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Table of Contents Photosynthesis Cellular Respiration Cell Division

Cell Processes and Energy. Table of Contents Photosynthesis Cellular Respiration Cell Division. Log: Feb.14th. Read and complete question on page 44 My planet diary. The Sun as an Energy Source.

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Table of Contents Photosynthesis Cellular Respiration Cell Division

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  1. Cell Processes and Energy Table of Contents Photosynthesis Cellular Respiration Cell Division

  2. Log: Feb.14th • Read and complete question on page 44 My • planet diary

  3. The Sun as an Energy Source • Nearly all living things obtain energy from the sun directly or indirectly through the process of photosynthesis. • See page 46

  4. Energy Processes Producers Consumers Heterotrophs All Animals and Fungi • Makes their own food • Autotrophs • All Plants

  5. Photosynthesis; How living organisms get energy from the sun First Stage of Photosynthesis The first stage of photosynthesis powers the “energy engine” of the living world.

  6. Stage 1 Photosynthesis Stage 1 Stage 2 The second stage of photosynthesis makes food for a plant. CO2 enters the plant H and CO2 react Produce C6H12O6 • Chlorophyll acts similar to solar cells and captures light energy • H2O is split • Oxygen is given off as waste • Hydrogen is used in stage 2

  7. Photosynthesis Producing Food The second stage of photosynthesis makes food for a plant. How can the information for Stage 1 and Stage 2 be completed?

  8. Photosynthesis Photosynthesis What is the process of photosynthesis? Write the chemical formula for photosynthesis.

  9. Cellular Respiration = the process by which cells obtain energy from glucose. (glucose = most common sugar in foods) During cellular respiration, cells break down glucose and other molecules from food in the presence of oxygen which allows for energy to be released. Organisms and cells need energy all the time so cellular respiration is continuous. Cellular respirations is not the same as breathing respiration, but these 2 cycles do work together. Cellular Respiration Lesson 2

  10. Cellular Respiration Lesson 2 Getting Energy How does the hiker's energy and breathing rate change as she climbs?

  11. Cellular Respiration Cellular Respiration Complete the concept map about cellular respiration. Write the chemical formula for cellular respiration.

  12. Cellular Respiration Releasing Energy Cellular respiration takes place in two stages. What terms will complete the sentences?

  13. Log: Feb 28th • Summarize the Yeast lab. • What cellular process occurred? • What proved that this process was occurring? • What prevented Oxygen form being present?

  14. Cellular Respiration Opposite Processes Producers carry out photosynthesis, but producers and consumers both carry out cellular respiration. Use the word bank to complete the blank boxes.

  15. Photosynthesis cells take in carbon dioxide and release oxygen. Chloroplast Respiration cells use oxygen to break down glucose and release energy and carbon dioxide Mitochondria Click Connection Between Photosynthesis and Respiration

  16. Section2 Cell Energy Chapter 4

  17. Lactic Acid Fermentation - Muscle cells can break down glucose without oxygen but lactic acid is produced instead of the water & carbon dioxide, a small amount of energy is also released Fermentation = an energy-releasing process that does not require oxygen Alcoholic Fermentation - in yeast or single celled organisms -produces: alcohol, carbon dioxide, and a small amount of energy - Carbon dioxide release makes the bubbles or air holes in bread or bubbles in sparkling or carbonated drinks

  18. Section2 Cell Energy Chapter 4 Getting Energy from Food, • When muscles can’t get the oxygen for cellular respiration, they use fermentation to get energy. • Fermentationis the breakdown of food without the use of oxygen. It produces a small amount of ATP

  19. Cellular Respiration Fermentation A ball of bread dough mixed with yeast is left in a bowl at room temperature. As time passes, the dough increases in size.

  20. Log: March 1st • Write the chemicals equations for photosynthesis and cellular respiration. • How are the two connected? Explain.

  21. Cell Division Lesson 3 Comparing Cell Cycles The table below compares the length of different cell cycles.

  22. Log: March 2, 2011 • True or False • The first stage of cellular respiration occurs in the cytoplasm. • In the first stage of respiration a great deal of energy is required from the sun. • ATP can be made from fermentation or cellular respiration.

  23. Function of the Cell cycle • The cell cycle allows cell to • Grow • Repair • Reproduce • Turn to Page 57 • How does each picture represent cell division

  24. Cell Cycle: What happens? • The cell will grow • Prepare for cell division • Divide into two cell called “daughter cells”

  25. Cell Division Interphase: Preparing to Divide The changes in a cell during interphase prepare the cell for mitosis. The cell is growing and making copies of its DNA Growing What organelles are produced to aid this process? 2. Copying DNA What form is the DNA in? 3. Preparing for division What structures are made?

  26. Cell Division When one cell splits in half during cell division, the result is two new cells. Each of those two cells can divide into two more, and so on.

  27. Log Time • What are the 3 functions of cell division? • Write out the 6 vocab words and define for section 3

  28. Cell Division Mitosis: Prophase Mitosis begins with prophase, which involves further changes to the cell.

  29. Nucleic Acid • Long organic molecules consisting of C,O ,H and N. • They carry instructions for cells • One type of cell Nucleic Acid is DNA • The shape of DNA is referred to as a double helix

  30. Section3 The Cell Cycle Chapter 4 Mitosis and the Cell Cycle • Mitosis has four phases: • prophase • metaphase • anaphase • telophase

  31. Section3 The Cell Cycle Chapter 4 Mitosis and the Cell Cycle, continued • Cytokinesisis the division of cytoplasm. • In animal cells and other eukaryotes that do not have cell walls, division of the cytoplasm begins at the cell membrane. • In plant cells and in other eukaryotes with cell walls, a cell plate forms and the cell splits into two cells.

  32. Cell Division Centriole pairs Spindle fiber Centromere Chromatids The Cell Cycle Cells undergo an orderly sequence of events as they grow and divide. What are the missing parts of the stages?

  33. Each Human cell has 23 pairs of chromosomes Before a cell divides, it must make a copy of its DNA which is organized into structures called chromosomes.

  34. Length of a Liver Cell Cycle Human liver cells generally reproduce less than once per year. At other times, they can complete one cell cycle in about 22 hours. Cell Division

  35. Log: March 2011 • What happens during telophase? • In what process/stage does the cell make a copy of DNA?

  36. Log: March 2011 • What is Mitosis? • What are the two new cells called at the end of the cell cycle?

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