Biology One Review
Published by This is a review of Biological terms and knowledge necessary to succeed in biology.
- Two cell divisions
- Meiosis I and Meiosis II
- No DNA replication
- In metaphase I, Crossing over occurs which is when
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Diploid Cell |
Haploid Cell |
|
- Complete set or pairs of chromosomes - Somatic cells ex humans 46 chromosomes 23 homologous pairs - Result of Mitosis - Genetically Identical |
- Half the number of chromosomes - No pairs - Gametes only ex. Humans 23 unpaired chromosomes in sperm and egg - Haploids make diploids - Result of Meiosis - Genetically different |
MEIOSIS AND MITOSIS DIFFERENCE
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Meiosis |
Mitosis |
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- Cell division for the formation of sex cells (gametes) - New, unique cells (not identical) - ½ the number of chromosomes in each cell |
- Cell division of body (Somatic) cells - Identical cells are produced - Complete number of chromosomes in each cell |
Biology Chapter 7 Test Review
Questions
1) Cell Theory?
- Cells are the basic unit of structure for all living things, which are composed of cells
- All cells are produced from existing cells, cells make cells
2) Distinguish differences between Eukaryotes and Prokaryotes?
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Prokaryotic |
Eukaryotic |
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1) No nucleus 2) No membrane bound organelles 3) Small (compared to Eukaryotic) 4) Less complex 5) Unicellular organism (ex. Bacteria) |
1) Nucleus 2) Membrane bound organelles 3) Large (compared to Prokaryotic) 4) More complex 5) Mostly multicellular organisms |
3) Function of the Nucleus?
- Control center of the cell
- Stores genetic information.
4) Major functions of the cells organelles?
- Structures in cells that have a special function
Liked it
On January 23, 2010 at 9:22 pm
nice dude, this is great
On February 22, 2010 at 11:05 am
Wrong. Ch3#2 Prokaryotes vs Eukaryotes
Wrong. Ch3#7 Hypotonic and Hypertonic switched
This is misleading information and I did not read the rest