Transcript reproduction

REPRODUCTION
Výukový materiál GE 02 - 34
Tvůrce: Mgr. Šárka Vopěnková
Tvůrce anglické verze: ThMgr. Ing. Jiří Foller
Projekt: S anglickým jazykem do dalších předmětů
Registrační číslo: CZ.1.07/1.1.36/03.0005
Tento projekt je spolufinancován ESF a SR ČR
PRIMA 2014
REPRODUCTION
the cell is in suitable environment
(plenty of nutrients)
 > it is growing
 i.e. it is gaining in size
 and it reproduces by division
 it means the number of cells increases
 cell division is a very complicated action
 2 daughter cells arisen

REPRODUCTION
2 daughter cells are
equivalent
 all cell parts must be doubled
before cell division

REPRODUCTION
THE MOST IMPORTANT
Cell wall – external covering of cells by bacteria, fungi, plants
-it determines the shape, protects of external environment
Cytoplasmic membrane – it makes elastic and solid covering of all cells
-admitted into the cell interior as well as outside of it some substance
-(it is semipermeable)
Cytoplasm – internal cell environment
Nucleus – controls ongoing activities in the cell
- manages cell division
Chloroplasts – they are only in plant cells
-they contain chlorophyll and photosynthesis takes place in them
Mitochondria – is used to produce energy from organic compounds
by the presence of oxygen
Vacuoles – they are mainly by plant cells or by bacteria
Endoplasmic reticulum or Golgi apparatus – system of membrane
channels, tubes and vesicles
-used for production, transformation and transportation of proteins and
-other substances
REPRODUCTION
flagellum

the diversity of
division of
prokaryotic and
eukaryotic cells
cell wall
chromosome
cytoplasm
cell
membrane
PROKARYOTIC
CELL
vesicles with
storage
agents
cell bacteria is an
example of simply
shaped cells
without organelles
with an
unrestricted core
REPRODUCTION


the diversity of
division
of prokaryotic and
eukaryotic cells
EUKARYOTIC
CELLS
Chloroplasts
Golgi apparatus
Grains of storage
substances
Mitochondria
Vacuoles
Nucleus
Cell wall
Endoplasmic
reticulum
Membrane
PLANT CELL
ANIMAL CELL
Nucleus
Golgi apparatus
Mitochondria
Membrane
Groove of
membrane
Vesicles with
storage substances
REPRODUCTION
1 – BACTERIA, 2 – YEAST, 3 – RED BLOOD CELL, 4 - PROTOZOA
examples of
prokaryotic and
eukaryotic cells


EUKARYOTIC CELL
PROKARYOTIC CELL
EUKARYOTIC CELL
EUKARYOTIC CELL
REPRODUCTION
bacteria reproduce fastest
 they are very small
 they reduplicate easily and fast all cell
parts
 by most convenient conditions:
 from one bacterium in 20 minutes
there are two bacteria

REPRODUCTION
both of them can divide in another 20
minutes
 > into 4 cells
 4 cells in another 20 minutes into 8 new
cells
 this speed is though just due to
favourable conditions
 bacteria do not reproduce so quickly in
the nature

WORKSHEET
What kind of cell
is this ?
Describe
the pictures.
SOURCES

DOBRORUKA, Luděk J. Přírodopis. 2. vyd. Praha:
Scientia, 1999, 127 s. ISBN 80-718-3168-9.