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Multiple Choice Quiz
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1
Cell division in unicellular organisms produces two new individuals.
A)True
B)False
2
Asexual reproduction results in offspring that are genetically different from the parent.
A)True
B)False
3
Cell division in multicellular organisms is important for _____.
A)growth
B)repair
C)both A and B
4
All cells divide continuously throughout the life of a multicellular organism.
A)True
B)False
5
Which best describes prokaryotes?
A)unicellular bacteria
B)prominent nucleus
C)many chloroplasts
D)all of the above
6
Prokaryotes' chromosomes are identical to those of eukaryotes.
A)True
B)False
7
Chromosomes are composed of _____.
A)DNA only
B)proteins only
C)DNA and proteins
8
Prokaryotes' DNA is found in the _____.
A)nucleoid
B)nucleolus
C)nucleus
9
Prokaryotes have a single chromosome.
A)True
B)False
10
Prokaryotes reproduce _____.
A)by binary fission
B)sexually
C)very slowly
11
Some bacteria reproduce in less than 20 minutes.
A)True
B)False
12
Which process ensures that each newly formed cell gets its own copy of the DNA?
A)transcription
B)replication
C)cytokinesis
13
The diploid number of chromosomes in humans is _____.
A)1
B)20
C)46
D)78
14
In a eukaryotic cell that is NOT undergoing division, the tangled mass of DNA and its associated proteins is known as _____.
A)sister chromatids
B)centromeres
C)chromatin
D)histones
15
The division of cytoplasm is called _____.
A)replication
B)karyokinesis
C)binary fission
D)cytokinesis
16
If a cell with 46 chromosomes undergoes mitosis, the daughter cells will have _____ chromosomes.
A)23
B)46
C)92
17
In many animals, only _____ are haploid cells.
A)eggs
B)sperm
C)both A and B
18
Sister chromatids are genetically identical to each other.
A)True
B)False
19
The region where sister chromatids are attached to one another is called the _____.
A)centromere
B)spindle
C)aster
D)centriole
20
Each species has a characteristic number of chromosomes.
A)True
B)False
21
During prophase, it is apparent that nuclear division is about to occur because _____.
A)the chromatin has condensed
B)the chromosomes are visible structures
C)both A and B
22
The _____ most likely provide(s) the material for spindle formation.
A)nucleus
B)cytoskeleton
C)sister chromatids
D)plasma membrane
23
Which of the following distinguishes an animal cell from a plant cell
A)centrioles
B)spindle
C)asters
D)both A and C
24
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
25
The first phase of nuclear division is called _____.
A)telophase
B)metaphase
C)prophase
D)interphase
26
After _____ nuclear division is completed.
A)prophase
B)metaphase
C)telophase
D)interphase
27
Alignment of the chromosomes at the equator of the spindle is characteristic of _____.
A)metaphase
B)prophase
C)anaphase
D)telophase
28
The nuclear envelopes re-form, chromosomes unwind back into chromatin, nucleoli reappear, and the spindle disappears during _____.
A)prophase
B)telophase
C)metaphase
D)anaphase
29
During __________, the chromosomes attach to the spindle and begin to align at the metaphase plate of the spindle.
A)telophase
B)prometaphase
C)anaphase
D)prophase
30
The sister chromatids separate from each other during _____.
A)prophase
B)telophase
C)anaphase
D)metaphase
31
The spindle begins to assemble during _____.
A)prophase
B)prometaphase
C)metaphase
D)anaphase
32
Cytokinesis in plant cells occurs by the same process as in animal cells.
A)True
B)False
33
Meristem tissue is found in the __________ of a plant.
A)root tips
B)shoot tips
C)stems
D)all of the above
34
In plant cells, the vesicles which move along microtubules to the midpoint between the two daughter nuclei fuse to form a cell __________.
A)membrane
B)plate
C)wall
35
Except for the absence of centrioles and asters, mitosis in plant cells occurs as it does in animal cells.
A)True
B)False
36
Daughter cells as a result of mitosis have a complete copy of _____.
A)chromosomes
B)genes
C)both A and B
37
The separation of the two daughter cells during animal cell division begins when the _____ forms.
A)cell wall
B)spindle
C)cleavage furrow
D)cell plate
38
The period of DNA replication in the cell cycle is called the _____.
A)M stage
B)G1 stage
C)S stage
D)G2 stage
39
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
40
Cardiac muscle cells do not undergo mitosis so damage done by a heart attack cannot be repaired.
A)True
B)False
41
Movement of a cell through the various stages of the cell cycle appears to be controlled by _____.
A)kinase
B)growth factors
C)cyclins
D)all of the above
42
The cell grows in size and the number of cellular organelles increases during the _____ stage of the cell cycle.
A)G1
B)S
C)G2
D)M
43
The length of the different stages of the cell cycle _____.
A)varies among species
B)varies among different cells in the same individual
C)both A and B
44
Cells move from the G1 phase to the S phase when S-kinase binds to S-cyclin.
A)True
B)False
45
When most cancers occur, _____ is absent or nonfunctional.
A)the p53 gene
B)survivin
C)angiogenesis
46
Which of the following is/are (a) mutagenic carcinogen(s)?
A)radiation
B)tobacco smoke
C)viruses
D)all of the above
47
Many different types of human cancers contain no or a faulty p53 gene.
A)True
B)False
48
Programmed cell death is known as _____.
A)mitosis
B)cytokinesis
C)apoptosis
49
The p53 protein _____.
A)inhibits repair enzymes
B)stops the cell cycle during repair
C)inhibits apoptosis
D)all of the above
50
Which of the following characteristics is displayed by cancer cells?
A)contact inhibition
B)normal looking nuclei
C)specialization
D)chromosome mutations
51
A disorganized, generally encapsulated mass that does not invade adjacent tissue is known as a _____.
A)neoplasia
B)benign tumor
C)anaplasia
52
Colon cancer may be prevented by _____.
A)smoking
B)high-fiber diets
C)alcohol consumption
D)hormone therapy
53
Almost all skin cancers are related to sun exposure.
A)True
B)False
54
Cancer cells can travel through the circulatory or lymphatic systems and start tumors throughout the body.
A)True
B)False
55
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
56
About 87% of all lung cancer cases are related to _____.
A)radon exposure
B)asbestos exposure
C)smoking
D)alcohol consumption
57
Fresh fruits and vegetables in the cabbage family have been shown to be especially protective against cancer development.
A)True
B)False







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