As a cell becomes larger, its
volume increases faster than its surface area.
As a cell grows, it
places more demands on its DNA.
uses up food and oxygen more quickly.
has more trouble moving enough materials across its cell membrane.
all of the above
If the length of a cell increases 10 times, its volume increases about(hint:calculate the volume of a cell that is 1cm and compare it to the volume of a cell that is 10 cm)
1000 times.
Unlike small cells, large cells have more trouble
moving needed materials in and waste products out.
The process by which a cell divides into two daughter cells is called
cell division.
Which of the following is NOT a way that cell division solves the problems of cell growth?
Cell division increases the mass of the original cell.
Which of the following happens when a cell divides?
Each daughter cell receives its own copy of the parent cell's DNA.
When during the cell cycle are chromosomes visible?
only during cell division
Which of the following is a phase in the cell cycle?
G1 phase
G2 phase
S phase
all of the above
Which pair is correct?
G2 phase, preparation for mitosis
When during the cell cycle is a cell's DNA replicated?
S phase
Which event occurs during interphase?
The cell grows.
Which of the following is a correct statement about the events of the cell cycle?
Interphase consists of the G1, S, and, G2 phases.
Which of the following is NOT a correct statement about the events of the cell cycle?
The cell grows during the G2 phase.
Cell division is represented in Figure 10-1 by the letter
D.
The cell cycle is the
series of events that cells go through as they grow and divide.
The structure labeled ? in Figure 10-2 is called the
centromere.
The structures labeled B in Figure 10-2 are called
sister chromatids.
During which phase(s) of mitosis are structures like the one shown in Figure 10-2 visible? (Chromosomes)
prophase and metaphase
The first phase of mitosis is called
prophase.
During which phase of mitosis do the chromosomes line up along the middle of the dividing cell?
metaphase
Which of the following represents the phases of mitosis in their proper sequence?
prophase, metaphase, anaphase, telophase
What is the role of the spindle during mitosis?
it helps separate the chromosomes.
The two main stages of cell division are called
cytokinesis and mitosis.
One difference between cell division in plant cells and in animal cells is that plant cells have
a cell plate.
During normal mitotic cell division, a parent cell having four chromosomes will produce two daughter cells, each containing
four chromosomes.
What happens when cells come into contact with other cells?
They stop growing and dividing.
Cells grown in a petri dish tend to divide until they form a thin layer covering the bottom of the dish. If
cells are removed from the middle of the dish, the cells bordering the open space will begin dividing until they have filled the empty space. What
When cells come into contact with other cells, they stop growing.
The controls on cell growth and division can be turned on and off.
Cell division can be regulated by factors outside the cell.
all of the above
When cytoplasm from a cell that is undergoing mitosis is injected into a cell that is in interphase, the second cell
enters mitosis.
In eukaryotic cells, the timing of the cell cycle is regulated by
cyclins.
Cancer is a disorder in which some cells have lost the ability to control their
cell cycle.
Cancer cells form masses of cells called
tumors.
Typically, the longest phase of mitosis is(hint: think of the phase that has the most going on):
prophase
Compare the number of cells that result from meiosis and mitosis.
Mitosis produces 2 daughter cells identical and meiosis produces 4 haploid cells totally different.
How does the genetic content of cells resulting from mitosis and meiosis differ.
Mitosis produces tow genetically identical diploid cells, whereas meiosis produces four genetically different haploid cells.
Mitosis Function Link
(copy & paste)
http://ocas.pearsonschool.com/ph/cd/0-13-115540-7/iText/products/0-13-115516-4/ch10/sb07437.html
Meiosis Functions Link
(copy & paste)
http://ocas.pearsonschool.com/ph/cd/0-13-115540-7/iText/products/0-13-115516-4/ch11/sb4066f1.html
tetrad
structure containing 4 chromatids that forms during meiosis
crossing-over
process in which homologous chromosomes exchange portions of their chromatids during meiosis
homologous
term used to refer to chromosomes that each have a corresponding chromosome from the opposite-sex parent
diploid
term used to refer to a cell that contains both sets of homologous chromosomes
haploid
term used to refer to a cell that contains only a single set of chromosomes and therefore only a single set of genes
What are the two main reasons why cells divide rather than continuing to grow indefinitely
The larger a cell becomes, the more demands the cell places on its DNA. In addition, the cell has more trouble moving enough nutrients and wastes across the cell membrane.
cell division
process by which a cell divides into two new daughter cells
mitosis
part of eukaryotic cell division during which the cell nucleus divides
cytokinesis
division of the cytoplasm during cell division
chromatid
one of two identical "sister" parts of a duplicated chromosome
centromere
area where the chromatids of a chromosome are attached
interphase
period of the cell cycle between cell divisions
prophase
first and longest phase of mitosis, during which the chromosomes become visible and the centrioles separate and take up positions on the opposite sides of the nucleus
centriole
one of two tiny structures located in the cytoplasm of animal cells near the nuclear envelope
spindle
fanlike microtubule structure that helps separate the chromosomes during mitosis
metaphase
second phase of mitosis, during which the chromosomes line up across the center of the cell
anaphase
the third phase of mitosis, during which the chromosome pairs separate and move toward opposite poles
telophase
fourth and final phase of mitosis, during which the chromosomes begin to disperse into a tangle of dense material