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