Show:
Cell Growth, Division, and Reproduction
Mitosis
and
The Phases
Cytokinesis
Cell Division
Mystery
100
The rate at which materials enter and leave the cell depends on the cell's ______________.
surface area.
100
Genetic information is bundled into packages of DNA known as _________________.
chromosomes
100
What is the main event during Cytokinesis?
The division of the cytoplasm itself.
100
The cell cycle is composed of these three processes.
Activity, Growth, and Division.
100
Sister chromatids are attached to each other at an area called the ____________.
The Centromere
200
Mitosis is a form of _____________________.
Asexual Reproduction.
200
What is the shortest phase of Mitosis?
Metaphase
200
True or False: Cytokinesis is the process that takes the longest during the Cell Cycle. (If the answer is false, what is the correct answer?)
False; Interphase.
200
The chromosomes in eukaryotic cells form a close association with histones, a type of protein. The complex of chromosome and protein is referred to as ____________.
chromatin
200
What phase of the cell cycle lasts the longest?
Interphase
300
In order for a cell to divide successfully, the cell must first _______________.
duplicate its genetic information
300
What are the four phases of mitosis in order?
Prophase, Metaphase, Anaphase, Telophase
300
Cytokinesis usually occurs at the same time as _________.
Telophase
300
A protein called _________ regulates the cell cycle.
cyclin
300
In eukaryotes, cell division occurs in two main stages. The first state of the process, division of the cell nucleus, is called _________________.
mitosis
400
Cell division solves the problem of ____________ and the problem of _______________.
information overload; increasing size by reducing cell volume
400
True or False: During mitosis in a plant cell, spindle fibers from the centromere extend to the centrioles at opposite ends of the cell.
False; Only animal cells have centrioles.
400
In most animal cells, the cell membrane is drawn inward until the ____________ is pinched into two nearly equal parts. Each part contains its own ____________ and __________.
cytoplasm; nucleus and cytoplasmic organelles.
400
What are three things that happen during the cell cycle?
A cell grows, prepares for division, and divides into two daughter cells.
400
The phase in which the chromosomes lineup at the center of the cell is called ___________.
Metaphase
500
Why does a cell have to eventually stop growing and split?
A cell has to eventually stop forming and split because a cell that continues to grow would have difficulties in getting sufficient amounts of oxygen and nutrients in and waste products out. (Town Analogy: Suppose the town has just a two-lane main street leading to the center of town. As the town grows, more and more traffic clogs the main street. It becomes increasingly difficult to move goods in and out.)
500
Draw and name the phase in which the chromosomes separate and move along spindle fibers to opposite ends of the cell in a Eukaryotic cell.
Anaphase http://www.macroevolution.net/images/anaphase-249-168-8.jpg
500
In plant cells, the cell membrane is not flexible enough to draw inward because of the rigid cell wall that surrounds it. Instead a structure, _________, forms halfway between the divided nuclei. It gradually develops into _______, that separate the two daughter cells.
cell plate; cell membrane
500
The process of cell division in prokaryotes is a form of asexual reproduction known as _______________.
binary fission
500
____________ are caused by the defects in the genes that regular cell growth and division.
Cancer