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(2 hour class period): 1) Reading quiz over multicellularity notes 2
(2 hour class period): 1) Reading quiz over multicellularity notes 2

... Different tissues respond in different ways to estrogen, and some tissues do not respond at all. Why do you think that might be? (That is, what characteristics might control a cell’s response to estrogen?) Presence or absence of the estrogen receptor. The receptor itself could be an autonomous signa ...
Mitosis - Louis Pasteur MS 67 Science Department Resources
Mitosis - Louis Pasteur MS 67 Science Department Resources

... "We also find the modification discovered in the yeast in humans. It thus seems quite likely that this new signaling path also links the performance of the cellular power plants and cell division in human cells," says Meisinger, who now plans to analyze these mechanisms in tumor tissues. The perform ...
The Cell
The Cell

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Passive vs Active Transport
Passive vs Active Transport

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the essence of life
the essence of life

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Clicker review w/answers
Clicker review w/answers

... D no set number 12 Which function below makes meiosis more complicated than mitosis? A decreasing the chromosome number to haploid B introducing genetic variation among the daughter cells C ensuring that each daughter cell gets a single, complete set of chromosomes D undergoing two rounds of cytokin ...
BIOS 205 Test 3 April 9, 2012 Form A
BIOS 205 Test 3 April 9, 2012 Form A

... 34. Which of these is an example of convergent evolution: a) the bones in a bat’s wing are similar to the bones in the human hand b) snakes have no legs despite having ancestors with legs c) photosynthesis is found in plants and in many protists d) oomycetes (which are protists) and fungi have a si ...
File - Ms. Poole`s Biology
File - Ms. Poole`s Biology

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Organelles and Transport
Organelles and Transport

... 11. In diffusion, molecules [ spread out / condense ] 12. The lipid bilayer describes [ a type of transport / the cell membrane ]. 13. Facilitated diffusion moves substances down their concentration gradient [ with / without ] using the cell's energy. Directions: Below are animal cell placed in bea ...
2nd lecture Cell Biology Classification of cells: Prokaryotic cells
2nd lecture Cell Biology Classification of cells: Prokaryotic cells

... 4) Any living organism may contain only one type of cell either: a) Prokaryotic cells (pro means "before"; karyote means "nucleus). b) Eukaryotic cells (Eu means "true"; karyote means "nucleus). 5) The terms prokaryotic and eukaryotic were suggested by Hans Ris in the 1960’s. This classification is ...
The Cell - Walton High
The Cell - Walton High

...  The portion of the cytoplasm that lies outside organelles and includes other insoluble cellular components is called cytosol.  The cytoplasm contains dissolved nutrients and salts, helps dissolve waste products, and is an excellent conductor of electricity.  It facilitates the movement of materi ...
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Cell Biology Essential Questions

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PPT Version
PPT Version

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1.1 Check and Reflect Answers

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Organelles - morescience
Organelles - morescience

... the oxygen delivery. In fact, humans have some of the smallest red blood cells of all vertebrates, thanks in part to the destruction of the nucleus. Most mammals have red blood cells without nuclei, while all other types of vertebrates do have nuclei in their RBC’s. However, all red blood cells, inc ...
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Cell notes File

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Cell Theory and Structure
Cell Theory and Structure

... Modern prokaryotes:  are bacteria.  have a cell wall made of polysaccharides  gives the cell support and shape. ...
Without looking at the word bank on the next page, complete the
Without looking at the word bank on the next page, complete the

... Cell Membrane ...
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Cell Structure

... - often several ribosomes collectively (polysome) ...
Plant Cytology - Home Page for Ross Koning
Plant Cytology - Home Page for Ross Koning

... observe its blade cells in distilled water. A saturated solution of NaCl is available for a second mount or to add to the first one. The distilled water will obviously be hypotonic, the salt solution will be hypertonic. Compare the results. Are sodium, chloride, or water permeant to this membrane? I ...
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Gene Section CD97 (CD97 molecule) Atlas of Genetics and Cytogenetics

... CD97 has the ability to bind cellular and extracellular matrix ligands. The first two EGF domains of CD97 bind CD55 (decay accelerating factor). The fourth EGF domain of CD97 and thus only the longest CD97 isoform interacts with the glycosaminoglycan chondroitin sulfate B. CD97 binds to alpha5beta1 ...
ASSIGNMENT: Create a drawing or map that makes an analogy with
ASSIGNMENT: Create a drawing or map that makes an analogy with

... ...
Cell Model lesson
Cell Model lesson

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Amitosis

Amitosis (a- + mitosis) is absence of mitosis, the usual form of cell division in the cells of eukaryotes. There are several senses in which eukaryotic cells can be amitotic. One refers to capability for non-mitotic division and the other refers to lack of capability for division. In one sense of the word, which is now mostly obsolete, amitosis is cell division in eukaryotic cells that happens without the usual features of mitosis as seen on microscopy, namely, without nuclear envelope breakdown and without formation of mitotic spindle and condensed chromosomes as far as microscopy can detect. However, most examples of cell division formerly thought to belong to this supposedly ""non-mitotic"" class, such as the division of unicellular eukaryotes, are today recognized as belonging to a class of mitosis called closed mitosis. A spectrum of mitotic activity can be categorized as open, semi-closed, and closed mitosis, depending on the fate of the nuclear envelope. An exception is the division of ciliate macronucleus, which is not mitotic, and the reference to this process as amitosis may be the only legitimate use of the ""non-mitotic division"" sense of the term today. In animals and plants which normally have open mitosis, the microscopic picture described in the 19th century as amitosis most likely corresponded to apoptosis, a process of programmed cell death associated with fragmentation of the nucleus and cytoplasm. Relatedly, even in the late 19th century cytologists mentioned that in larger life forms, amitosis is a ""forerunner of degeneration"".Another sense of amitotic refers to cells of certain tissues that are usually no longer capable of mitosis once the organism has matured into adulthood. In humans this is true of various muscle and nerve tissue types; if the existing ones are damaged, they cannot be replaced with new ones of equal capability. For example, cardiac muscle destroyed by heart attack and nerves destroyed by piercing trauma usually cannot regenerate. In contrast, skin cells are capable of mitosis throughout adulthood; old skin cells that die and slough off are replaced with new ones. Human liver tissue also has a sort of dormant regenerative ability; it is usually not needed or expressed but can be elicited if needed.
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