warm up – 9/16 what are the two main types of cells?
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APA Format and Rough Draft Rough Draft of Research Plan is DUE next time. Rationale – Paragraphs about the background research (previous experiments) & real world application Rationale needs APA citations: “Plants grow really well with music” (Kowalik, Vohl, Davis, & Powell, 2010). Hypothesis – If…, then… format Procedure – step by step procedure, future tense, anyone could follow! Bibliography – APA format Kowalik, E., Vohl, N., Davis, J., & Powell, J. (2010). Plants don’t react to music. Journal of Bad Botany, 3(20), 12-15.TRANSCRIPT
Warm Up 9/16 What are the two main types of cells?
What is the main difference between them? APA Format and Rough
Draft
Rough Draft of Research Plan is DUE next time. Rationale Paragraphs
about the background research(previous experiments) & real
world application Rationale needs APA citations:Plants grow really
wellwith music (Kowalik, Vohl, Davis, & Powell, 2010).
Hypothesis If, then format Procedure step by step procedure, future
tense,anyone could follow! Bibliography APA format Kowalik, E.,
Vohl, N., Davis, J., & Powell, J. (2010).Plants dont react to
music. Journal of Bad Botany,3(20), Organelle Review Complete the
diagram titled organelle on the notesthat you picked up on your way
into class. Label as many organelles as you can by yourself.
Compare your diagram with your shoulder partner. Lets name them.
Organelle Review Rough ER Smooth ER Cell Membrane Ribosome
Chloroplast
Nucleus Golgi Body Mitochondria Cell Differentiation Cells
structure relates to its function.
Nerve cells are long and thin to carry messagesthroughout the body.
Bone cells calcify to become hard. Muscle cells have striations to
contract. Blood cells are round like inner tubes. All your cells
have the same DNA!How do theybecome different shapes and sizes?
Cell differentiation happens through generegulation. Genes are
turned on or off through chemical signals. The Cell Membrane Do
Your Cells Eat and Drink?
Cells must take in waterand nutrients in order tofunction. Mmm..
The cell must take in sugars, hormones, amino acids, etc.In takes
in all things necessary for cellular function.Get input from
students on cell shape. Discuss the fact that cells are 3D. What
part of the cell allows it to take in nutrients and water?
First ask the students if they know the answer.Click to bring in
the picture of the cell membrane Cell Membrane vs Cell Wall
Flexible Found in all cells Regulates entry into thecell Made up
oflipids andproteins Cell wall Not flexible Not found in all cells
Provides structure andsupport Made up ofCarbohydrate andprotein
fibers Of What is the Cell Membrane Made?
Proteins and Lipids and Carbohydrates Do not discuss individual
proteins here.Discuss the structure of the phospholipids (head and
tail).It is a fluid membrane.The proteins float through the lipids
and it is not solid.It can be described as a Wall of Crisco. The
Cell Membrane is a Mosaic.
Mosaic means: composed of a combinationof diverse elements How does
this relate to a cell membrane? Definition from Selectively
Permeable
Cell membrane will allow some substances to passthrough it. What
are some objects that are permeable that youcan think of? Which
color dots is the blue line going to be permeable to? What are the
Proteins in the Cell Membrane?
Marker Channel Receptor The students do not need to be tested over
this information!Click to bring in each name.Do one at a time so
you can discuss.Receptors receive chemical information
(hormones)and act like a radio antenna to send information inside
the cell. Most hormones do not actually go into the cell.Channel
protein bring polar compounds (ex: glucose) into the cell.The
compound actually has to fit the shape of the channel.Marker
proteins identify the cell.They are the name tags.They identify the
cell as self, so that your body identifies your cells. The Proteins
of the Cell Membrane
Receptor Proteins: receive chemical information(hormones)and act
like a radio antenna to sendinformation inside the cell. Channel
Proteins: bring polar or large compounds(ex: glucose) into the
cell. The compound actuallyhas to fit the shape of the channel.
Marker Proteins: identify the cell.They are thename tags. Functions
of the Cell Membrane
Regulates what goes inand out of the cellGatekeeper Maintains
homeostasis Helps with flexibility Diffusion Is a type of passive
transport.
Movement of molecules from a higherconcentration to lower
concentration until there isequal distribution Examples: Perfume,
Air freshener, food coloring in water Equilibrium When a system has
the same concentration throughout
The purpose of diffusion is to reach equilibrium!! How would
diffusion happen in a cell?
Tell the kids to watch the molecules moving across the membrane.Ask
why they are moving. to reach equilibrium.Notice that some
molecules are disappearing (they are being used.) 18 How would
diffusion happen in a cell? How would diffusion happen in a cell?
How would diffusion happen in a cell? How would diffusion happen in
a cell? How would diffusion happen in a cell? How would diffusion
happen in a cell? How would diffusion happen in a cell? Osmosis
Diffusion of water through a semi-permeable membrane
Osmosis Diffusion of water through a semi-permeablemembrane Blue
dots= water Green= salt Osmosis is a type of diffusion
Ask what the Mickey Mouse molecules represent. - water(They should
know this from previous powerpoints).Have the students explain to
what is happening.Include movement from high to low. Cell Membrane
27 Osmosis is a type of diffusion
Cell Membrane Osmosis is a type of diffusion
Cell Membrane Osmosis is a type of diffusion
Cell Membrane Osmosis is a type of diffusion
Cell Membrane Osmosis is a type of diffusion
Cell Membrane Osmosis is a type of diffusion
Cell Membrane Osmosis is a type of diffusion
Cell Membrane Explain what is happening
This shows the movement of all different substances, which is
reality.They do not take turns.Get the students to explain what is
happening. 35 Explain what is happening Explain what is happening
Explain what is happening Explain what is happening Explain what is
happening Explain what is happening Explain what is happening What
about the egg lab? What does the egg represent?
What do you think is going to happen to your eggwhen you look at it
next class period? Hypertonic Solutions The solution outside the
cell has a higherconcentration of solute Cell loses water and
shrinks Hypotonic Solution The solution outside of the cell has a
lowerconcentration of solute Cell gains water and enlarges Isotonic
Solution Concentration of solute is the same inside andoutside of
the cell Cell stays the same What would happen to the animal cells
in each beaker?
100% Distilled Water 80% H2O 70% Water 30% Dissolved Substances 80%
H2O 80% Water 20% Dissolved Substances 80% H2O Ask the students to
predict what would happen to the cells in the beaker.You may want
to explain solutions first.Dissolved substances would be sugars,
salts, ions, etc. 47 Which way did the water move?
100% Distilled Water 80% H2O Have the students predict and then
show the answer.You have to click to get the beaker and the
question to show. Why did the cell get so big? 48 Which way did the
water move?
80% Water 20% Dissolved Substances 80% H2O Predict and show answer.
Why did the cell stay the same size? 49 Which way did the water
move?
70% Water 30% Dissolved Substances 80% H2O Predict and show answer.
Why did the cell get so small? 50 Which type of solution has this
cell been placed in? Which type of solution has this type of cell
been placed in? Which type of solution has this cell been placed
in? Lets Practice Were done with the notes
So glue them into your spiral and record in yourtable of contents!
Clean Up Time #1 Put team folders away
#2 Put all supplies back in team tub #3 Pick up trash on and around
table #4 Put any additional supplies (books, etc) backwhere they go
and cheer and encourage yourteammates.