Topic 1.1 – Introduction to Cells Day 1- Cell theory, Limitations, life functions, and microscopy

Common Features of Cells List the four common features of cells.

NOS: Not all cells conform to the cell theory According to the text (p 3), what is a discrepancy? How is the cell theory an example of where scientists looked for trends and discrepancies? (Don’t forget to include Hooke!)

Testing the cell theory Using your text or other resources, identify what the 3 images are on the this slide. Next, discuss why they do not conform to the cell theory.

Testing the cell theory What are hypha? What is the difference between septate hypha and nonseptate (aseptate) hypha? Sketch the difference below. Explain why the aseptate fungi do not conform to the cell theory.

What are the 7 functions of life? _______________________________

Compare how Paramecium and Chlorella go about their life functions differently Paremecium Nutrition Metabolism Growth Response Excretion Homeostasis Reproduction

Compare how a unicellular vs a multicellular organism goes about these necessary functions Nutrition Metabolism Growth Response Excretion Homeostasis Reproduction

A great little conversion chart that you will probably use more than once!

Of scale bar Of object

http://www.cellsalive.com/howbig.htm

Topic 1.1 Cell Theory Day 2- Size limitations, multicellular orgs, differentiation and stem cells

http://www.youtube.com/watch?v=iXzmfnepG0o

Surface Area to Volume ratio is important in the limitation of cell size Why can’t cells get too big???????? Explain how the surface area to volume ratio (SA:V) would limit how large a cell can get, citing specific examples of how they work around this limit(refer to next slide).

Multicellular organization Interactions of parts. The whole is greater than the sum of its parts. http://www.youtube.com/watch?v=FdMzngWchDk

Day 3: Cell differentiation, Gene expression, Stem Cells Topic 1.1 Intro to Cells Day 3: Cell differentiation, Gene expression, Stem Cells

What is Cell Differentiation?-Use p11 in text to complete What is a good analogy of how cells work in a multicellular organism? Give 3 examples of cells in the human body and the function or job they perform. __________________________ Define Tissue: What is the benefit of a cell becoming specialized?

How do cells become differentiated (specialized) How do cells become differentiated (specialized)? Use p 11 in text to complete the notes Do all cells in an organism have the same set of genes (genome)? _________ Is every gene expressed (turned on, protein made) in every cell in an organism? ____________ Describe the rod cell example in your book that demonstrates cell specialization: What is the relationship between development and gene expression?

Check this out! http://www.youtube.com/watch?v=jp6L5emD8rw

Stem Cells- What you need to know, apply, and think about Stem cells are the cells that arise after zygote formation They have the potential to become any specialized cell that is encoded in the organisms genome Therapeutic use of stem cells to treat Stargardt’s disease and Leukemia NOS- Ethics of stem cell research Sources of stem cells and the ethics of using them

http://www.youtube.com/watch?v=XL72Dn3rJ_E http://www.medgadget.com/2007/12/scientists_cure_sickle_cell_anemia_in_mouse_model.html

What is so special about stem cells? Use p12-13 in text to answer The two key properties that have made research of stem cells so active are (summarize in your own words): _________________________________________________________________________________________________________________________________________________________

List the potential uses of Embryonic Stem cells (p13)

List the potential non-therapeutic uses of stem cells (p13)

Describe the difference and importance of early stage stem cells compared to those that are further along in development Do stem cells exist in adult organisms? Where would we find them?