Biology 12

Today we started our next unit on cells and cell organelles.   We started the big power point notes.   Module questions Section B:  Cell Structures up to iii) the nucleolus is due tomorrow.

ANSWERS TO BIOMOLECULES REVIEW:
1. A     2. C    3. D   4. D    5. B    6. D    7. C    8. D  9.OMIT  10. D   11. C   12. A   13. C
14. D    15. B    16. A    17. C    18. B    19. D    20. C    21. B    22. C    23. D    24. D    25. A    26. C    27. A    28. B    29. B    30. C    31. C    32. C    33. C    34. A    35. A    36. B    37. D    38. A
39. D    40. D      

SHORT ANSWER:
1.  Draw any two monomers (like two amino acids) link them together by getting rid of an OH from one molecule and an H from the other (dehydration synthesis forms a polymer).  Water is produced in dehydration synthesis.  Hydrolysis splits polymer back into monomers.

2.  Carbohydrates:  sucrose, glycogen, monosaccharide, starch
Lipids:  Steroid, fatty acids, saturated
Proteins: Enzyme, peptide, amino acid, tertiary structure

3.  Denaturing can change the shape of a protein by distruption of the hydrogen bonds that hold the structure together.  Heatings or changing the pH can denature proteins.

4.  Draw ring structure of glucose.  Draw rough sketch of starch (plant energy storage), glycogen (animal energy storage) and cellulose (plant cell walls) as polymers of glucose.  

Biology 11

Today we took notes on Types of Natural Selection:  Stabilizing, Directional and Distruptive.   We also learned the terms Convergent and Divergent Evolution.   We have two worksheets comparing marsupials and placental mammals.   How are these animals examples of convergent evolution?  

Biology 11

Today we had a quick question quiz on Evidence for Evolution.  Next I gave back the Evidence for Evolution Worksheet and we talked about a couple of questions.  Finally we played a natural selection game to see which predator traits were selected in different environments. 

Biology 12

Today we completed all our notes on Biomolecules.  Practice Biomolecules questions and all module questions up to and including nucleic acids due Monday.   I also collected the Buffer Lab and the Biomolecules in Food Lab. 

Science 10

Today we wrote a quick question quiz on DNA and RNA.  Next we took some notes on gene and chromosome mutations.   Finally we continued work on human karyotypes. 

Biology 12

Today we spent most of the double block doing the Biomolecules in my Food lab.  This lab is due tomorrow along with the Buffer lab from last week. 

Science 10

Today we did took some notes on genes, chromosomes and DNA.   Next we extracted DNA from a strawberry and kiwi fruit.  Yum!  Delicious looking......Finally we learned about human Karyotypes and cut out, paired up and placed in order the 46 chromosomes of a human Karyotype.