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14 Cards in this Set
- Front
- Back
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What are the differences between cell division & plant cell?
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Cell division has the cleavage furrow, during Cytokinesis and Plant Cell is the cell wall and doesnt not have centrioles and it also forms a cell plate during Cytokineseis.
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Can you predict the complexity of an organism by the # of chromosomes?
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No, You cannot, The death adders fern has over 1200 chromosomes and a human has 46 and humans are more complex then a fern.
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What happens in Anaphase?
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Chromatids are seperating & pulled towards poles.
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Are the # of chromosomes the same for all organisms?
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No, because some organisms are more simple or complex than others. For example humans have 46 chromosomes and fruit flies have 8.
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Cells spen a majority of their time in what phase of the Cell Cycle?
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Interphase
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What happens in Prophase?
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-chromatin is condensed
-Spindle forms -nucleouls dissapears -nuclear envelop starts to disseapear |
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What happens in Telophase?
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-nucleolus reappears
-nuclear membrane reforms -Spindle disassembles -Cytokinesis occurs |
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What happens in Metaphase?
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Chromosomes line up on the equator w/one chromatid on each side of the equator.
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What are the 3 steps to binary fission?
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1- Duplication of chromosomes and seperation of copies.
2-Continued elongation, and begins to divide 3- Divison into 2 daughter cells, and cell wall is formed |
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What happens in each of the 3 main phases of interphase?
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G1- cell increases in supply of proteins, and increases the # of some organelles, grows in size.
S- DNA synthesis or copies itself G2- proteins are synthesized, and more metabolic activity |
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What are homologous pairs?
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They are identifies by band like things on the chromosomes and they are the same size, shape, and carry genes for the same traits.
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What is the G0 phase?
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The G0 phase is when the cell exits the cell cycle. Metabolic activity continues but the cell does not divide.
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What are the 3 main phases of Interphase?
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-G1
-S -G2 |
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What are the differences between sex chromosomes and autosomes?
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Sex chromosomes determine the sex of a chromosome and have half the # of chromosomes, and 2 in humans. Autosomes are all chromosomes that do not determine sex and have both sets of chromosomes for each possible pair and there are 44 in humans
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