BELL WORK: Copy the question below and write your entire answer (NOT just the letter choice!). Which of the following is not an example of a lipid? a. The waxy coating on a leaf b. The main component of a cell membrane c. A polysaccharide d. An unsaturated fat Set up the next page in your journal Page: 23 Date: Title: Proteins Essential Question: Why are proteins so important? Yes, Cornell notes! Before we begin Glue the picture in the top left corner of your notes. Under the picture, write AMINO ACID. Structure: have a variety of different shapes contain Carbon, Hydrogen, Oxygen, and Nitrogen (CHON) contain an R-group Proteins.here we go! R-group is like an ID card each R-group has a charge that attracts or repels other R- groups o this causes each protein to fold and twist in very unique ways Function (determined by the shape): determine your traits o skin color, eye color, hair color, even body odor can be based on your bodys proteins! build muscle & bone o contain 4 calories per gram o fewer bonds = less energy speed up chemical reactions in the body help fight disease Examples: enzymes o end in ase (amylase, lactase) antibodies hormones collagen meat eggs Monomer = amino acid There are 20 essential amino acids, each with a different R-group. Amino acids form peptide bonds to make Polymer = polypeptide What do we call the pieces of a protein? POLYPEPTIDES: At the bottom of your notes, copy and answer the question below: Why does the meat on a slice of bacon cook faster than the fat? Use the words protein, lipid, bond, & energy in your answers! Burning Questions Alka-Seltzer Lab See how long an Alka-Seltzer tablet takes to completely dissolve in 100 mL of room temperature water. While you wait, fill in the blanks under Background on your lab sheet. Alka-seltzer dissolving in water is an example of a chemical reaction. In class, you observed your teacher dissolve one tablet(s) into 100 mL of pure water at room temperature, which took _________ seconds. Alka-Seltzer Lab With your group, figure out a way to make the tablet dissolve faster. You may only change ONE VARIABLE! Possible changes include: liquid its placed in amount of water temperature of water size of tablet Be creative! Think of something on your own, as long as youre only changing ONE thing about the experiment. Write out your materials list and your procedure. You do NOT have to fill in all the spaces!! You will perform your lab tomorrow at the beginning of class. I will provide beakers, water, a heat source, and Alka-Seltzer. Any other materials are YOUR responsibility! Foldable Time!!! 1.At the bottom of the Monomer box, write the monomer of a protein. 2.At the bottom of the Polymer box, write the polymer of a protein. 3.Draw an arrow from the monomer to the polymer. 4.On the INSIDE of the Protein door, write THREE functions and FOUR examples. 5.On the FRONT of the Protein door, draw an amino acid molecule. Be sure to label the R-group!