Biology


 * Biology --see all the units on the bottom left

Online Access to the Holt Biology Book** This tool allows you to see the entire books pages without taking a book home. There are many additional resources that can be used such as practice quizzes, visual concepts, and audio readings of the text. [|Go to http://my.hrw.com] User Name: yeomanm Password: saydel3 Click on Go to the Online Textbook





This teacher has very nice [|labs]

Building Macromolecules A paper-scissor-tape activity used to help students envision the process of synthesis -- building macromlecules out of smaller subunits  [|cell video]
 * [|Instructions]
 * [|Photos] -- my classes in action (both Regents and AP Biology).
 * [|Glucose] -- print on many different colors of paper to symbolize different sugars. Have students name each sugar with any name they want as long as it ends in //-ose//. //Kimose// is one of my favorites... or "ILoveBioTheMose"! Students can get very creative!
 * [|Water Drops (large)] -- I print on blue paper to symbolize water.
 * [|Water Drops (small)] -- easier to use for building fats. I print on blue paper to symbolize water.
 * [|Glycerol (legal)]
 * [|Glycerol (letter)] -- in case you don't have legal size paper.
 * [|Saturated Fatty Acid (legal)]
 * [|Saturated Fatty Acid (letter)] -- in case you don't have legal size paper.
 * [|Unsaturated Fatty Acid (legal)] -- print on different color paper than saturated fatty acid to accent difference.
 * [|Unsaturated Fatty Acid (letter)] -- in case you don't have legal size paper. Print on different color paper than saturated fatty acid to accent difference.
 * [|DNA template] -- have each group cut this template page down the middle and tape the two template strands end-to-end to make a longer chain for the template. I tend to copy these onto card stock so they are sturdier to hang in the classroom.
 * **DNA monophosphate bases** -- Print each base's page in a different color and have students cut apart to build the complement to the DNA template from above. I tend to copy these onto card stock so they are sturdier to hang in the classroom. These are //monophosphate// nucleotides for the introduction to building the DNA molecule.
 * [|Adenine]
 * [|Thymine]
 * [|Cytosine]
 * [|Guanine]
 * [|DNA triphosphate bases] -- These are //triphosphate// nucleotides for a higher level of understanding of how a DNA molecule is built (for AP students). All triphosphate bases are on one page. Have students cut apart to build the complement to the DNA template from above, but have them model the cleaving off of the diphosphate by DNA polymerase so they understand the energetics of the process. I tend to copy these onto card stock so they are sturdier to hang in the classroom.
 * [|Amino Acids] -- I have been wanting to improve these a bit but I haven't had the time. They are fine the way they are. Please use them. I have used them for years -- I just wanted to (obsessively) polish them. I print each one on a different color as much as possible. I give each student lab group an amino acid sequence to build (included in this ZIP archive). I ask them to use their text to identify & label each amino acid in their sequence and determine if each is polar (hydrophilic) or nonpolar (hydrophobic). They then bond the sequence using the water droplets for dehydration synthesis and then they have to predict how this chain will behave in the aqueous solution of the cell -- which parts will fold inward and which outward. I give them a lot of leeway on the last part. They then have to name their polypeptide with a name ending with //-in//, like most proteins. BTW, the amino acids may look slightly differently in the book depending if they are illustrated as ionized or not -- that makes for a good discussion about the effects of biochemistry in the watery environment of the cell.