. What organelles are the main components of the endomembrane system? a. Cell membrane and cell wall b. ER and Golgi apparatus c. Mitochondria d. Nucleus, nuclear pores, and nucleolu 2. What are the two most important structures involved in moving chromosomes during mitosis? a. centrosomes and chromosomes b. centrosomes and mitotic spindle fibers c. kinetochores and chromosomes d. kinetochores and mitotic spindle fibers 3. What is nuclear localization signal? a. A signal built into a protein that directs it to the nucleus b. A molecule that is attached to nuclear proteins, so that they are retained inside the structure c. A component of the nuclear pore complex d. A stretch of amino acids that directs proteins from the nucleus to the ER

. What organelles are the main components of the endomembrane system? a. Cell membrane and cell wall b. ER and Golgi apparatus c. Mitochondria d. Nucleus, nuclear pores, and nucleolu 2. What are the two most important structures involved in moving chromosomes during mitosis? a. centrosomes and chromosomes b. centrosomes and mitotic spindle fibers c. kinetochores and chromosomes d. kinetochores and mitotic spindle fibers 3. What is nuclear localization signal? a. A signal built into a protein that directs it to the nucleus b. A molecule that is attached to nuclear proteins, so that they are retained inside the structure c. A component of the nuclear pore complex d. A stretch of amino acids that directs proteins from the nucleus to the ER

Biology: The Dynamic Science (MindTap Course List)

4th Edition

ISBN:9781305389892

Author:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Publisher:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Chapter10: Cell Division And Mitosis

Section: Chapter Questions

Problem 2ITD

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Part of cell division is that chromosomes are moved the center of the cell and then back to the poles of each newly made daughter cell. These chromosomes are moved to the center of the cell by.. Select one: a. Myosin walking on microtubules towards the center of the cell (slow growing end of microtubule) b. Oar-like motion of myosin with microfilaments causing each half of the cell to move closer together c. kinesins walking on microtubules towards the center of the cell (fast growing end of microtubule) d. vesicles floating on microfilaments of the cortical cytoskeleton
1) What phase of mitosis is this? Answer: 2) What is the indicated structure 1? select one. a. chromosome b. chromosome with two sister chromatids c. centrioles/centrosome d. spindle fibres e. metaphase plate 3)If the diploid (2n) number of this cell is 8 how many chromosomes are present? 4) If the diploid (2n) number of this cell is 8 how many sister chromatids are present? 5) If the diploid (2n) number of this cell is 8 how many homologous pairs are present?
Asap
During this stage of mitosis, the chromatin coils to form chromosomes, the nuclear envelope disappears, the nucleolus dissolves, spindle fibers are formed, and the centrioles migrate to the poles. a. prophase b. metaphase c. anaphase d. telophase
Chromosomes are visible under microscope during cell division because a. Thickening of chromatins b. Disappearance of the nucleoli c. Disintegration of the nuclear membrane d. Duplication of the DNA
The functions of centrioles include ...... a.serving as the site for ribosomal RNA synthesis b.producing ATP c.providing a whiplike beating motion to move substances along cell surfaces d.organizing the mitotic spindle in cell division
At what stage in mitosis do the sister chromatids line up along the midline of the cell? a. Metaphase b. Anaphase c. Telophase d. Prophase
Centrosomes move to opposite ends of the cell in what phase of mitosis? a. Metaphase b. Anaphase c. Telophase d. Interphase e. Prophase
Which of the following is responsible for moving chromosomes to the metaphase plate? A. Centromeres B. Cohesins C. Nuclear envelope D. Spindle microtubules 24.
During this stage of mitosis, the chromosomes become attached to the spindle fibers. A. Prometaphase B. Prophase C. Metaphase D. Anaphase E. Telophase
What cellular organelle direct formation of mitotic spindle during cell division and also form the bases of cilia and flagella? A. Peroxisomes B. Centrioles C. Cytoskeleton D. Microtubules
In the image, you can see one cell that is in the process of mitosis. (Note that chromosomes are stained dark blue.) In which stage is this cell currently? A. Telophase B. Metaphase C. Interphase D. Prophase E. Cytokinesis F. Anaphase