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Transcript
Name _________________________________ Date _________________________ Per. ______ The Virtual Cell Worksheet 1. Centrioles are found only in __________________ cells. They function in cell _____________________. Notice they have _____ groups of _____ arrangement of the protein fibers. Draw a picture of a centriole in the box. Centriole 2. Lysosomes are called ______________________ sacks. They are produced by the ________________ body. They consist of a single membrane surrounding powerful _______________ enzymes. Now cut the lysosome and click to the next page… Lysosomes Those lumpy brown structures are digestive _____________. They dissolve __________________ and other foreign bodies. Under some conditions the lysosomes in a cell will ______________ and a cell will self destruct in a process called _____________ (giving rise to the name "suicide sacks"). Now click on dissolve and click to the next page. The enzymes help protect you by destroying the __________ that your ________ blood cells engulf. Lysosomes act as a ______________________ for the cell. Go back to the first slide of lysosomes and click the Zoom in and draw what you see. 3. Chloroplasts are the site of ______________________. It consists of a __________ membrane. Now cut the chloroplast, zoom in and click to the next page…. Chloroplasts The stacks of disk like structures are called the ______________. The membranes connecting them are the _________________ membranes. Draw a picture and then click dissolve and move to last page. The membranes that you see here are the site of _____________________. It is here that the energy harnessing process of photosynthesis occurs. 4. Mitochondrion is the _______________________ of the cell. It is the site of _______________________. It has a ____________________ membrane. Cut the outer membrane and move to next page. The white folded structure is the _________________________. The inner membrane is where most _______________ respiration occurs. Cut the inner membrane and move to the next page. The inner membrane is __________ with a very large surface area. These ruffles are called ___________. Mitochondria have their own ________ and manufacture some of their own _______________. Draw a picture of the mitochondrion with its membrane cut. Mitochondrion 5. RoughEndoplasmic Reticulum (ER) are a series of __________ membranes that ________ back and forth between the cell membrane and the _______________. These membranes fill the ____________________ but you cannot see them because they are very ___________________. Cut the membrane, zoom in and draw a picture of the rough ER. Once completed move to next page. Rough Endoplasmic Reticulum (ER) The rough E.R. has __________________________ attached to it. This gives it its texture. These ribosomes manufacture __________________________ for the cell. Select a ribosome and move to next page. The ribosomes are the ______________________________ which manufacture proteins. They are made of ________ parts. These structures are both made of ____________ RNA. 6. Smooth E.R. There are two distinct types of E.R.: The ___________ E.R. has _____________ and is the site of protein synthesis; the _____________ E.R. has no __________________. Cut the ER, zoom in and draw a picture of the smooth ER. Once completed move to next page. Smooth ER It acts as a __________________________ throughout the cytoplasm. It runs from the cell membrane to the nuclear ________________ and throughout the rest of the cell. It also produces ___________________ for the cell. 7. Cell Membrane performs a number of critical functions for the ________. It regulates all that _____________ Cell Membrane and leaves the cell; in multicellular organisms it allows _________ recognition. Click on next page. With the membrane color coded you can see the the various proteins (in purple) that drift around in the ___________ layer of lipids. 8. Nucleus is called the ______________________ of the cell. It is a large __________ spot in eukaryotic cells. It _________________ all cell activity. The nuclear membrane has many ____________________. Cut the nucleus, zoom in and draw a picture of the nucleus. Once completed move to next page. Nucleus The thick ropy strands are the _____________________________. The large solid spot is the _____________________. The nucleolus is a knot of __________________ chromatin. It manufactures __________________________. Dissolve and move to next page. The nucleolus is a spot of condensed _______________. It is responsible for the manufacture of ____________. The chromatin is ____________ in its active form. It is a combination of DNA and ___________ proteins. It stores the information needed for the manufacture of __________________. 9. Golgi Body is responsible for packaging _________________________ for the cell. Once the proteins are produced by the ______________ E.R., they pass into the sac like _______________ that are the main part of the Golgi body. These proteins are then squeezed off into the little _________________ which drift off into the cytoplasm. Click on See how Golgi works… Draw a picture of the Golgi Body as it is squeezing off the proteins. Golgi Body . Spiegle 9/2000