Performance
ZONE
134 CHAPTER 6Review
CHAPTER REVIEW
Using Key Terms
1.Prokaryotes reproduce asexually by 6E
a.disjunction. c.cytokinesis.
b.binary fission. d.mitosis.
2.The stage of the cell cycle in which a cell’s
DNA is copied is called the _______ phase.
a.S c.G 2
b.G 1 d.mitosis
3.Chromatids are 4A 6E
a.dense patches within the nucleus.
b.prokaryotic chromosomes.
c.two exact copies of DNA that make up
each chromosome.
d.structures that move chromosomes
during mitosis.
4.The process in which the cytoplasm of a
cell is divided is called 4B 6E
a.disjunction. c.binary fission.
b.interphase. d.cytokinesis.
5.For each set of terms, write one or more
sentences summarizing information
learned in this chapter.
a.haploid, diploid, gametes, zygote
b.autosome, sex chromosome, karyotype
c.XX chromosomes, XY chromosomesUnderstanding Key Ideas
6.In humans, females have _______ sex
chromosomes. 4B
a.XY c.YY
b.XX d.XO
7.The diagram below represents a(n) _______
mutation. 6C
a.deletion c.inversion
b.translocation d.duplication8.When the cell cycle is not controlled,
_______ may result. 4B
a.Down syndrome
b.binary fission
c.cancer
d.a spindle
9.As a result of mitosis, each resulting cell
a.receives an exact copy of all of the chro-
mosomes present in the original cell.
b.receives most of the chromosomes from
the original cell.
c.donates a chromosome to the original
cell.
d.receives exactly half the chromosomes
from the original cell.
10.During the metaphase stage of mitosis,
a.the cell membrane folds inward.
b.chromosomes line up at the cell’s equator.
c.spindle fibers shorten, pulling chromo-
somes to the poles of the cell.
d.chromosomes are at opposite ends of
the cell.
11.How does cell division differ between
animal and plant cells? 4B 6E
a.Plant cells do not have centrioles.
b.Animal cells form a cell plate.
c.Plant cells are always haploid.
d.Animal cells do not have centrioles.
12.Summarize how normal cells can become
cancer cells. 6C
13.List five organelles that must divide or
fragment before the cytoplasm divides.
(Hint:See Chapter 3, Section 2.) 4B 6E- How did researchers narrow
the search for genes involved in DiGeorge
syndrome to 15 genes? 6C - Concept Mapping Make a concept
map that shows the events in the cell cycle.
Try to include the following words in your
map: cell cycle, interphase, synthesis phase,
chromosomes, cytokinesis, mitosis, second
growth phase, and first growth phase. 3E
Original chromosome122341123 455
? mutation4B 6E
6E4B 6E