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Bio practice - BIOL 200(Section 921 Midterm Exam Review...

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BIOL 200 (Section 921) Midterm Exam Review Questions Midterm Exam (In class) on June 25, 2009, 1-1:50 PM Review Questions for Midterm examination Question 1. List the following items in order of size from the smallest to largest: A. Nucleosome smallest B. Mitochondrion C. Diameter of a DNA molecule largest Question 2. Give experimental evidence to support that DNA, and not protein, is a genetic material. Question 3 . Fill in the blanks: a. Disulfide bonds can form between two ___________ side chains in proteins. b. The 3’end of RNA is modified by the addition of __________________. c. Nucleotides are joined together by ______________ linkage between 5’and 3’ carbon atoms to form nucleic acids. Question 4. Short answers. a. RNA splicing is considered an important rather than a wasteful process? Explain. b. How do we know the membrane is "fluid"? c. What are introns? When are they removed? d. What is an aminoacyl-tRNA and how is it made? Question 5. Briefly describe the structure-function relationship for each of the following terms: a. Small nuclear ribonucleoprotein particles: b. tRNA: c. Lysosomes:
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