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Biology Chapter 10

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spindle
meshlike structure that helps move the chromosomes apart
mitosis
process by which the cell nucleus is divided
prophase
first and longest phase of mitosis
volume
As a cell increases in size, which increases more rapidly
cell division
the process by which a cell divides into two new daughter cells is called____ ______
each new cell can exchange more material than the original cell
when 1 cell divides in 2, what happens to the surface area to volume ratios in the new cells?
a full copy of all the DNA of the original cell
when a growing cell undergoes cell division, each new cell gets ____
cell cycle
the series of events that cells go through as they grow & divide is called______
metaphase
the phase of mitosis during which the chromosomes line up across the center of the cell is _______
at the same time as telophase
cytokinesis usually occurs _______
S phase of the cell cycle
DNA replication takes place during the _______
surface area
the rate at which materials enter and leave through the cell membrane depends on the cell's______
2 daughter cells
the process of cell division results in______
centromere
sister chromatids are attached to each other at an area called the _____
12
if a cell has 12 chromosomes, how many chromosomes will each of its daughter cells have after mitosis?
chromatids
at the beginning of the cell division, a chromosome consists of two____
prophase
The phase of mitosis during which chromosomes become visible and the centrioles separate from_____
cyclins
the timing of the cell cycle in eukaryotic cells is believed to be controlled by a group of closely related proteins known as______
speed up or slow down cell cycle
in the cell cycle, external regulators direct cells to_______
cancer
uncontrolled cell division occurs in______
cytokinesis
the second stage, division of the cytoplasm
chromatids
each chromosomes consists of two identical "sister" ________
centromeres
located near the middle of the chromatids
cell cycle
the series of events that cells go through as they grow divide
centrioles
two tiny structures located in the cytoplasm near the nuclear envelope
Interphase
the cell grows and replicates its DNA and centrioles
Cytokinesis
the cytoplasm pinches in half. Each daughter cell has an identical set of duplicate chromosomes.
Telophase
the chromosomes gather at opposite ends of the cell and lose their distinct shapes. Two nuclear envelopes will form.
Anaphase
the sister chromatids separate into individual chromosomes and are moved apart
Prophase
the chromatin condenses into chromosomes. The centrioles separate, and a spindle begins to form. The nuclear envelope breaks down.
Metaphase
the chromosomes line up across the center of the cell. Each chromosome is connected to a spindle fiber at its centromere
spindle
fanlike microtubule structure that helps separate the chromosomes
length x width x 6
Surface Area
length x width x height
Volume