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Unformatted text preview: markowitz (am45362) 04b POST lab huq (47985) 1 This print-out should have 5 questions. Multiple-choice questions may continue on the next column or page find all choices before answering. 001 2.0 points pA sea urchin extract was diluted 100 times and examined under a microscope using a hemacytometer. What is the total density of sperm cells per mL of the initial sperm extract if the average of 30 cells were counted in a volume that encompassed 1 X 10sup- 4/sup mL on the hemacytometer grid?/p 1. 3.00 x 10sup7/sup sperm cells/mL extract CORRECT 2. 3.00 x 10sup-6/sup sperm cells/mL extract 3. 3.00 x 10sup-8/supsperm cells /mL extract 4. 4.00 x 10sup4/supnbsp;sperm cells/mL extract 5. 3.00 x 10sup-4/sup sperm cells /mL extract Explanation: phemacytometer/p 002 2.0 points pStomata are emMOST /emlikely to be foundnbsp;as part ofnbsp;which of the follow- ing specialized tissue(s)?/p 1. root endodermis1....
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This note was uploaded on 02/28/2012 for the course BIO 205L taught by Professor Hanson during the Fall '07 term at University of Texas at Austin.
- Fall '07
- molecular biology