The AP Exam

Click here to link to the college board homepage for the AP biology exam.

The average grade for your first test was a 70%.

Lab 1: Part B Osmosis and Diffusion

Students completed their first AP Biology lab today. For pictures check out the NHS portal.

This lab was designed to increase student's understanding of osmosis and diffusion as well as the following lab skills:
* using a balance
* pour solutions
* working with dialysis tubing
* graphing
* drawing inferences.

Homework: complete the lab analysis questions on pages 6 and 7 as well as question #5 on page 8. This is due on Monday in class. I am on duty this weekend if you need help :)

Osmosis and Diffusion

Today D block saw the basics of osmosis and diffusion in action as they helped with a demonstration of lab 1A.

This cool guy is adding 4mL of IKI to 170mL of distilled water. On the table are glucose test strips which are used to measure the amount of glucose present in solution.

What did we learn today:
1. Molecules move from areas of high concentration to low concentration (down a concentration gradient).
2. Dialysis tubing functions as a semipermeable membrane through which water, glucose and IKI are able to pass through.
3. Starch is a macromolecule, and therefore too large to pass through the membrane, so it stays in the bag.

Homework for both classes:
1. Complete the analysis questions for lab 1A.
2. Read the background and procedure for lab 1B
3. Bring your lab manual to class on Friday.

Lab 1 Activity A

D Block is taking their test today and B Block is starting A.P. Lab 1.

D Block: please bring your lab manual to class tomorrow and the completed essay portion of your test.

B Block: Lab 1A objective: investigate the processes of osmosis and diffusion in a model membrane system.

Since last year we spent a substantial amount of time on osmosis/diffusion you will be responsible for reviewing the majority of this material independently.

Test 1: Biochemistry Review Sheet

1.

1. 1. essential elements

2. 2. atomic mass

3. 3. atomic number

4. 4. subatomic particle (P,N, electron)

5. 5. isotopes

6. 6. valence electrons

7. 7. covalent bond

8. 8. non-covalent bond

9. 9. ionic bond

10. 10. polar substance

11. 11. nonpolar substance

12. 12. electronegativity

1. properties of water
2. surface tension
3. high specific heat
4. evaporative cooling
5. density of water
6. adhesion/cohesion

13. 13. hydrophobic

14. 14. hydrophilic

15. 15. mole

16. 16.molarity

17. 17. molecule

18. 18.pH

19. 19. H⁺ (hydrogen ion)

20. 20. OH^- (hydroxide ion)

21. 21. isomer

22. 22. enantiomer

23. 23. structural isomer

24. 24. geometric isomer

25. 25. amino acid (structure and function)

26. 26. amine functional group

27. 27. phosphate group

28. 28. macromolecule

29. 29. poly/di/mono – saccharide

30. 30. carbohydrate

31. 31. lipid

32. 23. phospholipids

33. 33. protein

34. 34. nucleic acid

35. 35. polymer

36. 36. monomer

37. 37. dehydration reaction

38. 38. hydrolysis

39. 39. ratio of C:H:O in sugars

40. 40. structural polysaccharide

41. 41. storage polysaccharide

42. 42. triacyclglycerol

43. 43. saturated fat

44. 44. usaturated fat

45. alpha helix

46. beta pleated sheet

47. basic structure of RNA

48. structure of DNA

49. nitrogenous base

50. phosphate group

51. nucleotide

52. pyrimidine

53. purine

54. complimentary strand (5’– 3’ DNA


Format of the test: There are 50 multiple choice questions and 1 essay. The multiple choice questions are each worth 2 points. The essay is worth 25 points and will be considered a separate test which will you complete AT HOME using the honor system. There will be three essays and you will complete 1 of them. You will only have 30 minutes from the time you open the questions until the time you must stop.

Why is the essay being tested this way?

1. You will likely have tests like this in college.
2. We don’t have enough class periods.

HEADS UP FOR THE ESSAY: All answers must be in essay form. Outline form is not acceptable. Labeled diagrams may be used to supplement your essay but are not sufficient on their own. Read the question thoroughly before you begin to write. You may hand write or type the essay.

