all living things need or use energy. all organisms need or use energy in order to survive, it is...
TRANSCRIPT
Photosynthesis
All living things need or use energy.All organisms need or use energy in order to
survive, it is one of the six characteristics of all living things.
Animals get their energy from _________?plants and other animals
Plants get their energy from _________?the sun
Two different types of organismsAutotrophs/producers- are organisms that
can make their own food. What are two examples of organisms that can make their own food?
Heterotrophs/consumers- are organisms that can NOT make their own food. Heterotrophs get their ENERGY by consuming (eating) other organisms. What are two examples of a heterotroph?
Autotroph = ProducerPlants are autotrophs - they make their own
food with the help of the sun. They do this through a process known as PHOTOSYNTHESIS.
Algae and some bacteria are also autotrophs.Photosynthesis is the process by which a
plant cell captures the sun’s energy and converts it to chemical energy.
Stages of PhotosynthesisThere are two stages of photosynthesis, they
are:Stage one- capturing the sun’s energy in
chlorplastsStage two- converting that energy into
chemical (usable) energy
Stage one: capturing energyChloroplasts in plant cells capture energy from sunlight.
ChloroplastsChloroplasts are in the cytoplasm of plant
cells. They are flat, Frisbee-shaped structures filled with thylakoids.
Thylakoids are small disk-like compartments made of membranes that are the site of photosynthesis.
Photosynthesis
ChloroplastsThe thylakoids are surrounded by the
stroma.Stroma are the inner liquid portion of
the chloroplast. Thylakoids are often stacked on top of
each other - they look like a stack of flapjacks.
Source: http://education-portal.com/academy/lesson/chloroplast-structure-chlorophyll-stroma-thylakoid-and-grana.html#lesson
Stage two: Converting energy into chemical (usable) energy The captured light energy is used to produce sugars and oxygen from the water and carbon dioxide a plant takes in.
Cross section of a leaf
Where do the RAW materials come from?Water is absorbed through the roots and
stems of the plant.Carbon dioxide comes into the plant
through tiny little openings called the stomata.
Stomata Video
Stomata Video
Photosynthesis Equation6 CO2 + 6 H2O C₆H₁₂O₆ + 6 O2
energy from sunCarbon dioxide + water sugar (fuel)
+ oxygen
Raw Materials/Reactants (what is needed): Carbon Dioxide (CO2) and Water (H2O)
Products (what is created/produced): Sugar (C₆H₁₂O₆) and Oxygen (O2)
Another name for sugar is glucose.
Photosynthesis Raw Materials/ReactantsWhat are the raw materials?
Carbon dioxide and waterWhere does the CO2 come from?
Animals exhale then goes through stomata
Where does the water come from?Absorbed through plants roots
Photosynthesis ProductsWhat are the products?
Oxygen and glucose (sugar)Where does the oxygen go?
Air for animalsWhere does the glucose (sugar) go?
Food source for plants and animals
