Download Warm-Up

Warm-Up
• Take out a clean sheet of paper and answer the
following question:
• What is a cell?
Warm-Up
• A cell is defined as:
“The structural, functional and biological unit
of all organisms.”
Source: www.biology-online.org
Interesting Facts!
• A cell is the smallest unit of an organism that is
classified as living, making it the “building block
of life”
• Humans have about 100 trillion cells
• There are about 2.5 trillion blood cells in your
body at any given time.
• 25 million new cells are being produced every
second in your body.
• Longest cell can reach from the toe to the lower
brain stem.
Objectives
• 1. The students will be able to identify the major
organelles in a cell.
• 2. The students will be able to define the
functions of each major organelle.
Today’s Agenda
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Warm-up
Main cell organelles PowerPoint presentation
Labeling worksheet
Group Poster activity
Closure
Main Cell Organelles
Main cell organelles
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Nucleus
Mitochondrion
Rough endoplasmic reticulum (RoughER)
Smooth endoplasmic reticulum (SmoothER)
Golgi apparatus
Ribosomes
Cell Membrane
Nucleus
The “brain” of the cell
• Contains genetic
information
necessary for
reproduction, growth
and metabolism of
the cell
Mitochondria
The cells “power
house”
• Converts energy
into forms that
are useable by
the cell.
• Site of cellular
respiration,
generating ATP,
or the fuel for
the cells
activities
Rough Endoplasmic Reticulum (Rough
ER)
• Function in the processing and transport of proteins
made by ribosomes
• Gets the name rough for the ribosomes that cover its
surface, making it appear bumpy
Smooth Endoplasmic Reticulum (SER)
• Work with certain
enzymes in
providing storage
space and surface
areas.
• Controls
movement of
newly made
proteins to their
proper locations
Golgi Apparatus
• Modify, sort and
package proteins and
other materials from
ER for storage in the
cell or secretion
outside the cell.
Endomembrane System
Ribosomes
• Make proteins
• Synthesize and
assemble amino acids
to form specific
proteins
• Located throughout
the cell and on the
RoughER
Cell Membrane
The cells “Gate Keeper”
• “Plasma Membrane”
• Encloses the cell and its contents.
• Selectively Permeable, controls what enters and
leaves the cells
Labeling!
Group Poster Activity
• Each group will be assigned one of the cell organelles we
just learned about.
1- Nucleus
2-Mitocondria
3- Rough and Smooth ER
4-Golgi Apparatus
5-Ribosome
6-Cell Membrane
• With your notes and one another construct a poster on
your given cell organelle. Include the following:
- a drawing of the organelle
- a drawing of pneumonic device for the function of each
organelle.
- description of its function in the cell.
Exit Card:
On a note card, write one thing you learned in
class today.