Biology (Mader), 10th Edition

Chapter 9: The Cell Cycle and Cellular Reproduction

Post-Test

1
Cell division in unicellular organisms results in ____ individuals.
A)4
B)2
C)1
D)8
2
Which best describes prokaryotes?
A)Unicellular bacteria
B)Prominent nucleus
C)Many chloroplasts
D)All of these
3
Chromosomes are composed of _____.
A)DNA only
B)proteins only
C)DNA and proteins
4
Prokaryotes primarily reproduce _____.
A)by binary fission
B)sexually
C)via meiosis
5
If a cell with 46 chromosomes undergoes mitosis, the daughter cells will have _____ chromosomes.
A)23
B)46
C)92
6
The region where sister chromatids are attached to one another is called the _____.
A)centromere
B)spindle
C)aster
D)centriole
7
The _____ most likely provide(s) the material for spindle formation.
A)nucleus
B)cytoskeleton
C)sister chromatids
D)plasma membrane
8
Which of the following is NOT associated with prophase?
A)Fragmentation of the nuclear envelope
B)Disappearance of the nucleolus
C)Separation of the sister chromatids
D)Visible chromosomes
9
After _____ nuclear division is completed.
A)prophase
B)metaphase
C)telophase
D)interphase
10
Alignment of the chromosomes at the equator of the spindle is characteristic of _____.
A)metaphase
B)prophase
C)anaphase
D)telophase
11
Mistakes in the process of mitosis may result in _______.
A)the duplication of chromosomes in cells
B)the partial distribution of chromosomes
C)the destruction of surrounding cells
D)All of these
12
The DNA is replicating during the ________ stage of the cell cycle.
A)mitotic
B)G1
C)G2
D)S
13
New methods of cancer treatment prevent _____, which cuts off the supply of nutrients and oxygen to the tumor.
A)metastasis
B)angiogenesis
C)differentiation
D)anaplasia
14
A disorganized, generally encapsulated mass that does not invade adjacent tissue is known as a _____.
A)neoplasia
B)benign tumor
C)anaplasia
15
Interphase consists of the __________ stages of cellular growth and division.
A)G1, G2 and M
B)G1, S and G2
C)M, S, and G2
D)M, S and G1
16
The p53 protein _____.
A)inhibits repair enzymes
B)stops the cell cycle during repair
C)inhibits apoptosis
D)All of the above
17
Programmed cell death is known as _____.
A)mitosis
B)cytokinesis
C)apoptosis
18
When most cancers occur, _____ is absent or nonfunctional.
A)the p53 gene
B)survivin
C)angiogenesis
19
If the diploid number of an organism is 30, the haploid number of the gametes is ___________.
A)30
B)60
C)15
D)10
20
When mutations occur in proto-oncogenes, they become cancer causing agents called ______.
A)tumor suppressor genes
B)oncogenes
C)stem cells
D)haploid cells
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