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Quiz #2 Return to Assessment List Comments: Please refer to "Quiz #2 - special" as set up by classroom support Part 1 of 8 - 0.0/ 16.65 Points Question 1 of 30 0.0/ 3.33 Points Meiosis results in a change in chromosome number indicated by: A. 2n to 2n in diploid organisms, n to n in haploid organism B. N to n C. N to 2n D. 2n to n E. 2n to 2n Answer Key: D Feedback: Meiosis results in a halving of the chromosome number from 2n (diploid) to n (haploid). Meiosis does not occur in an organism which is already haploid (such as a plant gametophyte). Question 2 of 30 0.0/ 3.33 Points In plants, cytokinesis occurs with the formation of: A. A cell plate B. A cleavage furrow in the nuclear membrane C. A cleavage furrow in the cytoplasm D. A cleavage furrow in the cell wall E. Asters and centrioles Answer Key: A Feedback: In plant cells, cytokinesis involves the formation of a new plasma membrane and cell wall at a cell plate. Question 3 of 30 0.0/ 3.33 Points During ______________, the nuclear envelope disappears, and the chromosomes become distinct. A. Anap hase B. Telop hase C. Interp hase D. Prop hase E. Meta phas e Answer Key: D Feedback: During prophase, chromatin is condensing into visible chromosomes, and the nuclear envelope is fragmenting. Question 4 of 30 0.0/ 3.33 Points If the total number of chromosomes in parent cell is six, then after mitosis there will be: A. Three chromosomes in each daughter cell B. Six chromosomes in each daughter cel C. 12 chromosomes in each daughter cell D. Three chromosomes in one daughter cell and six chromosomes in the other cell E. Two chromosomes in each daughter cell, one from each parent Answer Key: B Feedback: Following mitosis, daughter cells have the same chromosome count as the parent cell. Question 5 of 30 0.0/ 3.33 Points Which of the following statements about mitosis and meiosis is incorrect? A. Meiosis-two divisions, mitosis- one division B. Meiosis-non- identical, mitosis- identical C. Meiosis- diploid, mitosis- haploid D. Meiosis-four daughter cells, mitosis-two daughter cells E. Meiosis-sex cells, mitosis- somatic cells Answer Key: C Feedback: Meiosis produces haploid nuclei from a diploid nucleus. Mitosis does not alter the chromosome number. Part 2 of 8 - 0.0/ 16.65 Points Question 6 of 30 0.0/ 3.33 Points Which of the following is not a beneficial role that bacteria play? A. They produce oxygen. B. They produce antibiotics. C. They function as bioremediat ors. D. They are decomposer s. E. They can be used in gene therapy. Answer Key: E Feedback: Viruses, not bacteria, can be used in gene therapy. ... View Full Document

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