Download 2. Looking Inside Cells PowerPoint

How Do the Parts of a Cell Work?
How Do Cells Work Together in an
Organism?
Looking Inside
Cells
How Large Are Cells?
 Cells
come in many shapes and sizes.
 What
 Lets
about the cells in your body?
do some calculations to help you get
an idea of the size of human cells.
INQUIRY FOCUS Infer
Procedure:
Materials:
metric ruler
meter stick
calculator
1. Look at the organism in the drawing. The
organism
is an amoeba (uh MEE buh), a large single-celled
organism. This type of amoeba is about 1 mm
long.
2. Measure your height in meters with the meter
stick. Multiply your height in meters
by 1,000 to get your height in millimeters. How
many amoebas would you have to
stack end-to-end to equal your height?
 http://learn.genetics.utah.edu/content/c
ells/insideacell/
 http://www.washingtonpost.com/news/s
peaking-ofscience/wp/2014/10/23/weeks-afterwinning-a-nobel-prize-for-his-microscopeeric-betzig-just-revolutionized-microscopyagain/
Looking Inside Cells
A Typical Animal Cell
Each kind of cell structure has a
different function within a cell.
Where
is the cell membrane?
How Do the Parts of a Cell
Work?
 Each
kind of structure has a different
function within a cell
 Organelles
in a Cell:
Cell Wall
A
rigid layer that surrounds the cells of
plants which helps support, protect, and is
made of cellulose
Cell Membrane
 Controls
which substances pass into and
out of the cell
Nucleus

The cells control center,
directing all of the cells
activities.

The nucleus is
surrounded by a
membrane called the
nuclear envelope

Chromatin, thin strands
of material that fill the
nucleus, contain
information for
directing a cells
functions.
Ribosomes
 Small
grain-shaped organelles that
produce proteins
Mitochondria
 Convert
energy stored in food to energy
the cell can use to live and function
Endoplasmic Reticulum
A
maze of passageways, often called the
ER, is an organelle with a network of
membranes that produces many
substances for the cell to function
properly
Golgi Apparatus
 Receives
proteins and other newly formed
materials from the ER, packages them,
and distributes them to other parts of the
cell or outside the cell.
Vacuoles
 Stores
water, food, or other materials
needed by the cell. Vacuoles can also
store waste produces until the wastes are
removed.
Chloroplasts
 Capture
energy from sunlight and
changes it to a form of energy cells can
use for making food.
Lysosomes
 Break
down large food particles into
smaller ones. They can also break down
old cell parts and release the substances
so they can be used again
Looking Inside Cells
Ribosomes
Chromatin
Nucleolus
Nuclear
envelope
Pores
What does the nuclear envelope do?
In what types of cells would
What do ribosomes do?
you expect to find a lot of mitochondria?
Organelles of a Cell
The structures of a cell look as different as their
functions. Where do you find these structures in
the cell diagram?
Looking Inside Cells
Plant Cell
These illustrations show
typical structures found in
plant cells. What is the
function of each structure?
Looking Inside Cells
Animal Cell
These illustrations show
typical structures found in
animal cells. What is the
function of each structure?
Looking Inside Cells
Compare and contrast the structures present in plant cells and animal
cells.
Looking Inside Cells
Golgi Apparatus
How can this sentence be completed? The Golgi
Apparatus is an organelle that ___________ and
___________ materials made in the
__________.
Looking Inside Cells
Model for a Cell
Function
How do the parts of
a cell function in
ways that are
similar to the parts
of a building?
Looking Inside Cells
Chloroplast
A chloroplast captures energy from sunlight and changes it
to a form of energy cells can use in making food. Chloroplasts make leaves green
because leaf cells contain many chloroplasts.
How Do Cells Work Together in an
Organism?
 Multicellular
 Unicellular
 Different
– made of many cells
– made of one cell
types of cells look different from
one another and also perform different
functions
Looking Inside Cells
Levels of Organization
Living things and nonliving things as well are organized in levels of increasing
complexity. What are the levels of organization of your school building?