Organic Molecules wrap up and study island set up

Today's daily question was a group activity and we spent about half the class period on it.  The instructions were:

Write out the following table, determine which students accurately described the organic molecule correctly and put a star by them.  Those students that did not – Please “tell them” (as if you were grading this paper), what they did wrong and which organic molecule they DID describe. 

I split you into groups then and assigned you each a student, you were to tell me first if they were right or wrong.  If they were right - you were to tell me what specifically they said that was key, if they were wrong you also made notes.  This is what we came up with!!

 

 

After that I had you log on to your Study Island accounts.  We will be using Study Island throughout the year.  Two assignments have already been posted and you will get to work on those tomorrow after the daily question quiz.

 

The website is www.studyisland.com

Username:  FIRSTLAST.ECASD

Password: 0000StudentID

 

It will prompt you to change your password.

 

You'll go to MY CLASSES and the drop down menu you should see Biology (evrard)

You will then see the current assignments

When you click on an assignment ALWAYS look at the Additional Info for any special instructions for each assignment.

Organic molecule Wrap up

Wednesday September 25th

.Looking at the following chemical formula, what kind of biomolecule would you infer this to be?  Why?

               C₁₉H₂₈O₂       

this is an example of lipid.  I know this because there is a large amount of Carbon and Hydrogen.  Some of you put Carbohydrates because it has carbon, hydrogen and oxygen but that is incorrect.  While carbohydrates are made up of these same three molecules the RATIO is much different.  Carbohydrates would have MUCH more Oxygen (usually as much oxygen as carbon)

Proteins have MANY different functions – in fact proteins are pretty much involved in ALL cellular functions in one way or another.  The structures of these proteins are incredibly complex.  First, what subunits (monomers) make up protein?

Amino Acids

Next, what determines the function of different proteins?The STRUCTURE directly determines the proteins function.  How the amino acids interact with each other and fold on top of each other determines that structure.

We finished out the Organic Molecules section then I had you complete your introductory activity for a grade

here were the notes for today.

Lipids and Proteins

These were the daily questions - we spent a while tearing them apart again to get you used to the format that keystone
exam questions tend to come in.  Notice on the second one the correct answer is Dehydration synthesis, if the arrow had been pointing the other direction (like the green arrow) it would have been hydrolysis.

We used today to try and just plow through some notes.  I realize this stuff is getting a little dry, but you will see how this all works together soon!!

here was a model we used of a lipid..... lots and lots of carbons bound to hydrogen!!

Look at how many more bonds are found in a lipid molecule vs a carbohydrate

Some of you listened to the following podcast about Jello

Condensation reactions

Friday we had our daily question quiz and wrote down a couple slides of notes that we then worked through today... here we go

Monday September 23rd

Carbohydrates, proteins, and nucleic acids are three examples of polymers found in living things.  Which characteristic do they all share?

A.  Their molecular structures are the same

B.  They are formed from the same monomers

C.  Their synthesis is driven by condensation reactions
D.  The bond configurations between their monomers are the same.

Other than a source of energy – what other functions do carbohydrates have?

Stuctural support (cellulose and chitin) 

Cellular recognition

Which statement BEST describes how starch is formed from glucose molecules?

A.  Glucose macromolecules chain together to form starch monomers

B.  Glucose monomers chain together to form a starch macromolecule

C.  Glucose macromolecules dissolve and reform into starch monomers

D.  Glucose monomers dissolve and reform into a starch macromolecule

One group would take off an OH, the other an H

What you created was a disaccharide and water (which is
why its called a condensation reaction.) 

Carbohydrate Structures

Then I reminded you that carbohydrate literally means the
Water of Carbon and if we took a water molecule, broke it apart we got an -H and an -OH, for each carbon I had you add it's "water"

The question was really asking which of the following are carbon based molecules.  The four main organic biomolecules we are made up of are lipids, carbohydrates, proteins and nucleic acids.

For this question we spend a while talking about the answer choices.  A is just wrong, Carbon is not Trivalent (which means it has 3 valence electrons), B is a correct statement but does not answer the question.  C not only is an incorrect statement, even if it WAS true, that also does not answer the question.  D speaks to the nature of Carbon and its ability to form bonds (4 in fact) with other atoms.

First I had you build the basic ring structure with 5 of the carbons and an oxygen.

You then added the extra carbon to form the functional group

Remember the term 
Carbohydrate literally means the hydrate (water) of carbon, so if you tore a water molecule apart into OH and H, added it to each carbon you would be almost at a glucose molecule!!!

\And then you built the entire molecule!

Organic Chemistry Intro

 Notes for Today:

CDT's and Organic Chemistry Intro

Friday we wrapped up the properties of water with a daily question quiz and you turned in your lab write up. I also had you watch another crash course as an introduction to the next topic of Organic Chemistry.

 Yesterday and today you took your baseline CDT.  This will give me and you a good look at how you are progressing through the year.

I will be showing you all individually how you did, here is a look at how each class scored overall!!!

Lots of room to grow here, I told you that I didn't have many expectations of this first one.  I see that in each class there are at least a few of you that already have a pretty good foundation.  I hope to see those students rise into the Blue then.  For those in Red, don't lose hope!!  We haven't learned even a QUARTER of this material, there is lots of time to get you into the red.