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28 Cards in this Set
- Front
- Back
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Adenine can pair with |
Thymine |
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Guanine pairs with |
Cytosine |
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Nitrogen Bases |
Guanine,Cytosine,Adenine, and Thymine |
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Stage 1 |
Interphase |
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Stage 2 |
MITOSIS
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Stage 3 |
CYTOKINESIS
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What happens in stage 1 |
•The cell grows to its full size.
•Produces structures it needs. •Ex. - cell makes new ribosomes and produces enzymes. • Makes an exact copy of DNA in its nucleus. • DNA is found in the chromatin in thenucleus. • DNA contains all the information the cellneeds. |
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What happens in stage 2 |
• Nucleus divides into two nuclei.
•One copy of DNA is distributed to each of the twodaughter cells. • Divided into 4 phases: •Prophase • Metaphase • Anaphase •Telophase |
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What happens in stage 3 |
• Cytoplasm divides and organelles are divided.•In animal cells, cell membrane pinches in themiddle of the cell to form two new cells.
•In plant cells, cell plate forms in the middle of thecell. Plate forms new cell membranes and cellwall forms around membranes. |
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Mitosis stages |
Prophase,Metaphase,Anaphase, and Telophase |
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Mistosis:Prophase |
• Chromatin condenses to form chromosomes.
• Centrioles move to opposite ends of the cell.•Spindle fibers form bridge. • Nuclear envelope breaks down. |
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Mistosis:Metaphase |
• Chromosomes line up across the center of the cell.
• Chromosomes attach to the spindle fibers. |
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Mistosis:Anaphase |
•The two chromatids split and move to opposite endsof the cell.
• Cell stretches out as ends are pushed out. |
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Mistosis:Telophase |
• Chromosomes stretch out and lose rodlikeappearance.
• New nuclear envelope forms. |
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A DNA strand looks like a....
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Twisted ladder |
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Put the events of replication in order.
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1. The DNA strand unwinds. 2. The DNA strand unzips. 3. The nitrogen bases floating in the nucleus attach to their pair. 4.The DNA becomes two exact strands |
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A rung of a DNA strand is made up of....
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A pair of Nitrogen Bases |
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In this phase the nuclear envelope breaks down.
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Prophase |
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In this phase the chromosomes stretch out and the nuclear envelope forms around the nuclear region.
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Telophase |
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In this phase the centromere splits and the chromatids move to opposite ends of the cell.
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Anaphase |
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In this phase the chromatin condenses to form rod like structures called chromosomes.
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Prophase |
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In this phase the chromosomes line up in the center of the cell and attach to spindle fibers.
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Metaphase |
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DNA Replication |
the process by which a cell makes an exact copy of its DNA.
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What are chromatids?
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Identical strands of chromosomes |
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What forms around the chromatids during mitosis?
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Two new nuclei |
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What is copied during replication?
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the cells DNA |
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During what stage of the cell cycle does replication occur?
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Interphase |
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A cell makes a copy of its DNA during the stage of the cell cycle called mitosis.
True or false ? |
False |
