Biology Chapter 10

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34 terms

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

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