Download Cell Transport

Topic 14
LT- Today, I can identify the proteins of the cell
membrane by citing from texts and diagrams.
What are the proteins of the cell membrane?
What are the functions of the cell membrane?
Do Now- What is the function of the cell
membrane?
The cell membrane controls movement of
materials in and out of the cell and it identifies
substances (such as hormones) that the cell
works with.
Phospholipid Bilayer (Lipid Bilayer)
Proteins of the Cell Membrane
p.177
In your notebook:
1. Color the proteins (each should be a different
color)
2. Label the proteins
3. Define the function of the protein.
Cell-Surface Marker
The carbohydrates of these structures are specific to the type of cell (ex. liver cells have
the same carbohydrates but different carbohydrates than a heart cell). Glycoproteins of
these structures help like cells work together.
*Receptor Proteins
Bind to substances (such as hormones outside of the cell). When this happens actions take
place inside the cell.
*Enzymes
Break down and build substances.
*Transport Proteins
Move substances against the concentration gradient (lower to higher) and move
substances that are too large to pass through the lipid bilayer.
P. 14
Topic 15
LT- Today, I can describe the movement of
materials through the cell membrane by
analyzing diagrams.
How do different substances move through the
cell membrane?
What is passive transport and active transport?
Cell Transport
Homeostasis/Equilibrium
A Concentration Gradient
Passive Transport
No ATP is used
Diffusion- Movement of a substance with the
concentration gradient (from a higher
concentration to a lower concentration).
Simple Diffusion
No ATP is used
Active Transport
ATP is required.
Movement of a substance against the
concentration gradient (from lower
concentration to higher concentration).
Transport proteins are needed to move
materials.
Active Transport
Facilitated Diffusion
No ATP
Some substances do not easily diffuse
through the cell membrane even though they
are moving from higher concentration to lower.
Transport proteins are needed.
1. Channel Proteins- move Ions,
sugars, amino acids
2. Carrier Proteins- move substances
that have an irregular shape.
Osmosis
No ATP
The movement of water through the cell
membrane.
LT- Today, I can develop my understanding of
plant cells by comparing and contrasting them
to what I know about animal cells.
What are the structures that plant cells have
that animal cells do not?
What is photosynthesis and where does it
occur?
Plant Cells
Plant cells have all the organelles that
animal cells do, but they also contain:
CO2 + H2O
C6H12O6 + O2
What are the substances that go into this
process?
What are the substances that are a result of
this process?
What do you think this process is?
Where does this process occur?
Photosynthesis- plants, algae and certain
prokaryotes use sunlight to make organic
compounds from CO2 and H2O.
Autotrophs
Organisms that photosynthesize, also use this
energy through cellular respiration.
You are a doctor and your patient is complaining
about being tired all of the time.
Based on the science you have learned, what
tests do you want to run on your patient and
why?
(Your tests can be done on the cells and any
organ of any system of the body)
Use ACE format to write your response.
p.3 A test that would determine if it is the combination of
glucose and the glucose indicator with heat that causes the
reaction and not just one of the substances and heat would be to
test the glucose and glucose indicator by themselves.
p. 4 The inside of the cell changed from milky white to blueblack.
Yes positive
1. Iodine diffuses into the cell causing the starch to
change colors.
2. No. The contents (water) of the beaker
containing starch indicator did not change color.
P. 4
3. Yes. When water surrounding the cell was tested,
the result was positive.
4. The starch indicator diffused into the cell and the
glucose diffused out of the cell.
5. The starch did not diffuse.
6. The membrane would allow small particles
(substances) to pass through. Large particles
such as starch could not pass through.
7.
Learning Target: Today, I can make connections
between genetic diseases/disorders and cellular
function by researching a genetic disease and
applying my understanding of diffusion to how
this genetic disease affects the body.
Driving Question: How does the genetic disease
type 1 diabetes disrupt diffusion through the
cell membrane?
Student Background: Students have learned about
the role cellular respiration plays in making energy
for the body. They have learned that glucose and
oxygen and are needed in the process of cellular
respiration. They have also learned that genes
make necessary proteins for the body to function
and that mutations can alter the genes creating
proteins that do not do their job.
Goal: Students will research and write about
type1diabetes and they will create a diagram that
will demonstrate their understanding of how
diabetes affects the organism at the cellular level.
Glucose and oxygen are needed by the mitochondria of
the cells to make energy (ATP) during cellular respiration.
How does type 1 diabetes effect diffusion?
• Insulin is not made or is made at lower levels.
• Insulin attaches to the cells receptors allowing the
transport proteins to open for glucose to enter the
cells.
• Without insulin the glucose cannot enter the cells.
With less insulin, less glucose enters the cells.
How does type 2 diabetes effect diffusion?
• Insulin is made, but the receptors do not
respond to the insulin like a normal body.
• Without the receptors responded and
initiating the opening of the transport
proteins, glucose cannot enter the cell.
How does sickle cell anemia effect diffusion?
• Red blood cells carry oxygen to the cells.
• A person with sickle cell has some cells that
are sickle shaped.
• Because sickle cells have an irregular shape,
they cause blockages in the blood vessels.
• Less oxygen will diffuse into the cells due to
the blockages.