1 / 10

The Energy Converters: Chloroplasts and Mitochondria in Cellular Respiration and Photosynthesis

Chloroplasts and mitochondria are essential organelles in eukaryotic cells that convert energy into usable forms. Chloroplasts transform sunlight into ATP and carbohydrates through photosynthesis, while mitochondria generate ATP from the breakdown of glucose and other fuels via cellular respiration. Both organelles possess double membranes, internal ribosomes, DNA, and enzymes for energy transformation. Their structures maximize surface area for ATP synthesis, demonstrating their critical roles in energy production and metabolic activity within cells.

marlon
Télécharger la présentation

The Energy Converters: Chloroplasts and Mitochondria in Cellular Respiration and Photosynthesis

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Warm-Up 11/16/12 • Within the thylakoid membrane, chemiosmosis takes place converting _______energy into ______energy. • Within the thylakoid membrane, chemiosmosis takes place converting lightenergy into chemicalenergy.

  2. The Cell: Chloroplasts & Mitochondria Mrs. Ferenc Biology

  3. ATP ATP + Overview • Mitochondria & chloroplasts are the organelles that convert energy to useable forms for the cell • chloroplasts: from sunlight to ATP & carbohydrates • ATP = active energy • carbohydrates = stored energy (think “carb loading) • Mitochondira: from glucoseto ATP

  4. Mitochondria & Chloroplasts • Important to see the similarities • transform energy • generate ATP • double membranes = 2 membranes • internal ribosomes, DNA & enzymes

  5. Chloroplasts Why internal sac membranes? increase surface area for membrane-bound enzymes that synthesize ATP • Type of plastid • Structure • 2 membranes • outer membrane • inner membrane • internal fluid-filled space = stroma • DNA, ribosomes & enzymes • thylakoids = membranous sacs where ATP is made • grana = stacks of thylakoids

  6. Chloroplasts • Function • photosynthesis • generate ATP & synthesize sugars • transform solar energy into chemical energy • produce sugars from CO2 & H2O

  7. Mitochondria • Almost all eukaryotic cells have mitochondria • there may be 1 very large mitochondrion or 100s to 1000s of individual mitochondria • number of mitochondria is correlated with aerobic metabolic activity • more activity = more energy needed = more mitochondria

  8. Mitochondria Why 2 membranes? increase surface area for membrane-bound enzymes that synthesize ATP • Structure • 2 membranes • Cristae • Folds to increase surface area, allows more energy to be obtained within cell • Fluid space between 2 membranes • internal fluid-filled space • mitochondrial matrix • DNA, ribosomes & enzymes

  9. Mitochondria • Function • cellular respiration • generate ATP • from breakdown of sugars, fats & other fuels • in the presence of oxygen • break down larger molecules into smaller to generate energy • generate energy in presence of O2 = aerobic respiration

  10. Any Questions??Today’s Assignment: Chloroplast & Mitochondria Packet

More Related