Transcript Cell Membrane

TEACHER PREPARATION
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Run-off the Cell Venn Diagram – Cell
Function Table and Questions
You will need two fly swatters & a copy
of the printed questions-answers for
the SWAT game.
These are the questions that the teacher will
read for the Swat Game – Answers Provided
Biology 4B
Investigate and Identify
cellular processes
including homeostasis and
function of cellular parts.
HOMEOSTASIS
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Maintaining a stable internal
environment
Organisms must be able to do
this or they die
Examples:
You get too hot, you sweat
You get too cold, you shiver
You take in too many fluids you
urinate more often
You run and your heart speeds
up to get oxygen to all parts of
your body
Your home keeps you safe;
homeostasis keeps your body
safe
Use the next slide to list the organelles names
in the correct category on your Venn diagram.
Homeostasis
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Cells must maintain a stable
internal environment
Cells depend on their organelles
to keep them alive and make
adjustments to the environment
On the next few slides, add to
your Venn diagram chart by
writing the job/function of each
organelle by its name and
drawing a picture of the
organelle.
How are plant & animal cells alike &
different?
Place the organelle names on the Venn diagram.
Cell Wall
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The cell wall surrounds
both plant & fungi cells. It
is outside of the cell
membrane
Its is made of a stringy
material called cellulose.
Its function is to support
the cell – animal cells are
attached to bones for
support
Cell Membrane
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The cell membrane
surrounds all cells
Its job/function is to control
and enter what leaves a
cell
It is an example of an
organelle that exhibits
homeostasis and keeps a
cell alive. If it lets in
poisons or lets out or in too
much water the cell dies.
Mitochondria
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Found in both plant and
animal cells. (hot dog
shaped)
Its function is to break
down glucose into an
energy form the cell can
use. (ATP)
Active cells have lots of
mitochondria. Example:
Muscle cells
Chloroplasts
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Found only in plant
cells. (Greencontain chlorophyll)
Its function is to use
sunlight to turn
water & carbon
dioxide into
glucose.
(Photosynthesis)
Ribosomes
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Found in all cells. Look like
small dots on the
Endoplasmic Reticulum.
Can be found free-floating
too.
Its function is to link amino
acids together and form
proteins. (Protein
synthesis)
Ribosomes get their
directions from the DNA
Nucleus
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Found in all eukaryotic
cells.
Control center of the
cell
This is where the DNA
is found in eukaryotic
cells
Cell Locomotion or Movement
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Cilia – tiny hair-like
structures used for
movement
Top picture-human
respiratory cells with cilia
to wave dirt and mucous
out of the lungs
Bottom picture – a single
– celled Paramecium
that uses cilia for
swimming
Cell Locomotion or Movement
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Flagella – long, thin hairlike structures used for
movement
Top picture-human
sperm cells with flagella
used for swimming to the
egg
Bottom picture – different
species of E. Coli
bacteria with varying
number of flagella
Eukaryotic Cells – are cells with true
nucleus-like the two cells shown below
Prokaryotic Cells – primitive cells
without a true nucleus; they have freefloating DNA but NO nucleus-Bacteria
DNA No
Nucleus
Binary Fission – How prokaryotic
bacteria cells reproduce
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They make a
copy of their DNA
and split
The two cells are
clones of one
another
Practice Questions
The swordfish has a heat-generating organ that
warms its brain and eyes up to 14°C above the
surrounding water temperature? What
structures are likely to be found in high
concentrations in the cells of this organ?
A. Chromosomes
B. Mitochondria
C. Nuclei
D. Ribosomes
Practice Questions
What process is shown?
A.
B.
C.
D.
Cellular Ingestion
Psuedopod Formation
Cell Wall Digestion
Binary Fission
Practice Questions
The diagram shows different parts of human
sperm cell. Which part is most likely
specialized for mobility?
A.
B.
C.
D.
Q
R
S
T
Practice Questions
Which of these is a function of the cell
membrane in all cells?
A.
B.
C.
D.
Providing cellular nutrients
Preserving cellular wastes
Neutralizing chemicals
Maintaining homeostasis
Practice Questions
Energy conversion, within an animal cell, would
be severely limited by removal of the cell’s?
A.
B.
C.
D.
mitochondria
chloroplasts
plastids
lysosomes
SWAT GAME
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Your teacher will divide you into two teams
Each team will number off starting with the
number 1.
Number 1 will go to the screen first and
compete against number 1 on the other team
Your teacher will read a definition. When you
know the answer – swat it on the screen.
The first team to SWAT it will receive a point.
The above steps will then be repeated with
Player 2 on each team. Then Players 3 etc.
Cilia
Ribosomes
Eukaryotic
Cell membrane
Homeostasis
Prokaryotic
Binary Fission
Flagella
Cell wall
Chloroplasts
Nucleus
Mitochondria