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Chapter 8 Review 2
Test Description: Review 2 for chapter 8
Instructions: Answer all questions to get your test result.
1) Prokaryotic chromosomes
A
comprise at least two chromosomes
B
are made of DNA wrapped tightly around histone proteins
C
include histone and nonhistone proteins
D
consist of a circular DNA molecule
2) Chromatin is
A
one of two identical parts that make up a chromosome
B
the point at which each pair of chromatids is joined
C
a dark stain
D
a substance within the nuclear membrane of a nondividing cell
3) Every species has
A
haploid gametes
B
at least eight chromosomes per cell
C
a number of chromosomes that varies with the coplexity of the organism
D
a distinctive number of chromosomes per cell
4) Binary fission is
A
sexual reproduction of prokaryotes
B
the nuclear division of cells
C
eukaryotic cell division
D
prokaryotic cell division
5) Mitosis
A
is never triggered by cell size
B
is a means of reproducing sexually
C
can increase the number of body cells without changing the information contained in the DNA of those cells
D
results in offspring cells that are genetically different from the original cell
6) Interphase is
A
a small part of the life cycle of the cell
B
a time of cell growth and development
C
the time between meiosis I and meiosis II
D
composed of G1, G2, and G3
7) Cytokinesis
A
immediately precedes mitosis
B
differs in animal and plant cells
C
does not occur in plant cells
D
is a process of nuclear division
8) Oogenesis
A
produces diploid cells
B
produces four egg cells
C
requires meiotic cell divisions
D
produces one diploid cell and three polar bodies
9) Crossing over occurs during
A
meiosis I
B
interphase
C
mitosis
D
meiosis II
10) During cell division, the DNA in a eukaryotic cell is tightly packed and coiled into structures called
A
haploids
B
chromosomes
C
centromeres
D
histones
11) There are ______ autosomes in all human cells except sperm and egg cells.
A
4
B
42
C
2
D
44
12) The fibers that extend from centrosome to centrosome during mitosis are
A
binary fibers
B
kinetochore fibers
C
polar fibers
D
spindle fibers
13) Cells can exit from the cell cycle and enter the
A
S phase
B
G1 phase
C
G0 phase
D
M phase
14) Portions of chromatids break off and attach to adjacent chromatids on the homologous chromosome during
A
independent assortment
B
Oogenesis
C
crossing-over
D
anaphase
15) What is the correct order of a cell's life cycle?
A
G0, S, G1, Prophase, Metaphase, Anaphase, Telophase
B
G0, S, G1, Metaphase, Prophase, Anaphase, Telophase
C
G1, S, G2, Prophase, Metaphase, Anaphase, Telophase
D
G1, S, G2, Metaphase, Prophase, Anaphase, Telophase
16) A reproductive cell is called a
A
polar body
B
gamete
C
tetrad
D
autosome
17) Photos of an individual's chromosomes can be taken an arranged to make a
A
adder's tongue
B
karyotype
C
kinetochore
D
chomatid
18) A _____________ holds the two sister chromatids of a chromosome together.
A
centriole
B
centromere
C
polar body
D
centrosome
19) Chromosomes line up along the equator of the dividing cell during
A
telophase
B
G2 phase
C
metaphase
D
prophase
20) During anaphase
A
spindle fibers disassemble
B
chromosomes line up on the equator
C
the nucleus reforms around the genetic material
D
chromosomes move toward opposite poles
*select an answer for all questions
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