chapter 5 quiz
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| The cell cycle has four main stages – G1, S, G2, and M. What occurs in the cell during each stage? | 1.GAP1 (G1) – cell growth and normal functions occur2.DNA Synthesis (S) – copies DNA3.GAP 2 (G2) – additional growth4.Mitosis (M) – includes division of the cell nucleus (mitosis) and division of the cell cytoplasm (cytokinesis)
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| 4)What is the relationship between cell surface and its volume? | 1.Surface area must allow for adequate exchange of materials; volume increases faster than surface area; the larger the surface area, the greater the exchange of materials
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| 4)You know that a chromosome is a very long, continuous strand of DNA. How do proteins help condense chromosomes? | 1.DNA wraps around proteins (histones) that condense it
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| 4)How does the process of cytokinesis differ from the process of mitosis? | 1.Cytokinesis is the division of the cytoplasm; mitosis is the division of the cell nucleus
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| 4)List one similarity and one difference between binary fission and mitosis | 1.binary fission both forms of asexual reproduction where offsprings created by a single parent; Binary fission differs from mitosis as it occurs in prokaryotes and the cell simply divided into 2 new daughter cells; Mitosis differs from binary fission as
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| 4)List 3 characteristics of stem cells | 1.they can divide and renew themselves2.they remain undifferentiated in form3.they develop into a variety of specialized cell types
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| 4)Describe how tissues, organs, and organ systems are similar. | 1.Tissues are groups of cells that perofm a similar function; organs are groups of tissues that perform a specific or related function; organ systems are groups of organs that carry out similar functions
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