Graphic
Study Resources
Study Resource 1
|
This song introduces the cell organelles and explains their function.
|
This website has a video and it explains hypotonic, hypertonic, and isotonic substances moving across a cell membrane.
|
This website has a quiz about the cell theory and can help you review.
|
Unit Summary
In this chapter we learned about the the different type of cells, the cell membrane , and diffusion of substances across the cell membrane. The different types of cells are prokaryotic and eukaryotic. Prokaryotic do not have a membrane or any membrane bound organelles. Bacteria and algae are examples of prokaryotic cells. Eukaryotic cells have a nucleus and other membrane bound organelles. Animal and plant cells are examples of eukaryotic cells. Next we learned about the cell membrane. The cell membrane is composed of phospholipids, proteins carbohydrates, and cholesterol. It regulates what comes in and out of a cell. The cell membrane holds all the organelles in the cell. The purpose of the proteins are for enzyme activity, cell to cell recognition, cell signaling, and transport. Lastly we learned about the different types of diffusion. The first two are called passive and facilitated diffusion and both require energy. Passive diffusion occurs with solute molecules move from a high concentrations of dissolved solute molecules to a low concentration. Facilitated diffusion occurs when protein has to help the solute move across the cell membrane so it moves from high to low. The next two are called active transport and exocytosis/ endocytosis and they both require energy. Active transport occurs when solute move from a high to low concentration. Exocytosis/endocytosis transports big or many molecules at once, exocytosis comes out of the cell, endocytosis goes into the cell.
I really liked learning about the organelles of a cell. It amazed me how small they are and how it still has different parts that all function together. I would like to learn more about using a microscope ad looking at things up close. Seeing the cells was so cool and and getting to look at the different type of cells was interesting but I wish we were able to look at it with a different zoom.