BIOLOGY A (Chatsworth Charter High School & G+STEAM Magnet Center) //www.chatsworthhs.org/apps/classes/73266/assignments/ Class Name: BIOLOGY A Instructor(s): Desiree Torres Location: H52 en-us SchoolSitePro <![CDATA[Due: 01/11/2007]]> //www.chatsworthhs.org/homeworkItem237120 //www.chatsworthhs.org/apps/classes/73266/assignments/ Cell City project due Thursday!!! See me at lunch for help or answers to questions.
]]> Tue, 09 Jan 2007 00:46:09 PST <![CDATA[Due: 12/13/2006]]> //www.chatsworthhs.org/homeworkItem226662 //www.chatsworthhs.org/apps/classes/73266/assignments/ Answer analysis questions using complete sentences.
1. To which organic molecule group does plant pigments belong?
2. What is chromatography?
3. Which pigment was the lightest?  Which pigment was the heaviest?
4. Which pigment is necessary for photosynthesis to occur in plants?
5. Which organelle is cholorphyll found?
6. Some plant leaves contain yellow and red pigments as well as chlorophyll as senn in this lab.  In fall, those leaves may become red or yellow.  What is a possible explanation for those color changes?

]]> Tue, 12 Dec 2006 18:24:50 PST <![CDATA[Due: 11/30/2006]]> //www.chatsworthhs.org/homeworkItem214791 //www.chatsworthhs.org/apps/classes/73266/assignments/ Please complete the following questions for Plasmolyzed Cell Lab.
Remember to use complete sentences or you will be marked down.
Analysis
1. Describe the location of chloroplasts in a normal Elodea cell (tap water).
2. Describe the location of chloroplasts in a plasmolyzed cell (6% salt solution).
 
3.  What other differences did you observe between the normal Elodea cell and the cell in the salt solution?
Conclusion
When tap water was placed on the Elodea leaf, what type of solution would you consider it to be: isotonic, hypertonic, hypotonic?  Why did the chloroplast appear clustered in the center of the cell when salt solution was added?  Which direction did the water molecules diffuse in the when placed in salt solution?  If we placed a drop of 6% starch solution (sugar solution) on the Elodea leaf, what would you predict would happen to the location of the chloroplast? Why?

]]> Wed, 29 Nov 2006 18:00:56 PST <![CDATA[Due: 11/29/2006]]> //www.chatsworthhs.org/homeworkItem212025 //www.chatsworthhs.org/apps/classes/73266/assignments/ Homework: Ch 7 Assessment page 197 #1-10.  Copy question and correct answer choice.  I will collect on Wednesday.
Homework (Tues) 11/29: Ch. 7 Test Prep. page199 #1-11.  Copy question and correct answer choice.  Also due Wed.
Study all this week (NP 19-22 & notes) for Ch 7 test on Friday 12/1. (100 points). 

]]> Mon, 27 Nov 2006 17:42:25 PST <![CDATA[Due: 11/17/2006]]> //www.chatsworthhs.org/homeworkItem204801 //www.chatsworthhs.org/apps/classes/73266/assignments/ Dispatch #5 due Friday
]]> Wed, 15 Nov 2006 21:30:29 PST <![CDATA[Due: 11/16/2006]]> //www.chatsworthhs.org/homeworkItem204798 //www.chatsworthhs.org/apps/classes/73266/assignments/ Cell Project Proposal due 11/16. Please state what type of human body cell you chose and a brief explanation for chosing the cell. It does not need to be typed. If you are working with a partner, turn in one proposal for the both of you. Be sure both names are listed.
]]> Wed, 15 Nov 2006 21:27:09 PST <![CDATA[Due: 11/16/2006]]> //www.chatsworthhs.org/homeworkItem204797 //www.chatsworthhs.org/apps/classes/73266/assignments/ Analysis
1. Describe the shape of the onion, Elodea, and cheek cells observed in the lab. How are they the same? Different?
2. Were you able to recognize the basic cell structures (cell membrane, nucleus, and cytoplasm) for each cell type? Which structures were easy to observe? Easy?
3. What is the purpose of staining the cells?
Conclusion
Restate the purpose of the lab in your own words. Why are cells different shapes and sizes? If you could observe any type of cell, which would it be? Why? What would you expect of the size and shape? Skin cells seem to fit together or overlap. How is this cell arrangement helpful to the organism? If blood cells were box-shaped instead of disc shaped, why would they be difficult to do their job as well?
]]> Wed, 15 Nov 2006 21:24:22 PST <![CDATA[Due: 11/09/2006]]> //www.chatsworthhs.org/homeworkItem196219 //www.chatsworthhs.org/apps/classes/73266/assignments/ ]]> Mon, 06 Nov 2006 15:34:26 PST <![CDATA[Due: 11/07/2006]]> //www.chatsworthhs.org/homeworkItem196203 //www.chatsworthhs.org/apps/classes/73266/assignments/ Finish conclusion for microscope lab.
Answer the following questions using complete sentences.
Restate the purpose of the lab.  Explain two things you learned after performing the experiment.  What other specimen would you like to observe using the microscope?  What would you expect the speciment to look like under the microscope? Why? 

]]> Mon, 06 Nov 2006 15:33:11 PST <![CDATA[Due: 11/03/2006]]> //www.chatsworthhs.org/homeworkItem193051 //www.chatsworthhs.org/apps/classes/73266/assignments/ ]]> Wed, 01 Nov 2006 17:51:48 PST