Transcript How does the cell work?

Cells and cellular transport
What the state wants you to know
Cell Objectives
• State standard - HS-LS1-3. Provide evidence that
homeostasis maintains internal body conditions
through both body-wide feedback mechanisms
and small-scale cellular processes.
• Cellular processes include (a) passive transport
and active transport of materials across the cell
membrane to maintain specific concentrations of
water and other nutrients in the cell and (b) the
role of lysosomes in recycling wastes,
macromolecules, and cell parts into monomers.
Unpacking the standard
Students should be able to:
• 1. Correctly label a eukaryotic cell.
• 2. Correctly label a nerve cell.
• 3. Describe the job of the cell the parts identified in the eukaryotic cell.
– Identify the cell wall, chloroplast in a plant cell.
• 4. Distinguish between plant, animal and bacterial cells.
– Compare and contrast the similarities and difference between these three cell
types.
• 5. Identify prokaryotic and eukaryotic cells
• 6. Describe osmosis of water in and out of the cell. Define and use the terms
hypotonic, hypertonic and Isotonic correctly.
• 7. Describe the process of diffusion of molecules into and out of the cell.
• 8. Describe active and passive transport systems. Give an example of each.
• 9. Describe the activation of a nerve impulse and how they transmit a message
in the human system.
How will we learn the first three
standards?
Assignments :
1. Look up the cell parts listed on the hand out
given to you in class. Watch the video to
review the function of the cells parts. Write
your answers on the sheet provided.
2. Color and label a eukaryotic animal cell and
plant cell. Color and label the nerve cell
picture as well.
Jobs that require cell knowledge
• I have assigned you a Newsela article. Log
into Newsela and the click on your
assignments. Read the article. Complete the
quiz when your are done.
• Please answer this question in your notebook
regarding the article. Would you be interested
in working in a lab?
• Biology Class code (38XSJJ)
Watch the cell Video
https://www.youtube.com/watch?v=URUJD5NEXC8
Here is a really cool view of cellular
processes. https://www.youtube.com/watch?v=WFCvkkDSfIU
The inner life of a cell
• http://www.ted.com/talks/david_bolinsky_ani
mates_a_cell?language=en
Compare and Contrast the following:
1) Prokaryotic and Eukaryotic cells
2) Animal cells and plant cells
• Create a Venn diagram that compares the these two ideas.
Put those notes in your notebook with the title above.(Use a
separate page for each.) Leave space for us to add notes
during our class discussion.
• I have added several URL’s below to help you.
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https://www.youtube.com/watch?v=z_6FJ4r3hqs
https://www.youtube.com/watch?v=k-FsSXXFKTo
https://www.youtube.com/watch?v=dOQKPM_5PEY
Here is a great web game to help with this task as well.
http://www.sheppardsoftware.com/health/anatomy/cell/index.htm
– Click here to link you to your HW review sheets for this
material.
Osmosis and Diffusion
Describe the process of diffusion of molecules
into and out of the cell.
https://www.youtube.com/watch?v=zuNMVzTeCtw
Student Notes
• Define the following words in your notebook
and use them correctly in a paragraph
describing the movement of water in the cells
in the potato.
– Osmosis
– Diffusion
– Semi-permeable membrane
– Solute
– Solvent
Hypotonic, hypertonic and Isotonic
• After watching the video and based on our
work in the potato lab, you should be able to;
– Describe the process of osmosis and diffusion in a
cell.
– You should be able to describe and define the
concept of isotonic, hypertonic and hypotonic
conditions.
• Create a drawing of 3 conditions during the potato lab
that demonstrate these words in action.
Plasma Membrane
• The primary function of the plasma
membrane is to protect the cell from its
surroundings. Composed of a phospholipid
bilayer with embedded proteins, the plasma
membrane is selectively permeable to ions
and organic molecules and regulates the
movement of substances in and out of cells.
Plasma Membrane
Another View
Notes for the membrane video
• Copy a picture of the plasma membrane into
your notebook. Make sure you include an
explanation of what a phospholipid is and
what role it plays in making the membrane
semi-permeable. (see the notes page on my
web site for our class notes picture of the
membrane.)
Plasma Membrane Explained
https://www.youtube.com/watch?v=moPJkCbKjBs
Passive vs Active Transport
https://www.youtube.com/watch?v=kfy92hdaAH0
• Compare and contrast active vs passive
transport across the cell membrane. Go to
this web site to help you complete the task.
• http://www.diffen.com/difference/Active_Tra
nsport_vs_Passive_Transport#Video_explainin
g_the_differences
– The video provided will help you as well. Make a
chart to help with the comparison. An example is
provided on the next page.
Types of Transport
• Passive
Active
• How does it work?
• What does each need to do the job?
– Include the types of proteins that do the work
• Provide examples of each type of transport