Week of 9-15/19

Monday=Continued from last Thursday and Friday but with the addition of one thing. We learned about Energy use and release in biochemical reactions. ATP is the source of energy for cell activities, and cells store and use energy in ATP and ADP molecules.

Tuesday=Today we investigated and analyzed the following bioenergetic reactions: aerobic respiration, anaerobic respiration, and photosynthesis. We also learned the equations to photosynthesis 6CO2+6H2O(Reactants)-->O2+C6H12O6(Products) and cellular respiration 6O2+C6H12O6-->6CO2+6H2O. We also learned about factors that affect the rate of photosynthesis and of cellular respiration. 

Anaerobic respiration includes lactic acid and alcoholic fermentation. We compared anaerobic and aerobic organisms in class.

Finally we compared and contrasted these processes with their regard to efficiency of ATP formation, the types of organisms using these processes, and the organelles involved. 

Wednesday=Continuation from Tuesday

Thursday=Cricket Lab

Today we tested if males or females respire at different rates. My group concluded that the male cricket consumed more oxygen and produced more carbon dioxide in a 90 second session then the female cricket. This may have been affected by the high levels of testosterone in the male crickets.

Friday=Today we compared and contrasted the characteristics of asexual and sexual reproduction.

• We recognized mitosis as a part of asexual reproduction and meiosis as a part of sexual reproduction.
  
• We noted similarities and differences between mitosis and meiosis including: replication and separation of DNA and cellular material, changes in chromosome number, number of cell divisions, and number of cells produced in a complete cycle.
• We also put together mitosis diagrams and described what happened at each phase during the process.
• Finally we learned about the sources of variation which included: crossing over, random assortment of chromosomes, gene mutations, nondisjunction, and fertilization.