2. Which type of molecule includes an example with a long-chain carbon backbone? 3. In the molecule referred to in the previous question, what is the dominant element attached to the carbon backbone? HYDLOGE N 4 . T he fatty acid chain of the lipids is often referred to as a hydrocarbon chain. Discuss with your group why the chain is given this name and write a one-sentence definition for a hydrocarbon. B/C ITS MADE OF HTC 5. Which molecule has a central carbon atom with four different components around
it? Amino Acids 6. Which molecule has a sugar, nitrogenous base, and phosphate group? NoLLEIC ACID S 7 . Discuss with your group members some similarities among all four types of molecules. List as many as you can. C,H, O e s truct u a nino a co mmor 8 . What is the chemical formula of the first carbohydrate molecule shown? Co hizo 9. What three structural groups shown do all amino acids have in common? O rin Amine group - NHz , Carboxyl group coh e side. 10. There are 20 naturally occurring amino acids, and each one only varies in the structure of the Ch ain R side chain. Two amino acids are shown in Mode l 1. What are the R side chains in each? CYSTEI NE CHQ SH alanine -CH2 Read This! During chemical reactions, the bonds in molecules are continually broken and reformed. To break a bond, energy must be absorbed.
When bonds are formed, energy is released. If more energy is released than absorbed during a chemical change, the process can be used as a source of energy. A general rule for processes such as respiration is the more carbon atoms there are in a molecule, the more energy that molecule can provide to the organism when it is used as food. POGIL" Activities for High School Biology 311 . Using the information from above , is a carbohydrate or a lipid more likely to be a good source of energy for an organism ? LIPID - M O RE CA RB ONS STO P Model 2 – Bi ochemical Reactions В .
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