Mitosis is the division of the nucleus resulting

� Mitosis is the division of the nucleus, resulting in the formation of 2

Chromatin is uncondensed DNA is in the form of chromatin at all times, except

Chromosomes are condensed DNA. They form X shapes found only during cell division.

� As a cell grows, its ____ becomes too ____ to effectively transport materials

� As a cell grows, its volume becomes too big to effectively transport materials

The Cell Cycle is a series of events that takes place in the cell,

Gap 1, Synthesis, and Gap 2 are collectively called ______.

Gap 1, Synthesis, and Gap 2 are collectively called Interphase.

� During Gap 1, the cell grows. � During Synthesis, the DNA is ____.

� During Gap 1, the cell grows. � During Synthesis, the DNA is copied.

It is one of the longest phases. In this phase: � The _____ and

It is one of the longest phases. In this phase: � The nuclear envelope

centriole Spindle fiber chromosome Nuclear envelope

� In this stage, the chromosomes are moved by the spindle fibers toward the

In this phase, the chromosomes are separated into ________, which get pulled to the

In this phase, the chromosomes are separated into sister chromatids which get pulled to

In this phase, the cell is returning to normal, the opposite of prophase.

After mitosis is completed, the cell completely pinches into two identical cells in the

� The whole process can take from 20 minutes (bacteria) to 24 hours (mammal

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� Mitosis is the division of the nucleus, resulting in the formation of ______.

� Mitosis is the division of the nucleus, resulting in the formation of 2 new cells.

� Mitosis is the division of the nucleus, resulting in the formation of 2 new cells. � The genetic material inside the nucleus is copied and two identical cells are produced.

� Mitosis is the division of the nucleus, resulting in the formation of 2 new cells. � The genetic material inside the nucleus is copied and two identical cells are produced. � The genetic material is _______, which stands for ___________.

CHROMATIN CHROMOSOMES

Chromatin is _______ DNA.

Chromatin is uncondensed DNA is in the form of chromatin at all times, except when the cell undergoes division.

Chromosomes are _______ DNA.

Chromosomes are condensed DNA. They form X shapes found only during cell division.

� As a cell grows, its ____ becomes too ____ to effectively transport materials around the cell.

� As a cell grows, its volume becomes too big to effectively transport materials around the cell.

� As a cell grows, its volume becomes too big to effectively transport materials around the cell. � In order for an organism to _____ it must make more cells.

� As a cell grows, its volume becomes too big to effectively transport materials around the cell. � In order for an organism to grow it must make more cells.

� As a cell grows, its volume becomes too big to effectively transport materials around the cell. � In order for an organism to grow it must make more cells. � New cells must be made as an organism grows to ______ and ____ tissue.

The Cell Cycle is a series of events that takes place in the cell, leading to its _____ and _____.

The Cell Cycle is a series of events that takes place in the cell, leading to its division and duplication.

The Cell Cycle is a series of events that takes place in the cell, leading to its division and duplication. The cell cycle consists of four distinct phases: _______, ____. (G 1) (S) (G 2) (M)

The Cell Cycle is a series of events that takes place in the cell, leading to its division and duplication. The cell cycle consists of four distinct phases: Gap 1, Synthesis, Gap 2, Mitosis. (G 1) (S) (G 2) (M)

Gap 1, Synthesis, and Gap 2 are collectively called ______.

Gap 1, Synthesis, and Gap 2 are collectively called Interphase.

� During Gap 1, the cell ____.

� During Gap 1, the cell grows.

� During Gap 1, the cell grows. � During Synthesis, the DNA is ____.

� During Gap 1, the cell grows. � During Synthesis, the DNA is copied.

� During Gap 1, the cell grows. � During Synthesis, the DNA is copied. � During Gap 2, the cell continues to grow and ____________.

� During Gap 1, the cell grows. � During Synthesis, the DNA is copied. � During Gap 2, the cell continues to grow and prepare for cell division.

� During Gap 1, the cell grows. � During Synthesis, the DNA is copied. � During Gap 2, the cell continues to grow and prepare for cell division. There are protein checkpoints, or ____________, that monitor the process of the cell cycle called _____.

� During Gap 1, the cell grows. � During Synthesis, the DNA is copied. � During Gap 2, the cell continues to grow and prepare for cell division. There are protein checkpoints, or regulatory molecules, that monitor the process of the cell cycle called cyclins.

It is one of the longest phases. In this phase: � The _____ and ____ dissolves.

It is one of the longest phases. In this phase: � The nuclear envelope and nucleolus dissolves.

It is one of the longest phases. In this phase: � The nuclear envelope and nucleolus dissolves. � The DNA (chromatin) starts to _____ into _____.

It is one of the longest phases. In this phase: � The nuclear envelope and nucleolus dissolves. � The DNA (chromatin) starts to condense into chromosomes.

It is one of the longest phases. In this phase: � The nuclear envelope and nucleolus dissolves. � The DNA (chromatin) starts to condense into chromosomes. � _____ replicate and move to opposite sides of the cell (the poles).

It is one of the longest phases. In this phase: � The nuclear envelope and nucleolus dissolves. � The DNA (chromatin) starts to condense into chromosomes. � Centrioles replicate and move to opposite sides of the cell (the poles). � _______ start to form from the centrioles and grow toward the chromosomes, eventually connecting to the chromosome.

It is one of the longest phases. In this phase: � The nuclear envelope and nucleolus dissolves. � The DNA (chromatin) starts to condense into chromosomes. � Centrioles replicate and move to opposite sides of the cell (the poles). � Spindle fibers start to form from the centrioles and grow toward the chromosomes, eventually connecting to the chromosome.

chromosome

centriole chromosome

centriole Spindle fiber chromosome

centriole Spindle fiber chromosome Nuclear envelope

� In this stage, the chromosomes are moved by the spindle fibers toward the middle of the cell, also called the _______.

� In this stage, the chromosomes are moved by the spindle fibers toward the middle of the cell, also called the equator.

In this phase, the chromosomes are separated into ________, which get pulled to the poles.

In this phase, the chromosomes are separated into sister chromatids which get pulled to the poles.

In this phase, the cell is returning to normal, the opposite of prophase.

In this phase, the cell is returning to normal, the opposite of prophase. � The nuclear membrane reforms. � The DNA uncondenses to form chromatin. � The spindle fibers disappear. � The nucleolus reforms. � There are two nuclei in one cell. � The cell membrane begins to pinch in.

After mitosis is completed, the cell completely pinches into two identical cells in the process called cytokinesis. Each cell is now in Gap 1.

� The whole process can take from 20 minutes (bacteria) to 24 hours (mammal cells). � Some cells divide constantly (skin and bone marrow blood), others never reproduce (nervous system). � Cells can divide uncontrollably (cancer).