Student Presentations

Starting last Friday and wrapping up today, students will give a mini-lesson on one of the sections in Chapter 5.

Tonight there will be an extra help session from 7:30-8:30 pm in Meservey 205 to prepare for the test tomorrow (B block) and Wednesday (D block).

How to get the most out of an extra help session:
1. Come prepared with specific questions to be answered.
2. Bring your notes
3. Bring your textbook

B Block: if you would like extra time on the test, you may start at 7:30am

Help for your presentations

Looking for information for you lessons? Click on the name of your topic for help. Also, check out google video for some good ideas.

Lipids

Macromolecules Overview

Protein


Carbohydrates

Nucleic Acids

Chapter 4 notes and Chapter 5 presentations

D Block is catching up to B block... D block took notes on section 4.2 and built models of various functional groups in section 4.3

Tomorrow D block has an open notes quiz on section 4.3 and will begin working on their lesson plans for chapter 5.

B Block had time to work on their lesson and will begin presenting on Friday.

B Block: Chapter 5 The Structure and Function of Macromolecules

After taking a 10 minute open notes quiz on Chapter 4, students divided up the sections in chapter 5, to create a 10-15 minute lesson which they will teach to their peers on either Friday 9/21 or Monday 9/24.

5.1: Ben & Nate
5.2: Pat & Tak
5.3: Terrance & Jae Ro
5.4: Ms. Saxe
5.5: Rachel & Mike

Class time on Wednesday will be used to meet with Ms. Saxe and go over your lessons. You have been emailed the rubric for how you will be graded.

You will have a test on Chapters 2, 3, 4 and 5 on Tuesday 9/25. If you think you want extra time, you may come in at 7:30am and start the test.

Chapter 4: Carbon, Isomers & Functional Groups

D Block: Quiz on Chapter 3. Homework: Read sections 4.1 and 4.2

B Long Block:
Objective: Be able to identify and differentiate between various types of isomers and functional groups.



After a lecture on section 4.2, students used Ball & Stick Models to build 8 functional groups and complete a worksheet.

Homework: Complete worksheet.

Chapter 3 Quiz

B Block had a quiz on Chapter 3 today.

Homework: Read sections 4.1 and 4.2.

Water is essential to life (cont.)

We continued our notes on why water is really pretty amazing. We focused on the following key ideas:





1. Insulation of Water by Floating Ice
2. Water is the Solvent of Life
3. Hydrophilic and Hydrophobic Substances
4. Solute Concentration in Aqueous Solutions
5. Dissociation of water molecules leading to changes in pH
6. The pH scale and how to determine a pH by looking at the concentration of hydroxide ions.


Homework: B Block has a quiz on Chapter 3 on Saturday, D Block has a quiz on Monday.

Extra Help: I am on duty tonight in Moore if you would like to review anything.
Links for Extra Help:
Chapter 3 Flashcards Online:
Scroll down to the bottom of the page and click the "study" box. Follow the instructions on the left side of the screen.
The Biology Project Interactive Quiz:
Click on a question (underlined in blue). If you answer incorrectly, you will get an explanation as to why you are wrong.

Properties of Water

D Block:
Students had a quiz on Chapter 2. After completing the quiz we finished section 3.2 on the properties of water.

Homework: Complete the properties of water homework.

Confused on the what adhesion and cohesion are? Watch the video below.

Basic Chemistry Review

Today we reviewed Chapter 2, which is on basic chemistry.

Homework: B Block complete the "self quiz" at the end of chapter 2 in preparation for a chapter 2 quiz tomorrow (Wednesday). In addition write at least 2 paragraphs to answer the questions in the "Scientific Inquiry" box on page 46 (of the 7th ed.).

It's finally here!

So it's the first day of school...while your parents may not have had you pose akwardly in your new "first of school" outfit, you did manage to stumble to school meeting on time and eventually to class. Now it's time to get down to business.

Homework on the first night!?!? You bet.

Skim ALL of Chapter 2 and take brief notes.
What does it mean to "skim" something?

1. Read all the section headings, what are the main ideas of the chapter?

2.Read the subheadings (Words in blue--"Elements and Compounds.")

3. Look at the figures, diagrams and pictures. READ the descriptions of the figures.