Ch 12 Biology

40 Questions  I  By Dominique1.avery
Ch 12 biology
Mitosis and sister chromatids. 5 phases of division.

  
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1.  During ________ both the contents of the nucleus and the cytoplasm are divided.
A.
B.
C.
D.
E.
2.  During ________ the cell grows and replicates both its organelles and its chromosomes
A.
B.
C.
D.
E.
3.  What event does NOT take place before the star of mitosis?
A.
B.
C.
D.
4.  True or False? Mitosis takes place during the M phase, which is the longest phase of the cell cycle.
A.
B.
5.  Which term describes two recently replicated DNA strands that are joined together just before cell division?
A.
B.
C.
D.
6.  During which stage of mitosis are chromosome slined up in the center of the cell
A.
B.
C.
D.
7.  Which stage of mitosis is characterized by the didintegration of mitotic spindles and the formation of the two new nuclear membranes?
A.
B.
C.
D.
8.  To which part of the centromere do mitotic spindle fibers attach during prometaphase
A.
B.
C.
D.
9.  During which substage of mitosis do sister chromatids break apart and start moving to opposite poles of the cell?
A.
B.
C.
D.
10.  Which of the following is a function of the S phase in the cell cycle?
A.
B.
C.
D.
11.  The copying of chromosomes occurs during which of the following phases of the cell cycle?
A.
B.
C.
D.
12.  For the first several divisions of early frog embryos, cells proceed directly from the M phase to the S phase and back to M without gaps. Which of the following is likely to be true about dividing cells in early frog embryos?
A.
B.
C.
D.
13.  True or false? The M phase is characterized by the replication and division of a cell's chromosomes.
A.
B.
14.  If an organism normally has 34 chromosomes, how many molecules of DNA should there be in the G1 phase of the cell cycle?
A.
B.
C.
D.
15.  Which of the following events would cause the cell cycle to arrest?
A.
B.
C.
D.
16.  Nucleoli are present during _____.
A.
B.
C.
D.
E.
17.  Cytokinesis often, but not always, accompanies _____.
A.
B.
C.
D.
E.
18.  Chromosomes become visible during _____.
A.
B.
C.
D.
E.
19.  Centromeres divide and sister chromosomes become full-fledged chromosomes during _____.
A.
B.
C.
D.
E.
20.  Spindle fibers attach to kinetochores during _____.
A.
B.
C.
D.
E.
21.  During prophase a homologous pair of chromosomes consists of _____.
A.
B.
C.
D.
E.
22.  Http://media.pearsoncmg.com/bc/bc_campbell_biology_8/img/activities_quizzes/1211q.swfThis animation illustrates the events of _____.
A.
B.
C.
D.
E.
23.  Http://media.pearsoncmg.com/bc/bc_campbell_biology_8/img/activities_quizzes/1212q.swfThis animation illustrates the events of _____.
A.
B.
C.
D.
E.
24.  Http://media.pearsoncmg.com/bc/bc_campbell_biology_8/img/activities_quizzes/1213q.swf This animation illustrates the events of _____.
A.
B.
C.
D.
E.
25.  Http://media.pearsoncmg.com/bc/bc_campbell_biology_8/img/activities_quizzes/1214q.swf this illustrates the events of ________.
A.
B.
C.
D.
E.
26.  Http://media.pearsoncmg.com/bc/bc_campbell_biology_8/img/activities_quizzes/1215q.swf this illustrates the events of ________.
A.
B.
C.
D.
E.
27.  Http://media.pearsoncmg.com/bc/bc_campbell_biology_8/img/activities_quizzes/1216q.swf this illustrates the events of _________.
A.
B.
C.
D.
E.
28.  Http://media.pearsoncmg.com/bc/bc_campbell_biology_8/img/activities_quizzes/1217q.swf this illustrates the events of ________.
A.
B.
C.
D.
E.
29.  Which of the following is a function of meiosis but not mitosis in eukaryotes?
A.
B.
C.
D.
E.
30.  A human bone marrow cell, in prophase of mitosis, contains 46 chromosomes. How many chromatids does it contain
A.
B.
C.
D.
E.
31.  It is difficult to observe individual chromosomes with a light microscope during interphase because _____.
A.
B.
C.
D.
E.
32.  The kinetochores _____.
A.
B.
C.
D.
E.
33.  Which of the following correctly matches a phase of the cell cycle with its description?
A.
B.
C.
D.
E.
34.  In some organisms such as certain fungi and algae, cells undergo the cell cycle repeatedly without subsequently undergoing cytokinesis. What would result from this?
A.
B.
C.
D.
E.
35.  Which of the following is/are difference(s) between the fission of a bacterium and mitosis in human cells?
A.
B.
C.
D.
E.
36.  Cytochalasin B is a chemical that disrupts microfilament formation. This chemical would interfere with _____.
A.
B.
C.
D.
E.
37.  Cells will usually divide if they receive the proper signal at a checkpoint in the _____ phase of the cell cycle
A.
B.
C.
D.
E.
38.  A benign tumor, but not a malignant tumor, is one in which the cancerous cells _____.
A.
B.
C.
D.
E.
39.  Which of these is NOT a carcinogen?
A.
B.
C.
D.
E.
40.  _____ is a carcinogen that promotes colon cancer.
A.
B.
C.
D.
E.
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