Mitosis/DNA replication Q&A

Created by: alicia6939
Created on: 26-05-14 19:09

Describe what happens during metaphase (2)

Spindle formed / chromosome/centromere/chromatids attaches to spindle; Chromosomes/chromatids line up/move to middle/equator (of cell);

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Describe what happens during anaphase (2)

Chromosome/centromere splits / chromatids/ ‘chromosomes’ separate/pulled apart; To (opposite) sides/poles/centrioles (of cell);

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Cells lining the human intestine complete the cell cycle in a short time. Explain the advantage of these cells completing the cell cycle in a short time. (1)

Form/replace cells quickly/rapidly / divide/multiply/replicate rapidly;

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Mikanolide is a drug that inhibits the enzyme DNA polymerase. Explain why this drug may be effective against some types of cancer (2)

Mikanolide is a drug that inhibits the enzyme DNA polymerase. Explain why this drug may be effective against some types of cancer

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Mitosis is important in the life of an organism. Give two reasons why.(2)

1. Growth / increase in cell number; 2. Replace cells / repair tissue / organs /body; 3. Genetically identical cells; 4. Asexual reproduction /cloning

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Describe how DNA is replicated. (6)

Strands separate / H-bonds break; 2. DNA helicase (involved); 3. Both strands/each strand act(s) as (a) template(s); 4. (Free) nucleotides attach; 5. Complementary/specific base pairing / AT and GC; 6. DNA polymerase joins nucleotides (on new

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Describe the role of the centromere in mitosis (2)

1. Holds chromatids together; 2. Attaches (chromatids) to spindle; 3. (Allows) chromatids to be separated/move to (opposite) poles / (centromere) divides/splits at metaphase/ anaphase;

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DNA helicase is important in DNA replication. Explain why (2)

Separates/unwinds/unzips strands/helix / breaks H-bonds; 2. (So) nucleotides can attach/are attracted / strands can act as templates;

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Other cards in this set

Card 2

Front

Describe what happens during anaphase (2)

Back

Chromosome/centromere splits / chromatids/ ‘chromosomes’ separate/pulled apart; To (opposite) sides/poles/centrioles (of cell);

Card 3

Front

Cells lining the human intestine complete the cell cycle in a short time. Explain the advantage of these cells completing the cell cycle in a short time. (1)

Back

Card 4

Front

Mikanolide is a drug that inhibits the enzyme DNA polymerase. Explain why this drug may be effective against some types of cancer (2)

Back

Card 5

Front

Mitosis is important in the life of an organism. Give two reasons why.(2)

Back

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Mitosis/DNA replication Q&A