Download Cell Type File - Galena Park ISD Moodle

Types of Cells
In this presentation you will:
 explore prokaryotic and eukaryotic cells
Next >
Introduction
Cells are often
described as the
building blocks of life.
This is because all living
things are made of
one or more cells.
All the processes needed
for life take place in cells.
Next >
Introduction
Some organisms, like
bacteria, are unicellular.
Unicellular
This means they are
made of a single cell.
Others, like plants and animals
(including humans) are
multicellular.
Multicellular
This means that they are
made of many cells.
Multicellular
Next >
Cell Theory
There are three facts about cells:
 cells are the basic unit of life
 all living organisms are made
of at least one cell
 all cells come from other cells
This is known as the
Cell Theory.
Individual cells are
microscopic, which means
that they can only be seen
through a microscope.
Next >
Prokaryotes and Eukaryotes
There are two types of cell.
prokaryote cell
Prokaryote cells were the
first, and for billions of
years, the only form of life.
Eukaryote cells are
more complex.
eukaryote cell
Unicellular organisms can
be either prokaryotic or
eukaryotic.
All multicellular organisms are eukaryotic.
Next >
Similarities
Prokaryotes and eukaryotes
are similar in several ways.
Prokaryote cell
 Both contain genetic
material (DNA).
 Both contain
cytoplasm and are
bound by a cell
membrane.
cell
membrane
cytoplasm
DNA
ribosomes
 Both contain ribosomes.
Ribosomes are the structures
in a cell that make protein.
Eukaryote cell
Next >
Differences
nucleus
chromosomes
They also have some very
important differences.
 In a eukaryote, DNA is held
in a nucleus. It is organized
into chromosomes.
Eukaryote cell
DNA
 A cell without a nucleus is
a prokaryote. DNA is just
curled up in the cytoplasm
of the cell.
Prokaryote cell – no nucleus
Next >
Differences
Eukaryotes are generally larger and
more complex than prokaryotes.
They contain structures
called organelles that are
surrounded by membranes.
Prokaryote cell
nuclear
envelope
endoplasmic
reticulum cytoplasm
mitochondrion
chromatin
Prokaryotes have a very
simple internal structure.
Their organelles are not
surrounded by membranes.
nucleus
nuclear pore
Eukaryote cell
Next >
Question 1
Which of these is a difference between Prokaryotes
and Eukaryotes?
A) The lack of DNA in eukaryotes
B) The lack of a nucleus in eukaryotes
C) The lack of DNA in prokaryotes
D) The lack of a nucleus in prokaryotes
Next >
Question 1
Which of these is a difference between Prokaryotes
and Eukaryotes?
A) The lack of DNA in eukaryotes
B) The lack of a nucleus in eukaryotes
C) The lack of DNA in prokaryotes
D) The lack of a nucleus in prokaryotes
Next >
Question 2
Which of the following is found in both
eukaryotic and prokaryotic cells?
A) Membrane-bound organelles
B) Nucleus
C) Cytoplasm
Next >
Question 2
Which of the following is found in both
eukaryotic and prokaryotic cells?
A) Membrane-bound organelles
B) Nucleus
C) Cytoplasm
Next >
Question 3
Which of the following correctly states three
differences between prokaryotes and eukaryotes?
A) Size, presence of ribosomes, presence of cell
membrane
B) Presence of cell membrane, presence of DNA, size
C) Size, presence of nucleus, presence of membrane
bound organelles
D)Presence of cytoplasm, presence of cell membrane,
size
Next >
Question 3
Which of the following correctly states three
differences between prokaryotes and eukaryotes?
A) Size, presence of ribosomes, presence of cell
membrane
B) Presence of cell membrane, presence of DNA, size
C) Size, presence of nucleus, presence of membrane
bound organelles
D)Presence of cytoplasm, presence of cell membrane,
size
Next >
Summary
In this presentation you have seen:
 Similarities and differences between prokaryote
and eukaryote cells
End >