Biology - Chapter 7
Terms
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- Louis Pasteur
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1864; 1> boiled the infusion,
2> created a S-shaped flask to trap the micro organisms
3> proved that spontaneous generation was false - Francisco Redi
- 1668; tested the belief that maggots "appeared" on decaying meat; wanted to disprove spontaneous generation
- biogenesis
- living things are produced from other living things
- surface area to volume ratio
- cells need to fit through veins in the human body... thats y they are small
- interphase
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non-reproducing stage where the cell spends most of its time; this stage begins when cell reproduction is over
chromatin> strands of DNA found in the nucleus ((spools of thread)) - mitosis
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-2 identical sets of chromosomes distributed to daughter cells
-cell cycle is interphase & mitosis
PMAT
> prophase
> metaphase
> anaphase
> telophase - binary fission
- process where prokaryotes replicate their DNA & distributes 2 copies to daughter cells
- homologous/homologues
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> homologous: similar in structure, in function, or both; the more homologous structures shared by different kinds of organisms, the closer their relationship
> homologues: in diploid cells, the two members of each pair of chromosomes that carry DNA with information for corresponding traits - diploid/haploid
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> diploid: cells haveing 2 of each chromosome
> haploid: cells havingonly one chromosome from each homologous - sexual reproduction
- reproduction involving production and fusion of egg and sperm to form a diploid zygote, which will develop into a mature multicellular adult
- genetic recombination
- the formation of new gene combinations during meiosis and sexual reproduction