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?