Mrs. Anna Ward Ridge Road MS Cell Nucleus Mrs. Anna Ward Ridge Road MS

Questions from yesterday’s lab… (p. 77) Cell Membranes are flexible…. Is the bubble flexible? How do you think that this is able to apply to our cells. Cell membranes are self-sealing… What objects were able to pass through the membrane without breaking it? Why do you think that it is important that membranes are able to self seal themselves? Transport Proteins What happened when you placed the string circle into the membrane? Why do you think this happened? Cell Division What happened when you cut the bubble with the knife? Why do you think this is important for our cells?

The Nucleus Notes P. 80 What is the function of nucleus of the cell? Controls most activities in the cell Contains the genetic information (DNA) What is the structure of the nucleus of the cell? Circular structure Contains a smaller nucleolus Contains Chromosomes (DNA structure) Surrounded by a nuclear membrane

What is the nuclear membrane? Also known as nuclear envelope Membrane that surrounds and protects the nucleus Regulates what enters/leaves the nucleus

Prokaryotic vs. Eukaryotic Cells Some cells do not have a nucleus. These are prokaryotic cells. Simplest life forms Include bacteria Genetic material “floats” around in the cell You’ll learn all about these in 8th grade science Cells that have genetic material enclosed in a nucleus are Eukaryotic cells. Include plant and animal cells What we learn about in seventh grade science

Brain Pop http://www.brainpop.com/science/cellularlifeandgenetics/cellstructures/preview.weml

One-Pager Use plain white paper Use colored pencils or makers Title your page “Cell’s nucleus” Use three complete written sentences that convey facts about the cell’s nucleus Fill the entire page Place five essential vocabulary words Put a ½ inch symbolic border around the edge Use three visual images Write 2 Higher level questions about the cell’s nucleus you might want to ask someone on a test if you were teaching the subject