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Test Bank for MGMT 12, Principles of Management 12th Edition By Chuck Williams
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Test Bank for MGMT 12, Principles of Management12th Edition By Chuck Williams
1) In eukaryotic cells, chromosomes are composed of _____.
A) DNA and RNA
B) DNA only
C) DNA and proteins
D) DNA and phospholipids - ANSWER C) DNA and proteins
2) What is the final result of mitosis in a human?
A) genetically identical 2n somatic cells
B) genetically different 2n somatic cells
C) genetically identical 1n somatic cells
D) genetically identical 2n gamete cells - ANSWER A) genetically identical 2n
somatic cells
3) Starting with a fertilized egg (zygote), a series of five cell divisions would produce
an early embryo with how many cells?
A) 8
B) 16
c) 32
D) 64 - ANSWER c) 32
4) If there are 20 duplicated chromosomes in a cell, how many centromeres are
there?
A) 10
B) 20
C) 30
D) 40 - ANSWER B) 20
5) Scientists isolate cells in various phases of the cell cycle. They find a group of
cells that have 1 1/2 times more DNA than G1 phase cells. The cells of this group
are _____.
A) between the G1 and S phases in the cell cycle
B) in the G2 phase of the cell cycle
C) in the M phase of the cell cycle
D) in the S phase of the cell cycle - ANSWER D) in the S phase of the cell cycle
6) The first gap in the cell cycle (G1) corresponds to _____.
A) normal growth and cell function
B) the phase in which DNA is being replicated
C) the beginning of mitosis
D) the phase between DNA replication and the M phase - ANSWER A) normal
growth and cell function
7) The microtubule-organizing center found in animal cells is an identifiable structure
present during all phases of the cell cycle. Specifically, it is known as the _____.
A) microtubulere
, B) centrosome
C) centromere
D) kinetochore - ANSWER B) centrosome
8) In human and many other eukaryotic species' cells, the nuclear membrane has to
disappear to permit _____.
A) cytokinesis
B) the attachment of microtubules to kinetochores
C) the splitting of the centrosomes
D) the disassembly of the nucleolus - ANSWER B) the attachment of microtubules
to kinetochores
9) The mitotic spindle is a microtubular structure that is involved in _____.
A) splitting of the cell (cytokinesis) following mitosis
B) triggering the compaction and condensation of chromosomes
C) dissolving the nuclear membrane
D) separation of sister chromatids - ANSWER D) separation of sister chromatids
10) Metaphase is characterized by _____.
A) aligning of chromosomes on the equator
B) splitting of the centromeres
C) cytokinesis
D) separation of sister chromatids - ANSWER A) aligning of chromosomes on the
equator
11) Kinetochore microtubules assist in the process of splitting centromeres by
_____.
A) using motor proteins to split the centromere at specific arginine residues
B) creating tension by pulling toward opposite poles
C) sliding past each other like actin filaments
D) phosphorylating the centromere, thereby changing its conformation - ANSWER
B) creating tension by pulling toward opposite poles
12) Some cells have several nuclei per cell. How could such multinucleated cells be
explained?
A) The cell underwent repeated cytokinesis but no mitosis.
B) The cell underwent repeated mitosis with simultaneous cytokinesis.
C) The cell underwent repeated mitosis, but cytokinesis did not occur.
D) The cell had multiple S phases before it entered mitosis. - ANSWER C) The cell
underwent repeated mitosis, but cytokinesis did not occur.
13) How is plant cell cytokinesis different from animal cell cytokinesis?
A) The contractile filaments found in plant cells are structures composed of
carbohydrates; the cleavage furrow in animal cells is composed of contractile
phospholipids.
B) Plant cells deposit vesicles containing cell-wall building blocks on the metaphase
plate; animal cells form a cleavage furrow.
C) The structural proteins of plant cells separate the two cells; in animal cells, a cell
membrane separates the two daughter cells.
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