Campbell Biology Chapter 12 Test Bank
1) Eukaryotic chromosomes are composed of which of the following macromolecules? - ANS C)
DNA and proteins
2) Starting with a fertilized egg (zygote), a series of six cell divisions would produce an early
embryo with how many cells? - ANS D) 64
3) In a diploid cell with 5 chromosome pairs (2n = 10), how many centromeres will be found in a
nucleus at G2 of the cell division cycle? - ANS B) 10
5) G1 is associated with which of the following cellular events? - ANS A) normal growth and cell
function
9) Metaphase is characterized by ________. - ANS A) alignment of chromosomes on the
equator of the cell
13) FtsZ is a bacterial cytoskeletal protein that forms a contractile ring involved in binary fission.
Its function is analogous to ________. - ANS A) the cleavage furrow of eukaryotic animal cells
15) In a diploid cell with 5 chromosome pairs (2n = 10), how many sister chromatids will be
found in a nucleus at prophase of mitosis? - ANS C) 20
16) If there are 40 centromeres in a cell at anaphase of mitosis, how many chromosomes will be
found in each daughter cell following cytokinesis? - ANS B) 20
17) If a cell at metaphase of mitosis contains 20 sister chromatids, how many chromosomes will
be present in a G1 cell? - ANS B) 10
19) Movement of the chromosomes during anaphase would be most affected by a drug that
prevents which of the following events in mitosis and cell division? - ANS C) shortening of
microtubules
20) Measurements of the amount of DNA per nucleus were taken on a large number of cells
from a growing fungus. The measured DNA levels ranged from 3 to 6 picograms per nucleus. In
which stage of the cell cycle did the nucleus contain 6 picograms of DNA? - ANS C) G2
21) A group of cells is assayed for DNA content immediately following mitosis and is found to
have an average of 8 picograms of DNA per nucleus. How many picograms of DNA would be
found in a nucleus at prophase of mitosis? - ANS C) 16
1) Eukaryotic chromosomes are composed of which of the following macromolecules? - ANS C)
DNA and proteins
2) Starting with a fertilized egg (zygote), a series of six cell divisions would produce an early
embryo with how many cells? - ANS D) 64
3) In a diploid cell with 5 chromosome pairs (2n = 10), how many centromeres will be found in a
nucleus at G2 of the cell division cycle? - ANS B) 10
5) G1 is associated with which of the following cellular events? - ANS A) normal growth and cell
function
9) Metaphase is characterized by ________. - ANS A) alignment of chromosomes on the
equator of the cell
13) FtsZ is a bacterial cytoskeletal protein that forms a contractile ring involved in binary fission.
Its function is analogous to ________. - ANS A) the cleavage furrow of eukaryotic animal cells
15) In a diploid cell with 5 chromosome pairs (2n = 10), how many sister chromatids will be
found in a nucleus at prophase of mitosis? - ANS C) 20
16) If there are 40 centromeres in a cell at anaphase of mitosis, how many chromosomes will be
found in each daughter cell following cytokinesis? - ANS B) 20
17) If a cell at metaphase of mitosis contains 20 sister chromatids, how many chromosomes will
be present in a G1 cell? - ANS B) 10
19) Movement of the chromosomes during anaphase would be most affected by a drug that
prevents which of the following events in mitosis and cell division? - ANS C) shortening of
microtubules
20) Measurements of the amount of DNA per nucleus were taken on a large number of cells
from a growing fungus. The measured DNA levels ranged from 3 to 6 picograms per nucleus. In
which stage of the cell cycle did the nucleus contain 6 picograms of DNA? - ANS C) G2
21) A group of cells is assayed for DNA content immediately following mitosis and is found to
have an average of 8 picograms of DNA per nucleus. How many picograms of DNA would be
found in a nucleus at prophase of mitosis? - ANS C) 16
