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20 Cards in this Set
- Front
- Back
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The first stage, the division of the cell nucleus, is called ___.
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mitosis
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The second stage, division of the cytoplasm, is called ___.
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cytokinesis
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Reproduction by mitosis is considered _________ reproduction.
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asexual
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The genetic information that is passed on from one generation to the next is carried by ____.
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chromosomes
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DNA carries ________ and ________.
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genetic information
protein |
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When is DNA visible in a cell?
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during cell division
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Human cells have ___ chromosomes.
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46
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______ are the identical sister chromosomes.
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Chromatids
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Chromatids are attached at an area called the ________.
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centromere
centro-mere |
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Each chromosome has how many chromatids?
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2
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The __ _____ is the series of events that cells go through as they grow and divide.
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cell cycle
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The _____ is the in-between period of cell growth and cell division.
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interphase
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What happens during the cell cycle?
1 2 3 4 |
1. cell growth - G1
2. chromosomes replicate -S 3. prepare for mitosis- G2 4. mitosis/cytokinesis - M |
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Interphase is divided into 3 phases:
1 2 3 |
1. G1
2. S 3. G2 |
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The four phasis of mitosis:
1 2 3 4 |
1. prophase- 50%-60% of total time - chromosome activity
2. metaphase -chromosomes line up 3. anaphase-chromatids separate 4. telophase - two new nucleus appear |
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____________ are two tiny structures that help organize the spindles.
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centrioles
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_____ is a fanlike microtubule structure that helps separate the chromosomes.
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spindle
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_______ occurs the same time as telophase.
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Cytokinesis
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In _____, the cytoplasm pinches off into two equal parts.
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Cytokinesis
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How is cytokinesis different in plants?
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A cell plate will form midway between the nuclei and eventually form into a cell wall.
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