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Eukaryotic Cell Structures

good stuff
by

Jeanette Morales

on 6 October 2014

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Transcript of Eukaryotic Cell Structures

END OF SECTION
In the nucleus of a cell, the DNA is usually visible as
a dense region called the nucleolus.
the nuclear envelope.
granular material called chromatin.
condensed bodies called chloroplasts.
7-2

What is the function of the mitochondria?
Mitochondria and Chloroplasts
Organelles
– structures within a eukaryotic cell.
Translation: “
Little Organs


Cell biologists divide the eukaryotic cell into two major parts:
Nucleus
Cytoplasm
– contains
the other organelles.
Eukaryotic Cell Structures

Lysosome
– a vacuole that contains digestive enzymes. It is used to break down bacteria and food taken in by the cell.
Golgi apparatus
– receives, modifies, and ships vacuoles (packages). It’s the UPS of the cell.
Golgi Apparatus
Rough ER
– uses ribosomes to make proteins, modifies them, and sends them to the golgi.

Smooth ER
–synthesis organelle of lipids , detoxifies dangerous chemicals (liver) double S.Area when toxin bombard cell, muscle cells (helps contraction)

Endoplasmic Reticulum
Which of the following is a function of the cytoskeleton?
manufactures new cell organelles
assists in movement of some cells from one place to another
releases energy in cells
modifies, sorts, and packages proteins
7-2
Chloroplasts are found in the cells of
plants only.
plants and some other organisms.
all eukaryotes.
most prokaryotes.
7-2

Functions of the
Cytoskeleton
:
Keeping Cell Shape
Movement within the Cell

The cytoskeleton is made up of:
microfilaments
microtubules
Cytoskeleton
Contractile vacuole
The paramecium contains a
contractile vacuole
that pumps excess water out of the cell.
Vacuoles
There are two types of ER—rough and smooth.
Endoplasmic Reticulum
Ribosomes
Two functions of vacuoles are storing materials and helping to
break down organelles.
assemble proteins.
maintain homeostasis.
make new organelles.
7-2
The
nucleus
is the control center of the cell.





The nucleus contains the cell's
DNA
which is the instructions for making proteins.
Nucleus
Eukaryotic Cell Structures
Which of the following is NOT a function of the Golgi apparatus?
synthesize proteins.
modify proteins.
sort proteins.
package proteins.
7-2
Centrioles help to organize the cytoskeleton during cell division.
Cytoskeleton
Cytoskeleton
Proteins
are assembled on
ribosomes
during protein synthesis.

Ribosomes are found in the
cytoplasm
and
attached to the rough endoplasmic reticulum
.
Ribosomes
Chromatin
Nuclear pores
Nuclear envelope
Nucleolus
The Nucleus
Chloroplasts 

Found:
Only organisms that do photosynthesis such as
plants
and
algae
.

Function:
capture energy from sunlight and convert it into sugar in a process called
photosynthesis
.
Chloroplast
Mitochondria and Chloroplasts 
Mitochondria 

Found:
All Eukaryotes

Function:

convert food into useable energy through the process of
cellular respiration
.
Mitochondrion
Mitochondria and Chloroplasts
Vacuole
Central Vacuole
– large storage space in
plant cells
used for storing water. It gives the cell internal pressure.
Vacuoles
Animal Cell
Centrioles
Nucleolus
Nuclear envelope
Nucleus
Cell membrane
Rough endoplasmic reticulum
Mitochondrion
Golgi apparatus
Ribosome (attached)
Ribosome (free)
Smooth endoplasmic reticulum
Eukaryotic Cell Structures
Chloroplast
Cell membrane
Cell wall
Rough endoplasmic reticulum
Smooth endoplasmic reticulum
Nucleus
Nucleolus
Vacuole
Golgi apparatus
Mitochondrion
Ribosome (attached)
Ribosome (free)
Nuclear envelope
Plant Cell
Eukaryotic Cell Structures
moving substance across microtubules
kinesin
Full transcript