makayla+amerys+page

= :D = what is an organism?? an organism is a living form. It is something that can reproduce and make more life. how did early civilizations explain bilogical diversity???? People thought the sun rotated around the earth, they also thought that if they kept walking they would eventually fall off the edge of the earth (they thought the earth was flat). People thought everything done was because of the gods or god. Some people said it was them and everyone would belive them. Early philosophers believed that the huge variety of different organisms that exist on earth were created by a supreme (god) and that they were IMMUTABLE.

CLASSIFICATION OF LIFE 5 kingdoms activity-

Makaylas Glossary

__//** MEIOSIS VS MITOSIS **//__ Every day, our skin cells and other somatic (body) cells undergo division to replenish the dying cells. When this happens, the new cell will have the same amount of chromosomes and organelles. This process is called mitosis.



The four phases: > > In this process, there are seven stages: >
 * Prophase - doubling of chromosomes and organelles and centrioles visible
 * Metaphase - chromosomes line-up in the middle and spindles from centrioles connect to each chromatid (half of chromosome)
 * Anaphase - chromatids are pulled apart to separate ends, and the membrane begins to pinch off in the middle
 * Telophase - complete division of cytoplasm, and two cells are formedThis process occurs in all diploid (2n) cells, except for the sex cells, which will produce gametes for reproductive purposes. The process for the production of gametes is called meiosis.
 * Prophase I - doubling of homologous chromosomes (identical chromosomes - 2 pairs of each sister chromatids)
 * Metaphase I - lining of homologous chromosomes in the middle
 * Anaphase I - separation of homologous chromosomes to form two cells with 2n of the chromosomes
 * Telophase I - two cells - 2n of chromosome number
 * Metaphase II - lining up of chromosomes in the middle
 * Anaphase II - separation of chromosomes into chromatids (2n to 1n)
 * Telophase II - four new 1n cellsIn the male, all four of the 1n (haploid) cells will become sperm. However, in the female, only one cell will become an egg and the rest will be polar bodies.

[|meoisis vs mitosis animation]

Where in the body do they occur?? Mitosis occurs in micoorganisms. In order to reproduce, they undergo mitosis. Mitosis also occurs in cells of different tissues of different organs. The organs in your body are grown by cells that reproduced and multiplied by mitosis. Meiosis occurs in organisms that reproduce asexually. What does each process involve?? What is the material involved in both processes?? What happens to the chromosomes in each process??