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23 Cards in this Set
- Front
- Back
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What are the steps of cell division?
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Prophase, Metaphase, Anaphase, Telophase
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What occurs in prophase?
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Mitosis begins nuclear membrane disappears
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What occurs in metaphase?
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Chromosomes line up along the equator of the cell
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What occurs in anaphase?
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Chromatics split and are pulled to each pale of the cell
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What occurs in telephase?
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Nuclear membrane reforms cells begin to pinch together
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In which step of the cell cycle does mitosis begin?
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Interphase
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In which step of the cell cycle does mitosis end?
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Cytokinesis
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What are chromosomes?
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The physical structure in a cell that contains the cell's genetic material
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What is a chromatin?
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Coils of DNA that form chromosomes
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What is a chromatid?
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One of the two strands that make up chromosomes
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Why is cell division important?
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-Growth
-Development -Repair -Reproduction |
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What is the longest phase in the cell cycle?
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Interphase
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How many daughter cells are produced during mitosis?
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2
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How many chromosomes are in a normal cell?
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23
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What does DNA stand for?
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Deoxyribonucleic acid
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Four different nitrogen bases
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Adenine thymine guanine cytosine
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Pairs of nitrogen bases
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adenine - thymine
guanine - cytosine |
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What is on the outside of the DNA molecule?
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Sugar and phosphate
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What is on the inside of the DNA molecule?
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Nitrogen base pairs
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What is another name for a DNA molecule that relates to its structure?
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Double helix
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What does DNA carry that's passed from parent cell to the daughter cell?
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genetic instructions
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What is a nucleotide made of?
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base + sugar + phosphate
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Steps in DNA replication
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1. Molecules unwinding and separating
2. They separate between nitrogen pairs (on the rungs) 3.Free floating nitrogen bases pair up with bases on each half of the DNA molecule |
