Chapter 8 Review 2: Question Preview (ID: 23092)


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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
Chromatin is
a) a dark stain b) a substance within the nuclear membrane of a nondividing cell c) one of two identical parts that make up a chromosome d) the point at which each pair of chromatids is joined
Every species has
a) haploid gametes b) a distinctive number of chromosomes per cell c) at least eight chromosomes per cell d) a number of chromosomes that varies with the coplexity of the organism
Binary fission is
a) the nuclear division of cells b) eukaryotic cell division c) sexual reproduction of prokaryotes d) prokaryotic cell division
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) is never triggered by cell size d) results in offspring cells that are genetically different from the original cell
Interphase is
a) composed of G1, G2, and G3 b) the time between meiosis I and meiosis II c) a small part of the life cycle of the cell d) a time of cell growth and development
Cytokinesis
a) differs in animal and plant cells b) does not occur in plant cells c) immediately precedes mitosis d) is a process of nuclear division
Oogenesis
a) produces diploid cells b) requires meiotic cell divisions c) produces four egg cells d) produces one diploid cell and three polar bodies
Crossing over occurs during
a) mitosis b) interphase c) meiosis I d) meiosis II
During cell division, the DNA in a eukaryotic cell is tightly packed and coiled into structures called
a) centromeres b) histones c) haploids d) chromosomes
There are ______ autosomes in all human cells except sperm and egg cells.
a) 2 b) 4 c) 42 d) 44
The fibers that extend from centrosome to centrosome during mitosis are
a) polar fibers b) spindle fibers c) kinetochore fibers d) binary fibers
Cells can exit from the cell cycle and enter the
a) G1 phase b) S phase c) M phase d) G0 phase
Portions of chromatids break off and attach to adjacent chromatids on the homologous chromosome during
a) Oogenesis b) crossing-over c) independent assortment d) anaphase
What is the correct order of a cell's life cycle?
a) G0, S, G1, Metaphase, Prophase, Anaphase, Telophase b) G0, S, G1, Prophase, Metaphase, Anaphase, Telophase c) G1, S, G2, Metaphase, Prophase, Anaphase, Telophase d) G1, S, G2, Prophase, Metaphase, Anaphase, Telophase
A reproductive cell is called a
a) autosome b) gamete c) tetrad d) polar body
Photos of an individual's chromosomes can be taken an arranged to make a
a) karyotype b) kinetochore c) chomatid d) adder's tongue
A _____________ holds the two sister chromatids of a chromosome together.
a) centrosome b) centriole c) centromere d) polar body
Chromosomes line up along the equator of the dividing cell during
a) prophase b) G2 phase c) metaphase d) telophase
During anaphase
a) chromosomes line up on the equator b) spindle fibers disassemble c) chromosomes move toward opposite poles d) the nucleus reforms around the genetic material
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