3.1 Chemical elements & water

Taylor's "Water;"

water polarity;

water properties;

1. Check assignment

2. Informal quiz over 3.1

3. Overview carbohydrates et al

a) On one large index card, students draw:

• protein monomer - amino acid (methionine)
• nucleic acid monomer - nucleotide.pdf (choose one)
• carbohydrate monomer - glucose.pdf (select the ring structure)
• lipid - draw one fatty acid.pdf & one glycerol

b) Students make study notes from assessment statements 3.2 (this means "copy statements and make exemplar answers")

Taylor's Carbohydrates;

Clegg 37-52;

SG 13-16;

From Burrell, "Start them on solids"

Provide students with "5 white powders" and recommend tests to perform: 

1. conductivity
2. solubility
3. melting temperature (in flame)
4. Iodine test
5. Biuret's test
6. Benedict's test

Students record relevant observations in their lab book.

Analyze the results to determine the identity of each powder:  NaCl, NaHCO₃, C₁₂H₂₄O₁₂ (sucrose), napthalene, cornstarch

From Burrell:  http://bit.ly/aYAvzW;

lab book

Pre-assignment

• Practice drawing: DNA, glucose, glycerol, water, ribose, fatty acid, amino acid,

Lesson

• submit previous practical report on "boiling" to Turnitin.com
• assign 3.2 worksheet; due Wed.
• provide written identify of each powder (choosing from list).  This is to be a deductive assignment; not multiple choice.

Taylor's Carbohydrates;

Clegg 37-52;

SG 13-16;

1. Lecture protein structure from assessment statements.

2. Next class we will begin class with brief FORMATIVE quiz on proteins.

a) Make sure you have 7.5 assessment statements completed.

b) Complete 3.3 and 7.1 (both on "DNA structure") before next class.  Do this on the the assessment statement papers we "built" in class today

Protein images;

Collagen, elastin;

Globular proteins;

3.3 DNA

Goals: (1) Survey DNA assess/st. and organize them for understanding; (2) Study protein structure [this is foundation & context for why DNA is important]

1. Intro-Ask (S) to draw typical amino acid, fatty acid and monosaccharide.

2.  Ask students to describe how monomers are added to from polymers and how polymersa are digested to from monomers.

3. demonstrate effect of  H₂SO₄ added to sucrose, glucose and fructose.

4. Study DNA structure with students (they take notes on the A/S they organized in last period.

a) complete assessment statements:

3.3 & 7.1 & 7.5 (HL)

3.3 (SL)

1. Students "Draw a diagram of a portion of the molecular structure of DNA" ... then collaborate on board to add maximum detail.

2. Summarize what HL/SL need to know about DNA based on diagram.

3. Introduce nucleosome structure and

nucleosome organization (see Wikipedia) to students

• look at nucleosome/DNA image on Wikipedia (see above)
• identify functions of this protein  

4. Highly DNA repetitive sequences...

a) make parallel flowchart for DNA replication and DNA transcription (ie. as two columns on a page) Pay special attention to similarities and differences; this may be challenging!

b) formative quiz next class on this assignment & DNA structure.

Nucleosome;

Explore stretch of code (NOVA);