Concept 4 Study Guide
Write and interpret the chemical formula for photosynthesis. Label the reactants and products.
The chemical formula for photosynthesis is 6CO2 + 6H2O → C6H12O6 + 6O2. The reactants for photosynthesis are light energy, water, carbon dioxide and chlorophyll (CO2 + H2O), while the products are glucose (sugar), oxygen and water (C6 H12 O6 + glucose +O2).
Stroma
The Stroma is a fluid-like substance that fills the space between the grana.
ATP and NADPH
High energy products made by the light reactions and used in the Calvin cycle.
Chemosyntehsis is what?
Chemosynthesis is a process of an organism making its own food using chemicals instead of sunlight like in photosynthesis.
What type of reaction is photosynthesis?
Photosynthesis is an endothermic reaction.
Chlorophyll
A green pigment that captures light energy for photosynthesis.
Explain where all energy on Earth comes from and the overall processes it goes through to be in a usable form of ATP for consumers like us.
All of the energy on Earth comes from sunlight. All organisms on Earth needs this energy to survive. The process it has to go through to be in a usable form of ATP for consumers like us is Photosynthesis. The overall process is by which sunlight chemically converts water and carbon dioxide into chemical energy that in then stored as glucose.
Chloroplast
An organelle found in plant and algae cells where photosynthesis occurs. Chloroplast conducts photosynthesis.
Photosynthesis
Photosynthesis is a process used by plants and other organisms to convert light energy, normally from the Sun, into chemical energy that can be later released to fuel the organisms' activities. Photosynthesis can be represented through this equation: 6CO2 + 6H2O → C6H12O6 + 6O2.
Grana
The Grana is pancake-like stacks of the thylakoid membrane.
Describe the significant events of the light-dependent reaction (ETC.) Include which reactants and products are involved. Highlight what will be released as a product and what will move on to the second stage. Be sure to include where the process occurs in the chloroplast.
The purpose is to capture energy from the sun and store energy in "energy-carrying molecules" (ATP and NADPH). It occurs in the grana (specifically the thylakoid membrane) where the chlorophyll is stored. Energy from sun is passed down the electron transport chain and is stored in the bonds of ATP and NADPH. Water molecules are then split into hydrogen and oxygen. Lastly, Oxygen is released as a waste product.ATP, NADPH, and Hydrogen (H+) leave the grana and go into the stroma for the next stage.
Describe the significant events of the light-independent reaction (Calvin Cycle.) Include which reactants and products are involved. Highlight what will be released as a product and what will move on to continue in the cycle. Be sure to include where the process occurs in the chloroplast.
The purpose is to use the energy from the "energy-carrying molecules" from the light-dependent reaction to make sugar (glucose). It occurs in the stroma and is also known as the Calvin cycle. The chemical reactions powered by ATP and NADPH combine H+ (from water) with CO2 to form sugar molecules (glucose = C6H12O6). It then uses CO2 (and H+ from water) and makes glucose.