Questão 1
Questão
As a cell becomes larger, its
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surface area increases faster than its volume
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surface area stays the same, but its volume increases
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volume increases faster than its surface area
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volume increases, but its surface area stays the same
Questão 2
Questão
If the surface area of a cell that is shaped like a cube increases 100 times, its volume increases about
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1000 times
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10 times
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5 times
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100 times
Questão 3
Questão
All of the following are problems that growth causes for cells EXCEPT
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more demands on DNA
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expelling wastes
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excess oxygen
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obtaining enough food
Questão 4
Questão
Compared to small cells, large cells have more trouble
Questão 5
Questão
After cell division, each daughter cell has
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a lower surface area/volume ratio than the parent cell
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a higher surface area/volume ratio than the parent cell
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less DNA in its nucleus than the parent cell
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more DNA in its nucleus than the parent cell
Questão 6
Questão
A multicellular organism begins life as a single cell—a fertilized egg with a complete set of chromosomes. The picture in Figure 10–2 above shows how the cell divides to become two cells, then four cells, eight cells, and so on. Which of the following statements best describes what happens during this process?
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Chromosomes are divided evenly during cell division so that each new daughter cell has an equal share of the original set.
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Chromosomes are randomly distributed during cell division so that some new cells have partial sets while others have complete sets.
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Chromosomes are duplicated before cell division so that each new daughter cell has a complete set.
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Chromosomes are stored in the original cell to direct the division of all daughter cells, which do not have their own chromosomes.
Questão 7
Questão
Which pair includes a phase of the cell cycle and a cellular process that occurs during that phase?
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M phase, cell growth
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G1 phase, DNA replication
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S phase, cell division
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G2 phase, preparation for mitosis
Questão 8
Questão
When during the cell cycle is a cell’s DNA replicated?
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S phase
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G1 phase
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M phase
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G2 phase
Questão 9
Questão
In Figure 10–4, what role does structure A play in mitosis?
Questão 10
Questão
The structure labeled A in Figure 10–5 is called the
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spindle
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centriole
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centromere
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sister chromatid
Questão 11
Questão
The structures labeled B in Figure 10–5 are called
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sister chromatids
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centromeres
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spindles
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centrioles
Questão 12
Questão
During which phase(s) of mitosis are structures like the one shown in Figure 10–5 visible?
Questão 13
Questão
One difference between cell division in plant cells and in animal cells is that plant cells have
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chromatin
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a cell plate
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centromeres
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centrioles
Questão 14
Questão
The process by which a cell divides into two daughter cells is called
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mitosis
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metaphase
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cell division
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interphase
Questão 15
Questão
An advantage of sexual reproduction over asexual reproduction is that sexual reproduction
Questão 16
Questão
Which of the following is a correct statement about the events of the cell cycle?
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DNA replicates during cytokinesis.
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The M phase is usually the longest phase.
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Interphase consists of the G1, S, and G2 phases.
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Little happens during the G1 and G2 phases.
Questão 17
Questão
Cell division is represented in Figure 10–3 by the letter
Questão 18
Questão
First phase of mitosis is called
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Metaphase
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Prophase
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Anaphase
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Telophase
Questão 19
Questão
During which phase of mitosis do the chromosomes line up along the middle of the dividing cell?
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Metaphase
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Prophase
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Anaphase
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Telophase
Questão 20
Questão
Which of the following represents the phases of mitosis in their proper sequence?
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prophase, metaphase, anaphase, telophase
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interphase, prophase, metaphase, anaphase, telophase
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prophase, anaphase, metaphase, telophase
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interphase, prophase, metaphase, telophase
Questão 21
Questão
What is the role of the spindle fibers during mitosis?
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They duplicate the DNA.
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They make the chromosomes visible.
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They break down the nuclear membrane.
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They help separate the chromosomes.
Questão 22
Questão
The two main stages of cell division are called
Questão 23
Questão
During normal mitotic cell division, a parent cell that has four chromosomes will produce two daughter cells, each containing
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16 chromosomes
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8 chromosomes
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4 chromosomes
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2 chromosomes
Questão 24
Questão
Which of the following explains why body cells would undergo mitotic cell division?
Questão 25
Questão
The structure shown in Figure 10–5 is a replicated chromosome.
Questão 26
Questão
The smaller a cell is, the more difficult it is for the cell to move enough nutrients and wastes across its cell membrane to maintain its normal functions.
Questão 27
Questão
In eukarotes, the spindle breaks down during prophase and re-forms during telophase.
Questão 28
Questão
Typically, the longest phase of mitosis is anaphase.
Questão 29
Questão
The cell shown in step E in Figure 10-7 above is undergoing telophase.
Questão 30
Questão
The number of sister chromatids in a human body cell that is entering cell division is [blank_start]____________________[blank_end].
Questão 31
Questão
A cell that has 5 chromosomes in the G1 phase will have [blank_start]10[blank_end] chromatids in the G2 phase.
Questão 32
Questão
The structure labeled A in Figure 10–8 is called the [blank_start]_________________________[blank_end].
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Cell Plate
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Centromere
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Spindle Fiber
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Centriole