2. Do Now In the equation below, which molecules are considered the substrates? monosaccharide + monosaccharide  disaccharide + water

3. Two chemical equations are shown below. What do letters A and B represent?

4. 1.The bond that joins two amino acids together is known as a __________ bond 2.What organelle in the cell is the original site for the synthesis of enzymes? (hint: Enzymes are PROTEINS) 3.What happens to the rate of enzyme action when the temperature of a reaction increases? Quiz Thursday on Proteins and enzymes

5. Enzymes- VideoVideo

6. 2006-2007 Nucleic acids: Information molecules

7. Nucleic acids carry the genetic information in a cell. Function: To store and transmit genetic information

8. The basic unit of a nucleic acid is a nucleotide Polymer= nucleic acid monomer= nucleotide nucleotide – nucleotide – nucleotide – nucleotide

9. Nucleic acids are in all cells Nucleic acids are composed of the elements: C,H,O,N,P Examples of nucleic acids: DNA: Deoxyribonucleic acid RNA: Ribonucleic acid

10. Regents Biology A A A A T C G C G T G C T Genes (DNA) are needed to run bodies every day … to make you and me … to make new cells … to make babies!

11. Regents Biology Nucleotides  Consists of three parts:  5-Carbon Sugar  Phosphate Group  Nitrogenous Base Structure of a nucleotide: (Take out colored pencils. Lets Draw!!)

12. Regents Biology Nucleotide chains  Nucleic acids  nucleotides chained into a polymer  DNA  double-sided  double helix  A, C, G, T  RNA  single-sided  A, C, G, U phosphate sugar N base phosphate sugar N base phosphate sugar N base phosphate sugar N base strong bonds RNA

13. Regents Biology

14.  ATP is a high energy nucleotide with three phosphate groups

15. Regents Biology  Complete your summary chart of macromolecules!