LS 2 - All About Cells


LS 2 is the big SOL for Cells - with this SOL, you will learn about the scientists who were vital in the discovery of cells as well as the necessary tool in order to view cells - the microscope. Usually in class, we will learn how to use a microscope in lab and look at different types of cells - lucky classes who behave and finish early will get a chance to view their own cheek cells using blue dye! After learning about the cell theory, we take a look at the inside of cells - the organelles that perform the jobs that allow our bodies to function. There are also some very important differences between plant and animal cells that the SOL test ALWAYS asks about! So make sure you focus on that!


(LS 2c) Make sure you get your background information on the scientists like Robert Hooke and Rudolf Virchow and learn about the different types of microscopes. Also, make sure you focus on the Cell Theory! If you want to complete these activities, make sure you have your textbook with you!





(LS 2c) When you're learning about the history of cells, why skip a look at one of the most important tools invented in life science? Make sure you know the parts of the microscope and what each part does as well - what good does it do in a lab when you can't name what you're using? Use the picture and information in the Word document below to identify the different parts of the microscope.
microscope_.jpg




(LS 2a) After getting an introduction to the history of cells, take a look at an awesome interactive website that has time and time again been a great place to learn about the organelles of cells. While it is geared towards a high school biology class, you can still learn a lot of information about the organelles found on the inside of cells. Use this worksheet as a guide to the important points of the interactive website called CellsAlive!




(LS a,b) After getting an introduction to what the inside of a cell looks like, identify what each organelle looks like as well what it does for the cell - the function. You can use either CellsAlive, the internet or your textbook to find this information. In class, we use a reading to identify the function of each organelle but you can use the textbook as well! Make sure you draw what each organelle looks like as well because while it's good to know what each organelle does, knowing how to identify it in a picture is just as important! In using this chart, also make sure that you are able to color code each essential organelle. I've provided the blank version as well as the color coded key as well - use the following colors to identify each organelle.

Colors to Use:
Pink - Cell Wall
Orange - Cell Membrane
Brown - Nucleus
Black - Chromosomes
Purple - Endoplasmic Reticulum
Green - Chloroplast
Red - Mitochondria
Blue - Vacuole
Yellow - Cytoplasm


cells_color.JPGcells_no_color.JPG


(LS a,b,c) After all your research, what best way to see what you know. Following are a few practice quizzes that I have used in the past that are good practice for what you know (or don't know) about cells!





Cells don't last forever! They eventually need to be replaced by new cells and the processes that provide those new cells are mitosis and meiosis, the division of cells. Take a look at the following activities to learn more about this awesome process that allows us to replace the cells in our bodies!



(LS 2d) Get the big picture about the different parts of the cell cycle as well as an introduction to mitosis using the textbook - focus more on the parts of the cell cycle than the steps of mitosis - that will be filled in later!



(LS 2d) Now, let's get to the details about mitosis - what's going on in each stage, what those different parts are called and what the heck is cytokinesis? Use the following power point to draw each stage and then add the notes next to that picture. That way, you'll start correlating the steps with what they look like and what is happening!



(LS 2d) It's hard to get mitosis down overnight so use the following worksheets and websites to review mitosis and the steps! There is another CellsAlive activity as well as a warm-up activity that shows onion cells in the different stages of mitosis where you have to identify each stage and then justify your answer (ex. I know this is metaphase because the chromosomes are lined up in the middle of the cell). Try it out! There's also a crossword puzzle to help practice using the vocabulary - see how much your remember!






(LS 2d) Now that you have mitosis down (or hopefully you do), find the differences between mitosis and meiosis. The chart at the end of the power point is for you to fill out - there are at least 3 differences - see how many you can find!


If you are still unclear about the difference between mitosis and meiosis, CellsAlive also shows the division of sex cells through the process of meiosis, so if you are a visual learner, Cells Alive might be a place that you want to go check out!


Great Job! You should know quite a bit about cells by the time you've reached the end of this page!