1 Biology Chapter 10 Test
The process shown in Figure 10-8 occurs only in ____________________ cells that are going through cytokinesis.
plant
The first phase of mitosis is called
prophase
Which of the following represents the phases of mitosis in their proper sequence?
prophase, metaphase, anaphase, telophase
During which phase(s) of mitosis are structures like the one shown in Figure 10-5 visible?
prophase, metaphase, and anaphase
An advantage of sexual reproduction over asexual reproduction is that sexual reproduction
provides genetic diversity
The structure labeled A in Figure 10-5 is called the
centromere.
Which of the following is a possible future benefit of stem cell research?
reversing damage from a heart attack
In eukarotes, the spindle breaks down during prophase and re-forms during telophase.
false
Most of a cell's growth takes place during the G2 phase of the cell cycle.
false
Nerve cells are cells that have not yet undergone differentiation.
false
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.
false
During normal mitotic cell division, a parent cell that has four chromosomes will produce two daughter cells, each containing
four chromosomes.
Which of the following are external regulators of the cell cycle?
growth factors
The structures labeled B in Figure 10-5 are called
sister chromatids.
During which phase of mitosis do the chromosomes line up along the middle of the dividing cell?
metaphase
The phase of mitosis shown in step C in the Figure 10-7 above is called ____________________.
metaphase
Which of the following is a correct statement about the events of the cell cycle?
Interphase consists of the G1, S, and G2 phases.
During which phase in the cell cycle does mitosis happen?
M phase
Some cells form a cell plate during cytokinesis. Which of the following is true of the cells in Figure 10-6 above?
Only cell B forms a cell plate during cytokinesis.
The process by which a cell divides into two daughter cells is called
cell division
One difference between cell division in plant cells and in animal cells is that plant cells have
a cell plate
The two main stages of cell division are called
mitosis and cytokinesis
During normal development, the cells between toes and fingers die by ____________________, a process of programmed cell death.
apoptosis
When during the cell cycle are chromosomes visible?
only during cell division
During cytokinesis, a cell undergoing cell division finally splits into two daughter cells.
true
Proteins called cyclins help regulate the cell cycle.
true
The cell shown in step E in Figure 10-7 above is undergoing telophase.
true
The structure shown in Figure 10-5 is a replicated chromosome.
true
Cancer cells form masses of cells called
tumors
The rate at which wastes are produced by a cell partially depends on the cell's
volume
The larger a cell becomes, the ____________________ efficiently it is able to function.
less
Stem cells taken from embryos are totipotent.
False; pluripotent
A cell that has 5 chromosomes in the G1 phase will have ____________________ chromatids in the G2 phase.
10
If the surface area of a cell that is shaped like a cube increases 100 times, its volume increases about
1000 times
What is the chromosome number of the cell shown in Figure 10-10?
4
The number of sister chromatids in a human body cell that is entering cell division is ____________________.
92
Which of the following explains why normal cells grown in a petri dish tend to stop growing once they have covered the bottom of the dish?
Contact with other cells stops cell growth.
Cell division is represented in Figure 10-3 by the letter
D
List the correct order for the diagrams in Figure 10-10.
D,A,C,B
Which of the following happens when a cell divides?
Each daughter cell receives its own copy of the parent cell's DNA.
What does Figure 10-10 represent? How do you know if this is an animal cell or a plant cell?
Figure 10-10 represents m phase in the stages of prophase,metaphase, anaphase, and telophase. This is an animal cell because of the shape of the cell that is more round. Also during telophase which is letter B there is no cell plate forming. It is not a plant cell because a plant cell has a more rigid shape.
Which pair includes a phase of the cell cycle and a cellular process that occurs during that phase?
G2 phase, preparation for mitosis
When during the cell cycle is a cell's DNA replicated?
S phase
Why are stem cells important?
They have the potential to develop into other cell types.
What is the role of the spindle fibers during mitosis?
They help separate the chromosomes.
In Figure 10-4, what role does structure A play in mitosis?
connect to spindle fibers
In eukaryotic cells, the timing of the cell cycle is regulated by
cyclins
Adult skin cells can no longer become other types of cells because they have already undergone _________________________.
differentiation
During early development, all cells in the embryo of a multicellular organism are identical. Later on in development, the cells will become specialized through a process called
differentiation.
Together, the G1 phase, S phase, and G2 phase are called ____________________.
interphase
A cell with a defective p53 gene is likely to
stop responding to growth regulators.
Identify the structures labeled X and Y in Figure 10-10.
x: centrioles, y:spindle fibers
