chapter 12 quiz Flashcards
a somatic ell having two of each type of chromosome has a(n) ____chromosome number
a:diploid
b:haploid
c:tetraploid
d:abnormal
diploid
if a parent cell has 16 chromosomes, how many sister chomatids will be present after duplication of the chromosomes
a:64
b:32
c:16
d:8
32
the spindle apparats is made of
a:golgi bodies
b:microtubles
c:endoplasmic reticulum
d:nucleoprotein
microtubules
the chromosomes are aligned at the spindle equator during
a:anaphase
b:metaphase
c:interphase
d:prophase
metaphase
mitosis and cytoplasmic division function in
a:asexual reproduction of single-celled eukaryotes
b:growth, tissue repair, often asexual reproduction
c:gamete formation in prokaryotes
d: both a and b
asexual reproduction of single celled eukaryotes, and growth tissue repair often asexual reproduction
which of the following is not associate with meiosis
a:spore formation
b:somatic cells
c:sexual reproduction
d:sperm and egg
somatic cells
a duplicated chromosome has _____ chromatids
a: one
b:two
c: three
d:four
two
dna replication occurs
a: between the gap phases of interphase
b:immediately before prophase of mitosis
c:during prophase of mitosis
d:during prophase of meiosis
between the gap phases of interphase
the basic unit that structurally organizes a eukaryotic chromosome is the
a:higher order coiling
b:nucleosome
c:micrdofilaments
d:bipolar mitotic spindle
nucleosome
chromosomes are duplicated during what portion of the cell cycle
a:M
b:G1
c:G2
d:S
S
In which of the stages below does each chromosome consist of two DNA molecules
I. metaphase
II. telophase
III: prophase
IV: anaphase
a. III and IV
b:I,III, and IV
c: I and III
d: I, II, and III
I and III
which of the following is the proper sequence for mitosis
I. metaphase
II. telophase
III: prophase
IV: anaphase
a:I, III,IV, II
b:I, II, III, IV
c: III, I, IV, II
d:IV, I, III, II
II, I, IV, II
which of the following are primarily responsible for cytokinesis in plant cells but not in animal cells
a:kinetochores
b:golgi-derived vesicles
c:actin and myosin
d:centrioles and centromeres
e:cyclin-dependent kinase
golgi derived vesicles
which of the following statements concerning cancer cells is most accurate
a: oncogenes are part of the regulatory section of a chromosome
b:tumor cells have lost their inhibition to stop dividing
c:oncogenes help control runaway cell division
d:benign tumors usually spread to other body parts
tumor cells have lost their inhibition to stop dividing
three of the four events listed below are related by a common phase of mitosis. select the exception
a: chromosome decondense
b:spindle microtubules disappear
c:nucleolus reappears
d:chromosomes separate
chromosomes separate
