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Chapter 8 Bio Quiz

33 Questions  I  By RachelDobrin
Chapter 8 bio quiz

  
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1.   There are a number of differences between fission of a bacterium and human cell division. Which of the following is not one of them?
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2.  You would be unlikely to see which of the following human cells dividing?
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3.  Which of the following correctly matches a phase of the cell cycle with its description?
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4.  In telophase of mitosis, the miotic spindle breaks down and nuclear membranes form. This is essentially the opposite of what happens in
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5.  Sister Chromatids
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6.  Which of the following is not a function of miotic cell division in animals?
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7.  Meiosis .
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8.  Crossing over is . a)important in genetic recombination b)what makes a cell become cancerous c) a key process that occurs during mitosis d)an important mechanism of chromosome repair e) what prevents cells from multiplying indefinently in cell culture
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9.  Human __ are diploid, and human __ are haploid .
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10.  Which of the following does not lead to genetic variability? a)random fertilization . b)crossing over during meiosis c) division of chromosomes during anaphase of mitosis d) orientation of chromosomes during metaphase 1 of meiosis e) mutation
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11.  Most cells will divide if they receive the proper signal at a checkpoint in the ___ phase of the cell cycle
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12.  Geneticists suspect that the extra chromosome seen in Down syndrome usually comes from the egg, rather than the sperm, because
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13.  Which of the following chromosomal alterations would you expect to have the most drastic consequences?
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14.  In certain fungae and algae, cells undergo mitosis repeatedly without subsequently undergoing cytokinesis. What would result from this? a)a decrease in chromosome number b)inability to duplicate DNA c) division of the organism into many cells, most lacking nuclei d)large cells containing many nuclei e)a rapid rate of sexual reproduction .
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15.  Which of the following is the most significant difference between mitosis and meiosis? a)chromosomes are duplicated before mitosis b)Meiosis is not followed by cytokinesis c) Homologous pairs of chromosomes are split up in meiosis . d) a spindle formed of microtubules moves the chromosomes in mitosis e)crossing over occurs in mitosis
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16.  If there are 22 chromosomes in the nucleus of a toad skin cell, a toad egg would contain __ chromosomes.
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17.  Which of the following carry the same genetic information? . a)sister chromatids b)x and y chromosomes c)all autosomes d)homologous chromosomes e)all haploid cells
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18.  A cell biologist carefully measured the quantity of DNA in grasshopper cells growing in cell culture. Cells examined during the G2 phase of the cell cycle contained 200 units of DNA. What would be the amount of DNA in one of the grasshopper daughter cells seen in telophase of mitosis? .
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19.  What would be the quantity of DNA in one of the grasshopper cells (question 6) produced by telophase 2 of meiosis? . a)50 units b)100 units c)between 50 and 100 units d)200 units e)400 units
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20.  The two chromosomes of a homologous pair a) carry identical genetic information at corresponding locations b) carry information for the same characteristics at different locations c) carry identical genetic information at different locations d) carry information for the same characteristics at corresponding locations e)any of the above is possible.
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21.  A picture of a dividing pigeon cell taken through a microscope shows that the cell contains 7 chromosomes, each consisting of 2 chromatids. This picture might have been taken during . a)metaphase of mitosis b)prophase i of meiosis c)telophase 2 of meiosis d)prophase 2 of meiosis e)telophase of mitosis
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22.  A culture of mouse cells is treated with a chemical that interferes with the activity if microfilaments. Which of the following will probably be affected the most? a) mitosis b)chromosome duplication c)pairing of homologous chromosomes d) cytokinesis e) joining of sister chromatids at the centromere .
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23.  A zoologist examined an intestine cell from a crayfish and counted 200 chromosomes, each consisting of 2 chromatids, at prophase 1 of mitosis. What would he expect to see in each of the four cells at telophase 2 of meiosis if he looked in the crayfish ovary?
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24.  A karyotype would be least likely to show which of the following?
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25.  If an intestinal cell in a grasshopper contains 24 chromosomes, a grasshopper sperm cell contains __ chromosome
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26.  A biochemist meausred the amount of DNA in cells growing in the labratory and found that the quantity of DNA in a cell doubled
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27.  Which of the following is not a function of mitosis in humans?
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28.  A micrograph of a dividing cell from a mouse showed 19 chromosomes, each consisting of two sister chromatids. During which of the following stages of cell division could this picture have been taken?
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29.  Cytochalisin B is a chemical that disrupts microfilaent formation. This chemical would interfere with
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30.  It is difficult to observe individual chromosomes during interphase because
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31.  A fruit fly somatic cell contains 8 chromosomes. This means that _ different combinations of chromosomes are possible in its gametes .
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32.  If a fragment of a chromosome breaks off and then reattaches to the original chromosome but in the reverse direction, the resulting chromosomal abnormality is called .
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33.  Why are individuals with an extra chromosome 21, which causes down syndrome, more numerous than individuals with an extra chromosome 3 or chromosome 16? a) there are probably more genes on chromosome 21 than on the others b) chromosome 21 is a sex chromosome and chromosomes 3 and 16 are not c) down syndrome is not more common, just more serious d) extra copies of the chromosomes are probably fatal e) nondisjunction of chroosoe 21 probably occurs more frequently .
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