activity of the cell.
From the cytoplasm, the nucleus is separated by a membrane consisting of two
membranes.
In the shell of the nucleus there are numerous pores so that various substances can get
from the cytoplasm into the nucleus, and vice versa.
The inner contents of the nucleus is called karyoplasm or nuclear juice.
In the nuclear juice are chromatin and the nucleolus.
The chromatin is DNA threads. Hereditary information is stored in DNA.
The function of the nucleoli is the synthesis of RNA and proteins, from which
organoids, ribosomes, are formed.
New terms
Cell
Plasma
membrane
Cytoplasm
Nucleus
Nucleolus
Ribosomes
Hereditary
information
DNA
Клетка
Плазматическая
мембрана
Цитоплазма
Ядро
Ядрышко
Рибосомы
Наследственная
информация
ДНК
Practical work
1.Write the missing words in the text.
The science that studies the structure and function of cells is called _________ .
A cell is an elementary__________ and ____________ unit of the living.
The plasma _________
protects the internal contents of the _________ from
damage.
The _______ containsgenetic information.
2.Write the name of the cell parts
2. Write the missing letters in words
1.Cy__ol__gy
2. Ce_l
3. Pl__s__a me__bra__e
4.Cy__op__a__m
5. N__c__e__s
6. N__c__eo__us
Crossword
5
6
2
4
3
1
7
1.
2.
3.
4.
5.
6.
7.
It contents of the nucleus is called karyoplasm or nuclear juice.
It protects the internal contents of the cell from damage.
It is DNA threads.
It contains genetic information and controls the vital activity of the cell.
The science that studies the structure and function of cells.
The inner semi-liquid contents of the cell is called ….
The function of the nucleoli is the synthesis of RNA and proteins, from which
they and ribosomes, are formed.
Test 1
1. What type of cell is shown ?
a. animal cell
b. plant cell
c. impossible say
2. What is shown by the labeling line X?
a. Cell wall b. cell membrane
c. cell membrane
3. What is shown by the labeling line Y?
a. Cytoplasm b. nucleus
c. vacuole
4.
a.
b.
c.
5.
a.
b.
c.
6.
a.
7.
a.
b.
c.
8.
a.
9.
a.
What is the job of nucleus?
To control what substances go into and out of the cell
To make a plant cell its shape
To control what happens inside the cell
What is the job of the cell membrane ?
To control what substances go into and out of the cell
To give a plant cell its shape
To control what happens inside the cell
Which of these is only present in plant cells?
Membrane
b. wall
c. nucleus
What is the job of the cell wall?
To control what substances go into and out of the cell
To give a plant cell its shape
It is where photosynthesis is made
The science that studies the structure and function of cells is called
Cytology
b. biology
c. genetics
The inner contents of the nucleus is called.
Orange jam b. nuclear juice
c. animal jelly
Test 2
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