movie notes

• animals can be fossilized if buried under volcanic rock
• fossils are found of animals that have evolved and not have become extinct.
• life has been evolving on earth for 4 billion years.
• the very first forms of life began in the oceans
• mostly in the form of unicellular bacteria
• the method of reproduction causes more diversity between individuals.
• fish soon were able to breathe out of water, this changed into amphibians
• reptiles evolved and ruled the earth, when the dinosaurs died birds and animals became dominant
• man came 2 million years ago
• genetics is a prime tool in figuring out evolution

Journal questions

journal questions

essential question#1 ch 10

During the formation of gametes, the number of chromosomes is reduced by half, and returned to the full amount when the two gametes fuse during fertilization.

Essential Question 3 ch. 9

Protiens regulate the cell cycle by signaling activites in thecelll cycle using cyclin and/or CDKcombinations which include DNA replication, protien sythesis, and nuclear division thought out the cell.

Essential Question 2 ch. 9

Eukaryotic cells reproduce by mitosis and cytokinesis by going through the cell cycle. THey go through interphase which prepares the cell for mytosis. In mitosis the nucleus divides through prophase, metaphase, anaphase, and telophase. After the nucleui are ready to be slipt into separate cells then cytokinesis splits the cell into two separate cells.

Essential Question 1 ch. 9

Cells divide becasue if the cell gets to big then it is harder for cellular communication and to transport substances, and the ratio of surface area to volume. If the cell gets to big it will be harder and less efficent for the cell to get needed nutrients and eventually can die.

essential question 2 ch 8

In photosynthesis you can not have one phase and not the other, you have to have both light and chemical engery. In each phase you make the energy that the other needs and it keeps repeating.