Chapter 3 Multiple Choice Test.

You will take the test in class. Relax an pay attention to the details.

If there enough time remaining after the test, we will discuss the Nutrient Testing Lab assignment from yesterday.

Nutrient Testing Lab

You will work in groups of four to test food items for different nutrients. 
You will test for the following nutrients in the food items provided:
1) Fats and oil
2) Starch
3) Glucose
4) Sucrose
5) Proteins.

The following indicators will be used to confirm the presence of each nutients:
a) brown paper
b) Iodine
c) Benedict's Solution
d) Biuret's Solution

Each group of four students will have a different combination of foods to work with.

Lab Reports will be collected from each student at the end of the class.

Have fun.

Chapter 3 Packet is Due

After grading the packet, you will be given instructions about the nutrient testing lab on Thursday, September 27, 2018.

The Role of Proteins in a Cell

You do not need to do the essay questions in the packet

You will start the assignment in class to research the role of Proteins in a Cell.
You will create a chart to list the 7 Functions of proteins.
In the assignment you will include: Functions, Description, Examples.

Chapter 3 test is on Friday, September 28, 2018.  Clink on the PLHS link to view study Guide

Nucleic Acid.

You will be introduced to nucleic acids. The details of nucleic acids will be covered later in the school year under the units on genetics.

The monomers of nucleic acids are nucleotides.  Each nucleotide is made of a phosphate group, linked to a 5-carbon sugar. Each nucleic acid chain has a backbone in which phosphate groups alternate with sugar molecules to form a covalently linked polymer. Attached to the sugar ring of each nucleotide by loss of a molecule is one of four nitrogenous bases: A, T, C and G.

If the proteins are the building materials of life, then nucleic acids are the blueprint.  The DNA has the instructions and directs the RNA in functioning of cells and the synthesis of proteins
 

Proteins

You will take notes from the PowerPoint on the role of Proteins



It is only in the nature of the variant (R) that amino acids differ from one another.  There are only about twenty amino acids that occur in the proteins of living organisms, although there are more than 2000 natural and artificially made amino acids.

There are ten essential amino acids that cannot be synthesized by the body and must be included in the diet.

 Click the link immediately below to  view video.
Video: Protein Structure and Folding

PowerPoint Presentation - Lipids

You will take notes on lipids.  We will discuss the differences between unsaturated and saturated fats.  We will also discuss trans fats; how it is produced and the health consequences of having a diet high in saturated fats. 

We will also discuss steroids and discuss steroids and the modern athlete.

PowerPoint Presentation of Chapter 3

 You will take notes from the PowerPoint and details about each of the macromolecules will be discussed.
Remember you will find the packet easy if you work on the sections each day after the lecture.  Also memorize the daily vocabulary after each class.

Lipids and Nucleic Acids

Lipids:  The monomers of lipids are fatty acids and glycerol. They are not considered true polymers because they are made of two different monomers.  Fats, oils, and steroids belong to this group of macromolecules.

Example of a steroid

Nucleic Acids: The monomers of nucleic acids are nucleotides.  DNA and RNA are examples of nucleic acids.  They are the blueprint of life.  

The DNA Molecule

Proteins

Proteins are made of the monomers amino acids.  Proteins account for more than 50 % of the dry weight of most cells and are instrumental in almost everything.  All proteins are made of 20 kinds of amino acids

The general structure of an amino acid




 
 

Introduction to the Macromolecules.

You will be introduce to the macromolecules and their monomers;
1) Carbohydrates ( Polysaccharides)  - monomers glucose
2) Proteins - monomers  amino acids
3) Lipids -  monomers fatty acids and glycerol
4) Nucleic acids - monomers nucleotides.

Starch, glycogen and cellulose are also examples of polysaccharides.  Excess glucose is stored in plants as starch, and in animal tissue as glycogen.  The cell wall of plants called cellulose are made of glucose.

Polysaccharides

Click on the images to enlarge.

Discussion of Chapter 2 Test and Introduction to Chapter 3

You will spend the first half of the class reviewing the questions and answer to the test.
If desired, you will be able to meet individually to review your test.

The second half of the class will be spent reviewing carbon chemistry. Unlike compounds formed from other elements, carbon compounds are far more numerous and varied.  There are several million carbon compounds known and several hundred thousands are synthesized each year.

The most common elements found with carbon are hydrogen, oxygen, nitrogen, sulphur, phosphorus, and the halogens.

 

End of Chapter 2 and start of Chapter 3

Chapter 2 Multiple Choice Test.

After the test, you will review carbon chemistry by examining the diversity of carbon based compounds.

September 10, 2018 - September 14, 2018

Friday, September 14, 2018

Chapter 2 Packet is due and will be graded.  It should include all the items listed in Thursday's post.

The Water Properties Lab will also be graded.

Thursday, September 13, 2018

You will watch the video "Forces of Nature" a BBC production with PBS and takes notes highlighting how the elements discussed are used in the bodies of animals.

The following information will be turned in during class tomorrow:
1) Completed packet
2) class notes
3) home notes
4) 7 vocabulary words
5) Notes from the Forces of Nature Video
6) Table of Contents

Wednesday, September 12, 2018

You will take notes on the rest of the chapter.  We will also complete pages 13 and 14 of the chapter 2 packet in class.

Water: The Uncommon Liquid
Irregularity of the density of water. The highest density of water occurs when the molecules are packed tightly together.  The crystal arrangement of ice has a lot of space incorporated in it. There are fewer molecules of water per volume in ice, than there are in water.

 

Tuesday, September 11, 2018

You will start the class defining three vocabulary words. The words are listed under the vocabulary tab above.
Lab activity;  You will work in groups of 2 to complete the Water Properties Lab.

Note the difference between
cohesion and adhesion

                                       

Monday, September 10, 2018

Chapter 2: The Chemical Basis of Life

Continue working on the chapter 2 Packet. Skip the fill in the blank pages.

You will have brief notes on the properties of the elements based on the arrangement of the periodic table. Also we will discuss the Water.  We will discuss the properties of water; the reason it is considered a miracle solvent.

Click the link to view : Properties of Water