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Chap. 5

chapter 5 quiz

QuestionAnswer
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)
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
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
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
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
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
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
Created by: morbidloner66
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