hw 6 answers

hw 6 answers - online homework 6 answers

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HW #6- KEY 1. Which of the following statements about collagen is INCORRECT? A. There can be numerous types of collagen in multicellular organisms B. It is produced from polymers of amino acids. C . It tends to promote the "sticky" characteristics of the ECM. D. Its breakdown is a contributing characteristic of wrinkling during aging. E. It is a major component of the ECM for cartilage and bone. 2. The control of the cell cycle involves all of the following EXCEPT A. Proteins cyclins and cyclin-dependent kinases are responsible for advancing a cell through the phases. B. G2 checkpoint which checks for DNA damage, determines if all of the DNA is replicated. C. Metaphase checkpoint which determines if all chromosomes are attached to the spindle apparatus. D. Cytokinesis which involves the formation of cleavage furrow to separate the cells. E. The restriction point determines if conditions are favorable for cell division. 3. Which of the following statements is correct about the cell cycle? A. The cell cycle is a sequence of replication and division that produces a new cells. B. The phase of the cell cycle are G1, S, and M phases. C. In actively dividing cells, the S and G2 phases are collectively known as interphase. D. When the S phase of the cell cycle is finished, a cell actually has twice as many chromatids as the number of chromosomes in the G1 phase. E. During G2 phase, the cell grows and copies its chromosomes in preparation for cell division. 4. Which of the following statements is incorrect concerning sister chromatids? A. The formation of sister chromatids doubles the amount of DNA in a cell. B. Sister chromatids consist of two identical copies of a single homologue. C. Sister chromatids are held together at the centromere by kinetochore proteins. D. Sister chromatids are formed during the S phase of the cell cycle. E. Sister chromatids separate during telophase. 5. At the end of meiosis I A. cells are haploid. B. cells are diploid. C. sister chromatids are in separate cells. D. the homologous pairs are in separate cells. E. the cells are haploid and the homologous pairs are in separate cells.
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This note was uploaded on 12/16/2010 for the course BIO 122 taught by Professor Anandan during the Fall '08 term at Drexel.

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hw 6 answers - online homework 6 answers

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