Hey.
Ok, I need help with my biology homework again XD. I cannot wait until next semester when I won't have this anymore.
Cellular reproduction is the topic this time. (Ignore the weird numbering)
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3. Compare the structure of prokaryotic chromosomes and eurokaryotic chromosomes.
My book fails to tell us x_x.
Prokaryotes have no nucleus, whereas eukaryotes, of course, do.Quote:
6. What would happen if cytokinesis took place before mitosis?
The cell would probably split, but only one would have a nucleus, resulting in a polar body. I'm not too sure about this one though. Quote:
1. List two ways that meiosis differs from mitosis.
Mitosis creates two daughter cells, whereas meiosis creates four. Mitosis creates two cells of the same genetic makeup, but meiosis creates cells with slightly different genetic makeup.Quote:
6. Eplain why the chromosomes in the haploid cells that are produced by meiosis I look different from those produced by meiosis II.
Meiosis I divides one diploid cell into two haploid cells by separation of homologous chromosomes, but meiosis II divides two haploid cells into four haploid cells by separation of sister chromatids.Quote:
20. Do asexual organisms have homologous chromosomes? Explain your answer.
Not sure about this. Quote:
22. Which of the following cells have a diploid number of chromosomes? Explain your answer.
(a) cells in the G1 phase of the cell cycle
(b) cells in the G2 phase of the cell cycle
(c) cells in the M phase of the cell cycle
(a) Diploid. This is a time of major growth.
(b) Diploid. The cell is preparing itself for the M phase.
(c) Yes and no. The cell is diploid at some point in mitosis, but the chromosomes split and are divided into two cell. Quote:
1. Can mitosis occur in a cell in the absence of cytokinesis? Support your answer. If your answer is yes, provide a description of how the new cell would appear in the G1 phase of the cell cycle.
See the second question up there. It's basically the same. Quote:
5. For a cell to function efficiently, the magnitude of its surface area must greatly exceed that of its volume. Explain how cell division functions to maintain this relationshiop between surface area and volume and in doing so mantains cell homeostasis.
I think this is like telophase, but I'm not sure. Quote:
6. The events of mitosis in plans and animals are very similar with the exception of the absence of centrioles in plants. How has the absence of centrioles in plant cells influenced scientists' thinking about the function of centrioles in mitosis?
Scientists believe that centrioles may help organize microtubule assembly, but they are not essential to formation of the mitotic spindle.As usual, any help would be greatly appreciated and I would love you forever
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Love me forever.