Bild 1 midterm1 solutions

Bild 1 midterm1 solutions - Kang Ko OH Wed 11am-11:50am at...

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Kang Ko OH: Wed., 11am-11:50am at CLICS 2 nd floor [email protected] Midterm Practice Questions -- Choose ONE best answer. 1. Polypeptide: A. is a protein B. is formed by dehydration reaction C. is different from another polypeptide if the sequence is different D. A and B E. all of the above 2. Protein functions as: A. enzymatic proteins, in which an enzyme is used once and broken down by lysosome to make up a new functional enzyme B. receptor proteins, in which receptors inside the cell binds hydrophilic hormone to elicit a cellular response C. transport proteins, in which hemoglobin binds oxygen molecules to transport them from lungs to tissues D. all of the above E. none of the above 3. Amino acid: A. always has an amino group and a carboxyl group B. can be hydrolyzed to form peptide bond C. has 20 different R groups D. is a monosaccharide E. A and C 4. Primary structure of a protein: A. must be very lengthy so that it can interact with lots of substances B. is not functional C. is formed by interactions such as hydrogen bonding, disulfide bridge, and ionic bond D. is synthesized by nucleus E. none of the above 5. In tertiary structure of a protein: A. the folding is determined by interactions between R groups rather than backbones B. the strongest interaction is disulfide bridge C. there must be at least 1,000 amino acids used D. A and B E. all of the above 6. The folding of a protein: A. can be assisted by other enzymes such as chaperonin B. depends on physiological factors such as pH, osmolarity and temperature C. mostly cannot reoccur once it has been denatured D. usually cannot be done artificially…yet E. all of the above 1
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Kang Ko OH: Wed., 11am-11:50am at CLICS 2 nd floor [email protected] 7. DNA: A. is an abbreviation for deoxynucleic acid B. is only found in nucleus C. is a polynucleotide connected by phosphodiester bond D. is different from RNA that it has hydroxyl (-OH) group on 2’ carbon E. B and C 8. Nucleotide: A. consists of a base, sugar, and a phosphate group B. of DNA is always different from that of RNA C. is a polypeptide that runs in 5’ to 3’ direction D. A and B E. all of the above 9. mRNA: A. has bases of A, U, C, and G
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This note was uploaded on 06/12/2008 for the course BILD 1 taught by Professor Boulanger during the Spring '08 term at UCSD.

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Bild 1 midterm1 solutions - Kang Ko OH Wed 11am-11:50am at...

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