Chapter _________________________ 8.2 ___________________ 8.3 ___________________

Comprehension Check How many characteristics of living things can you remember? Which characteristic is related to this chapter?

All Organisms Need Energy All organisms require energy to live. There are two main ways to obtain this necessary energy: Autotrophs:_________________________________________________ ______________________________________________ Heterotrophs::_______________________________________________ _____________________________________________ AUTOTROPHS HETEROTROPHS

Connection Photosynthesis and Cellular Respiration Metabolism: ___________ _____________________ Photosynthesis –________________________ ________________________ –________________________ ________________________ Cellular Respiration –________________________ ________________________ –________________________ ________________________

Cells use Energy - _______________________________________ ADENOSINE TRIPHOSPHATE ATP ~

Overview of Photosynthesis Definition: __________________ __________________ __________________ Location: __________ CO 2 + H 2 0  C 6 H 12 O

Cells A Student placed a freshwater aquarium containing aquatic plants in a laboratory window and monitored oxygen levels in the water from early morning to noon. They observed a steady rise in dissolved oxygen levels from morning until noon. What is the best explanation for this observation? a.The sunlight increased the temperature resulting in more oxygen exchange between the air and water. b.The plants began photosynthesis resulting in less oxygen use by the plants. c.The plants began photosynthesis resulting in oxygen release from the plants. d.There were fish in the water that released oxygen from their gills.

Pigments in plants Why do leaves appear as different colors? Pigments: ____________________________________ Major Pigment Chlorophyll : ____________ Accessory Pigments Carotenoid: ____________ Xanthophyll: ____________

Chromatography ape/labdocs/catofp/chromato/tlc/video/ movhttp:// ape/labdocs/catofp/chromato/tlc/video/ mov __________________________ R f Values: Distance Pigment Moved (mm) Distance Solvent Moved (mm)

Comprehension Check What types of organisms need energy? What types of organisms can make their own energy? What type of energy do cells (our bodies) use?

Cellular Respiration: DEFINITION: __________________________ _____________________________________ All living organisms go through this process (remember characteristics of life... Require energy!) Location: ___________________ FACT: A working muscle cell converts ADP to ATP at a rate of 10 million molecules per second C 6 H  6CO 2 +6H 2 O +Energy

Cells B A scientist is using transparent (light-penetrating) bottles are opaque (light- blocking) bottle to measure the productivity of algae pond water. Equal amounts of pond water are put in both bottles, which are then capped. They are then placed in the pond at a depth of 0.5 meters at 6:00am. The pond water was collected at 10:00am the same day. Which of the following results is the scientist likely to observe? a.The transparent bottle has a higher concentration of dissolved oxygen than the opaque bottle. b.The transparent bottle has a lower concentration of dissolved oxygen than the opaque bottle. c.The total phosphorus concentration will be greater than the transparent bottle. d.The total phosphorus concentration will be greater in the opaque bottle.

There are 2 Types of Cellular Respiration: 1.Aerobic Respiration –______________________________ 2. Anaerobic Respiration –__________________________ –Creates a byproduct ___________: Yeast, Some Bacteria ___________: Humans

Comprehension Check Take a clothespin from your teacher and squeeze it between your thumb and pointer finger for 60 seconds Describe how your hand feels after 60 seconds. How are the cells in your fingers making energy from sugar right now? What would be happening if you were running around the room while doing this activity?

Comparing Cellular Respiration to Photosynthesis PhotosynthesisCellular Respiration (AEROBIC) Function Produce GlucoseProduce ATP Location ChloroplastsMitochondria Reactants Carbon Dioxide Water Glucose Oxygen Products Glucose Oxygen Carbon Dioxide Water Equation 6CO 2 +6H 2 0  C 6 H 12 O C 6 H  6CO 2 +6H 2 O + ATP