MCDB_1AL_Quiz_2_2010

MCDB_1AL_Quiz_2_2010 - Name _ TA _ MCDB 1AL Laboratory Quiz...

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Name _________________________ TA ________________________ MCDB 1AL Laboratory Quiz 2 November 1-5, 2010 Scantron Instructions: 1. Use a #2 pencil to complete the form. 2. Write your name and fill in the appropriate bubbles. 3. Write your perm. number in the ID number box and fill in the bubbles. 4. Fill in the entire rectangle of the answer you choose. If you erase, erase completely READ ALL QUESTIONS THOROUGHLY----IN ALL CASES, PICK THE BEST ANSWER 26 Questions - 1 Point Each Unless Noted Otherwise 1. The arrow is pointing to the ________ of the _______ A. archenteron, morula B. archenteron, gastrula C. archenteron, blastula D. blastocoel, morula E. blastocoel, blastula 2. What organ system will develop from the structure indicated by the arrow? A. Nervous B. Muscular C. Skeletal D. Gut 3. In which stage of Drosophila development is the organism immobile? A. 1st instar B. 2nd instar C. 3rd instar D. pupa 4. At which stage of development is this sea star embryo? A. Unfertilized Egg B. 2-cell C. 4-cell D. blastula E. gastrula 5. Practical: Examine the slide given under the 40X objective. What stage of mitosis is apparent? A. Metaphase B. Prophase C. Anaphase D. Telophase E. Cytokinesis MCDB 1AL Quiz 2 Version: 0 Page: 1
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6. The volume of liquid dispensed in a tube after using these three pipettes is closest to ______ μL. A. 872.93 B. 879.56 C. 910.16 D. 927.46 E. 944.90 7. You have run an agarose gel with a sample that contains DNA fragments of the following sizes: 200, 800, 8,000, and 100,000 base pairs. Based on the log scale shown to the left of the gel, which lane (A-E) most likely contains your sample. A. Lane A B. Lane B C. Lane C D. Lane D E. Lane E MCDB 1AL Quiz 2 Version: 0 Page: 2
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8. Spectrophotometers use the absorbance and transmittance of light to measure protein concentrations, which of the following is true? (0.5 points) A. Absorbance increases as protein concentration increases B. Absorbance decreases as protein concentration increases C. Transmittance increases as protein concentration increases D. Transmittance decreases as protein concentration decreases E. Both Transmittance and absorbance increase as protein concentration increases 9. According to Beer's Law, absorbance is proportional to A. The extinction coefficient of the substance being measured B. The concentration of the substance being measured
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This note was uploaded on 02/13/2011 for the course MCDB 1a taught by Professor Feinstein during the Fall '08 term at UCSB.

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MCDB_1AL_Quiz_2_2010 - Name _ TA _ MCDB 1AL Laboratory Quiz...

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