In Anatomy today we finished talking about the way materials get into and out of the cell.  We can therefore finish pages 54-56 in the folders (putting the answers in the Anatomy journal) and will have a quiz on the specializations of the cell membrane and how things get into and out of cells on Monday.  Tuesday, Wednesday, and Thursday will be spent in the lab doing work with the microscopes.  Be sure you bring your red /purple folders and your journals on those days!!

 

 

 In Chemistry in Chapter 2, we did some more work with calculations using our calculators and scientific notation, and in setting up different kinds of problems with factor label (dimensional analysis).  Our homework for the weekend is page 42, 3-6 and page 57. 1-8.  You must do any unit conversions with factor label.  No problems that involve unit conversions may have answers only.  We gave out answers to members of the class for selected problems so they could check their work.  If you have a friend in the class, call him or her to get that information.

 

In Anatomy today, we went over the structure of the cell membrane and specializations of the cell membrane.  We are able to complete the worksheets numbered 54 and 55 in our folders, the answers to which we will put in our Journals.  In the Academic Vocabulary we put in a few words from the Life of the Cell Video. These were leukocyte (white blood cell),extravasation (going out of a blood vessel), chemokines (chemicals which cause changes in the cell), phospholipid bilayer (double layer plasma membrane) , raft, cascade, scaffolding, (look these up), and endothelial cells or endothelium (the cells that line blood vessels).  We will quiz on the various aspects of the structure of the cell membrane tomorrow, and continue with how things get into and go out of the cell.

 

 After checking homework today in Chemistry, we learned how to use our calculator to do computations with scientific notation and then did some practice problems from our worksheet.  We also learned the steps of Factor Label or Dimensional Analysis.  These are:

     1.  Write the given as a fraction

     2.   Find an equality that relates the units of the given to the units of the unknown.

     3.  Write this equality as a fraction, so that the units of that fraction will cancel the units of the given.

     4.  Multiply the given by that fraction, and cancel the units first.  Check to see if the units that are not cancelled are those of the unknown.  If they are not, repeat steps 2-4.  If they are proceed to step 5.

     5.  Multiply all the numerators together.  Press the = button.  Then divide by all the denominators.

     6.  Express your answer in the correct number of significant figures.

 

We then were given 4 examples to do as homework.  

    1.  ___________ m = 6.42 x 10⁵ pm?

    2.  ___________ng = 1.1 g?

    3.  ___________cm³ = 2.4 L?

    4.  ___________MHz = 6.4 x 10¹⁰ Hz?

 

 

 

In Anatomy Class today we took the Chapter 2 test.  If you are home sick, in the Anatomy Journal, you should complete the Chapter 2 Study Helps work from your take home folders.  Then come to me when you get back to school and let me answer any questions you have before you attempt to take the test.  I can also drill you on some of the things that were on the test to help you get ready.  Please try to get makeup tests out of the way ASAP because the next chapter, The Cell has lots and lots of memorization.

 

Tomorrow we will take a new kind of root word test.  We put our Chapter 3 root words, definitions, example words and their definitions into the Academic Vocabulary part of our journal.  Tomorrow's quiz will have the usual, I give the root definition, you write the root and the example term, and in addition, you must give the definition for the example terms.  Download the Chapter 3 notes tonight from the Teacherweb site, and read the part of Chapter 3 that deals with the cell membrane and also the section that deals with how things get into and out of the cell. (We are skipping the cell organelles just now). 

 

 

 

In Chemistry class, we took a test on the chart on page 34 (everything except the section labeled Defined Standard), and also what I call the "how many's".  If you can't get those from someone in the class, please e-mail me and I will send you a copy.  That is a MAJOR test grade, so you really need to get caught up on that.  So far in Chapter 2, we have covered all of Section 1 and completed the Section 1 Review.  Yesterday we did a measurement activity, and learned about significant figures in measurement and also about percent error, and accuracy and precision.  That is covered on pages 44 - 46 in the book.  We also did some density calculations, and for homework last night completed p. 59, 16 - 19. 

 

Today we reviewed accuracy and precision and percent accuracy, and learned how to count the number of significant figures in measurements.  That is covered on pages 46 -48.   Look at Sample Problem Don p. 47.  Then we did Practice problems a and b on p. 48.  We will not use the complicated rounding rules on the bottom of that page, but rather standard ones that you have always used in math class.  After we learned to count significant figures, we then learned how to round off the results of calculations with measurements to a correct number of significant figures.  That was covered on pages49 and 50.  Try working the sample problems 1 -4 on page 50.  We had an assignment from a worksheet, but if you can do these they will substitute.Tomorrow we plan to work with using our calculators to do operations with scientific notation and developing conversion factors to change from one unit of measure to another.  That is covered on pages 51, 52, and on pages 41 and 41.  At the end of the lesson, you should be able to do all of the Secton Review on p. 42, as well as the practice problems on p. 42.  DO NOT use "King Henry" to convert measurements.  We must use conversion factors and dimensional analysis to solve chemistry problems.

 

Let me know if you are having problems.