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test 1 - Lecture time(circle one 9 am 10 am 1 pm Name Bio...

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Lecture time (circle one) 9 am 10 am 1 pm Name:______________________________________ Bio 311C Fall, 2006 Exam 1 1. (8 pts) Fill in the blanks with a specific type of chemical bond. The nucleotides of RNA are held together by ____________________________. The lighter density of ice relative to water is due to the stable _________________ bonds that form between the water molecules. In table salt, the sodium and the chlorine ions are held together by __ _________________ bonds. _________________ bonds are generally not a factor contributing to tertiary protein structure. 2. (8 pts) A. List the four principle biological molecules. B. Using the list, assign the appropriate molecule to the given description. ______________ Principle short term energy carrier molecule in cells ______________ Structural material in plants ______________ Structural material in insects ______________ Phosphatidylcholine
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3. (6 pts) Describe (or draw) the spatial arrangement of the 4 main molecular components in the plasma membrane and list how each contributes to membrane function. 4. (10 pts) Fill in the blanks: The difference between a ______________ and a ______________ is due to four levels of molecular structure and functionality.
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